{"title":"SMS Precision — Chevrolet Silverado \u0026 GMC Sierra Fitment","description":"\u003ch2\u003eSilverado or Sierra Upgrade? Get the Mounting and Underseat Space Right First.\u003c\/h2\u003e\u003cp\u003eThese SMS Precision parts cover supported Chevrolet Silverado and GMC Sierra speaker, tweeter, and Crew Cab under-seat bass applications. They are built around the factory locations instead of asking a universal part to do the job.\u003c\/p\u003e\u003cp\u003eMatch the part to the truck year, model, cab, factory audio system, speaker location, and exact aftermarket driver. The 2014–2021 front 8-inch door-adapter application requires trimming, and enclosure fitment follows the specific seat-lift and subwoofer-clearance rules shown on the product page.\u003c\/p\u003e","products":[{"product_id":"sms-precision-chevy-underseat-subwoofer-enclosure","title":"SMS Precision 2007–2026 Chevy\/GMC Silverado \u0026 Sierra Crew Cab Underseat Subwoofer Enclosure","description":"\u003ch2\u003eSMS Precision Chevy\/GMC Underseat Subwoofer Enclosure — Silverado \/ Sierra Crew Cab 2007–2026\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eSale unit:\u003c\/strong\u003e One custom underseat enclosure. Subwoofers, amplifier, seat-lift hardware where required, wiring, and installation are not included unless specifically stated.\u003c\/p\u003e\u003cp\u003eWant real bass under the rear seat without turning the whole cab into a subwoofer box? The enclosure has to be built around the truck, the available seat clearance, the exact subwoofer, and the system you are actually trying to run. This SMS Precision enclosure is built to order for compatible 2007–2026 Chevrolet Silverado and GMC Sierra Crew Cab trucks instead of starting with a generic box and making the truck adapt to it.\u003c\/p\u003e\u003cp\u003eThe guided builder controls the vehicle fitment group, subwoofer layout, finish, exact driver, paid fabrication upgrades, and final fitment review.\u003c\/p\u003e\u003ch2\u003eChoose the Correct Truck Fitment First\u003c\/h2\u003e\u003ch3\u003e2007–2013 Silverado \/ Sierra Crew Cab\u003c\/h3\u003e\u003cp\u003eSelect the 2007–2013 enclosure group for compatible trucks in that year range. The same six subwoofer layouts and four finish choices are available, but the enclosure is built around this truck generation rather than the later 2014–2026 platform.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSeat lift:\u003c\/strong\u003e a lift is required on these applications and must be acknowledged in the builder before purchase.\u003c\/p\u003e\u003ch3\u003e2014–2026 Silverado \/ Sierra Crew Cab\u003c\/h3\u003e\u003cp\u003eSelect the 2014–2026 enclosure group for compatible trucks in this range. The seat-lift requirement changes inside that span:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2014–2018:\u003c\/strong\u003e a seat lift is required and must be acknowledged before purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2019–2026:\u003c\/strong\u003e this enclosure configuration does not require the seat lift, so the builder does not show a lift option or acknowledgement.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThat year distinction matters. Do not choose the enclosure only from a photo or because two trucks are both called Silverado or Sierra.\u003c\/p\u003e\u003ch2\u003eChoose the Subwoofer Layout Around the System\u003c\/h2\u003e\u003cp\u003eThe six layouts are different system architectures, not a simple good\/better\/best ladder. Driver count, cone area, voice-coil configuration, final impedance, amplifier power, electrical capacity, mounting depth, and the exact subwoofer model all affect which layout makes sense.\u003c\/p\u003e\u003ch3\u003e2 × 6.5-Inch Subwoofers\u003c\/h3\u003e\u003cp\u003eChoose the dual-6.5 layout when the build is specifically centered around a pair of compatible 6.5-inch subs. It keeps the driver count, wiring, and replacement cost simpler than the four- or six-driver 6.5-inch layouts while still using the available underseat space for a purpose-built bass section.\u003c\/p\u003e\u003cp\u003eFinal output depends on the actual subwoofers, amplifier, enclosure requirements, and tuning—not just the number printed on the layout selector.\u003c\/p\u003e\u003ch3\u003e4 × 6.5-Inch Subwoofers\u003c\/h3\u003e\u003cp\u003eChoose four 6.5s when the system is designed around more total 6.5-inch cone area and the amplifier\/voice-coil combination supports four drivers at the correct final impedance. Adding two more subs changes wiring, power distribution, total load, and system cost; it is not simply the dual-6.5 box with extra holes.\u003c\/p\u003e\u003ch3\u003e6 × 6.5-Inch Subwoofers\u003c\/h3\u003e\u003cp\u003eThis is the highest driver-count layout in the builder. Pick it when six compatible 6.5-inch subs are part of the planned system and the amplifier, electrical system, wiring, and impedance strategy are being designed around all six drivers.\u003c\/p\u003e\u003cp\u003eSix smaller subs can be the right architecture for a specific build, but it is not automatically a better choice than fewer larger drivers.\u003c\/p\u003e\u003ch3\u003e2 × 8-Inch Subwoofers\u003c\/h3\u003e\u003cp\u003eChoose this layout when the system is built around a pair of compatible 8-inch subs. It is the simpler 8-inch route when you want two drivers rather than the additional wiring, amplifier-load planning, and total cone area of the four-8 layout.\u003c\/p\u003e\u003ch3\u003e4 × 8-Inch Subwoofers\u003c\/h3\u003e\u003cp\u003eThis is the four-driver 8-inch architecture. Choose it when the selected subs, amplifier, final impedance, electrical system, and underseat enclosure are all being planned together. Compared with two 8s, the additional drivers change cone area, wiring options, power distribution, and total system cost.\u003c\/p\u003e\u003ch3\u003e2 × 10-Inch Subwoofers\u003c\/h3\u003e\u003cp\u003eChoose dual 10s when the system is built around a pair of compatible 10-inch subs and those exact drivers physically work in the available underseat space. This is where mounting depth becomes especially important.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e10-inch driver clearance:\u003c\/strong\u003e mounting depth is required in the builder. Drivers over \u003cstrong\u003e6.5 inches mounting depth\u003c\/strong\u003e are flagged for deep-driver review and require acknowledgement because the basket, motor, seat structure, and usable enclosure space can affect final clearance.\u003c\/p\u003e\u003ch2\u003eChoose the Finish for the Way the Enclosure Will Be Used\u003c\/h2\u003e\u003ch3\u003eBare Wood\u003c\/h3\u003e\u003cp\u003eChoose Bare Wood when you want the fabricated enclosure without a cosmetic finish. It is the practical route if the enclosure will be finished later, incorporated into additional fabrication, or appearance is not the priority.\u003c\/p\u003e\u003ch3\u003eCarpeted\u003c\/h3\u003e\u003cp\u003eChoose Carpeted for a conventional finished enclosure surface without moving into the more involved coated or upholstered-face options.\u003c\/p\u003e\u003ch3\u003eBed Lined\u003c\/h3\u003e\u003cp\u003eChoose Bed Lined when you want the tougher coated finish offered in this builder. It makes sense when durability and an easy-to-live-with utility-style surface matter more than an upholstered appearance.\u003c\/p\u003e\u003ch3\u003eVinyl Face\u003c\/h3\u003e\u003cp\u003eChoose Vinyl Face when the visible presentation of the enclosure matters and you want the upgraded face treatment rather than bare wood, carpet, or bed liner.\u003c\/p\u003e\u003cp\u003eYour selected truck group, layout, and finish determine the enclosure price.\u003c\/p\u003e\u003ch2\u003eBuilt Around the Exact Subwoofer\u003c\/h2\u003e\u003cp\u003eTwo subwoofers with the same nominal diameter can use completely different cutouts, frame diameters, baskets, motors, terminals, and mounting depths. That is why the builder does not stop at “8-inch” or “10-inch.”\u003c\/p\u003e\u003cp\u003eAfter the layout is chosen, select the exact subwoofer model. Listed models use their cutout and outside-frame dimensions for the fitment review. If the model is not listed or its dimensions are incomplete, enter the manufacturer cutout, frame diameter, and mounting depth through the Custom Fit path.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo not assume a subwoofer fits because another model of the same nominal size fits.\u003c\/strong\u003e The exact driver, truck configuration and available clearance must match before fabrication.\u003c\/p\u003e\u003ch2\u003ePaid Upgrades \u0026amp; Final Review\u003c\/h2\u003e\u003cp\u003eAvailable fabrication upgrades show their actual add-on prices in the builder and are added as separate cart items when selected. The final review shows the enclosure price and any selected upgrades before checkout.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSubwoofers, amplifier, seat-lift hardware where required, and installation are not included unless specifically stated.\u003c\/strong\u003e\u003c\/p\u003e","brand":"SMS Precision","offers":[{"title":"2007–2013 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Bare Wood \/ 2 x 6.5-Inch Subwoofers","offer_id":51271683277033,"sku":"SMS-CHEVY-UNDERSEAT-0713-BARE-2X65","price":400.0,"currency_code":"USD","in_stock":true},{"title":"2007–2013 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Carpeted \/ 2 x 6.5-Inch Subwoofers","offer_id":51271683473641,"sku":"SMS-CHEVY-UNDERSEAT-0713-CARPET-2X65","price":550.0,"currency_code":"USD","in_stock":true},{"title":"2007–2013 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Bed Lined \/ 2 x 6.5-Inch 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Subwoofers","offer_id":51271683735785,"sku":"SMS-CHEVY-UNDERSEAT-0713-BEDLINER-6X65","price":650.0,"currency_code":"USD","in_stock":true},{"title":"2007–2013 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Vinyl Face \/ 6 x 6.5-Inch Subwoofers","offer_id":51271683932393,"sku":"SMS-CHEVY-UNDERSEAT-0713-VINYL-6X65","price":750.0,"currency_code":"USD","in_stock":true},{"title":"2014–2026 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Bare Wood \/ 2 x 6.5-Inch Subwoofers","offer_id":51271684063465,"sku":"SMS-CHEVY-UNDERSEAT-1426-BARE-2X65","price":400.0,"currency_code":"USD","in_stock":true},{"title":"2014–2026 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Carpeted \/ 2 x 6.5-Inch Subwoofers","offer_id":51271684260073,"sku":"SMS-CHEVY-UNDERSEAT-1426-CARPET-2X65","price":550.0,"currency_code":"USD","in_stock":true},{"title":"2014–2026 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Bed Lined \/ 2 x 6.5-Inch 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Subwoofers","offer_id":51271684358377,"sku":"SMS-CHEVY-UNDERSEAT-1426-BEDLINER-4X8","price":650.0,"currency_code":"USD","in_stock":true},{"title":"2014–2026 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Vinyl Face \/ 4 x 8-Inch Subwoofers","offer_id":51271684554985,"sku":"SMS-CHEVY-UNDERSEAT-1426-VINYL-4X8","price":750.0,"currency_code":"USD","in_stock":true},{"title":"2014–2026 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Bare Wood \/ 6 x 6.5-Inch Subwoofers","offer_id":51271684129001,"sku":"SMS-CHEVY-UNDERSEAT-1426-BARE-6X65","price":400.0,"currency_code":"USD","in_stock":true},{"title":"2014–2026 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Carpeted \/ 6 x 6.5-Inch Subwoofers","offer_id":51271684325609,"sku":"SMS-CHEVY-UNDERSEAT-1426-CARPET-6X65","price":550.0,"currency_code":"USD","in_stock":true},{"title":"2014–2026 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Bed Lined \/ 6 x 6.5-Inch Subwoofers","offer_id":51271684522217,"sku":"SMS-CHEVY-UNDERSEAT-1426-BEDLINER-6X65","price":650.0,"currency_code":"USD","in_stock":true},{"title":"2014–2026 Chevrolet Silverado \/ GMC Sierra Crew Cab \/ Vinyl Face \/ 6 x 6.5-Inch Subwoofers","offer_id":51271684718825,"sku":"SMS-CHEVY-UNDERSEAT-1426-VINYL-6X65","price":750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0311\/8134\/0811\/files\/sms-2022-gmc-denali-four-8-underseat-enclosure_9dce461d-12cc-4c08-b4ac-8669a6bda567.jpg?v=1787071415"},{"product_id":"sms-precision-2014-2026-chevrolet-silverado-gmc-sierra-speaker-adapter-rings","title":"SMS Precision 2007–2026 Chevy\/GMC Silverado \u0026 Sierra Door Speaker Adapters","description":"\u003ch2\u003eSMS Precision Chevy\/GMC Door Speaker Adapters — Silverado \/ Sierra 2007–2026\u003c\/h2\u003e\u003cp\u003eThe factory opening is only the starting point. The aftermarket speaker still has to match the adapter, clear the window and door structure, and fit back behind the factory panel. This consolidated SMS Precision family covers supported 2007–2026 Chevrolet Silverado and GMC Sierra applications, but the available architecture changes by truck generation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChoose the year range first.\u003c\/strong\u003e The 2007–2013 option is a complete four-ring 6.5-inch package. The 2014–2026 platform gives you separate front, rear, and complete-set choices with 6.5-, 6x9-, and 8-inch front options.\u003c\/p\u003e\u003ch3\u003e2007–2013 — Complete Set — Front 6.5 + Rear 6.5\u003c\/h3\u003e\u003cp\u003eThis is the 2007–2013 package on this product. Choose it when a compatible Crew Cab is being upgraded with 6.5-inch speakers front and rear. The configurator can use a different supported speaker brand\/model for the front pair and rear pair, but the adapter package itself is a four-ring 6.5-inch set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e two front 6.5-inch adapter rings and two rear 6.5-inch adapter rings.\u003c\/p\u003e\u003ch3\u003e2014–2026 — Front Doors — 8-Inch Speaker Pair\u003c\/h3\u003e\u003cp\u003eChoose this pair when the front stage is being designed around a compatible 8-inch driver and the truck\/speaker combination has the additional space that larger basket requires.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eImportant for 2014–2021 trucks:\u003c\/strong\u003e the inner front-door metal must be trimmed for the 8-inch adapter bracket and selected speaker to fit. This is not a no-trim installation. Final clearance still depends on the speaker basket, magnet, terminals, and mounting depth.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e two front-door 8-inch adapter rings.\u003c\/p\u003e\u003ch3\u003e2014–2026 — Front Doors — 6.5-Inch Speaker Pair\u003c\/h3\u003e\u003cp\u003eThis is the front-only conversion when the system uses compatible 6.5-inch speakers. Choose it when the rear doors are staying factory, already have their own mounting solution, or are being upgraded separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e two front-door 6.5-inch adapter rings.\u003c\/p\u003e\u003ch3\u003e2014–2026 — Front Doors — 6x9-Inch Speaker Pair\u003c\/h3\u003e\u003cp\u003eChoose this version when the new front speakers are compatible aftermarket 6x9s and you want to keep the front stage in the factory-style nominal speaker format. The actual basket and frame still need to match the adapter—6x9 is not one universal mounting pattern.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e two front-door 6x9-inch adapter rings.\u003c\/p\u003e\u003ch3\u003e2014–2026 — Rear Doors — 6.5-Inch Speaker Pair\u003c\/h3\u003e\u003cp\u003eThis is the rear-only choice for trucks equipped with compatible rear-door speaker locations using 6.5-inch aftermarket speakers. Confirm cab configuration and rear-door fitment before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e two rear-door 6.5-inch adapter rings.\u003c\/p\u003e\u003ch3\u003e2014–2026 — Complete Set — Front 8 + Rear 6.5\u003c\/h3\u003e\u003cp\u003eThis four-ring package is for a system using compatible 8-inch front speakers and 6.5-inch rear speakers. It makes sense when the full four-door system is being built at once and the larger front drivers physically clear the truck.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFor 2014–2021 trucks, the front 8-inch installation requires inner-door metal trimming.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e two front 8-inch adapter rings and two rear 6.5-inch adapter rings.\u003c\/p\u003e\u003ch3\u003e2014–2026 — Complete Set — Front 6.5 + Rear 6.5\u003c\/h3\u003e\u003cp\u003eChoose this package when all four doors are being upgraded with compatible 6.5-inch speakers. It combines the front conversion pair and rear pair instead of ordering the locations separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e two front 6.5-inch adapter rings and two rear 6.5-inch adapter rings.\u003c\/p\u003e\u003ch3\u003e2014–2026 — Complete Set — Front 6x9 + Rear 6.5\u003c\/h3\u003e\u003cp\u003eThis is the complete four-door set when the front stage uses compatible 6x9-inch speakers and the rear doors use 6.5s. Choose it when that exact speaker-size combination matches the system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e two front 6x9-inch adapter rings and two rear 6.5-inch adapter rings.\u003c\/p\u003e\u003ch3\u003eWhat Is Included — and What Is Not\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eAdapter rings only.\u003c\/strong\u003e Speakers, wiring harnesses, bolts, screws, nuts, washers, gasket material, foam, and sound treatment are not included.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3D-printed ASA construction\u003c\/li\u003e\n\u003cli\u003eDesigned and manufactured in-house by SMS Precision\u003c\/li\u003e\n\u003cli\u003eVehicle-specific factory-location geometry\u003c\/li\u003e\n\u003cli\u003eSold as matched driver- and passenger-side pairs or four-ring sets, depending on the selected configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment That Matters\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFor supported 2007–2026 Chevrolet Silverado and GMC Sierra applications. Select the correct year range before choosing speakers.\u003c\/li\u003e\n\u003cli\u003eRear 6.5-inch options apply only to trucks equipped with compatible rear-door speaker locations.\u003c\/li\u003e\n\u003cli\u003eConfirm the exact vehicle year, model, cab configuration, trim, factory audio system, speaker cutout, basket shape, mounting depth, bolt pattern, window-track clearance, and factory-grille clearance before ordering.\u003c\/li\u003e\n\u003cli\u003eNominal speaker size alone does not guarantee compatibility with every aftermarket speaker model.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCheck the Speaker Before You Order\u003c\/h3\u003e\u003cp\u003eSpeaker dimensions in the configurator are based on manufacturer specifications and supported fitment data. Manufacturers can revise a basket, frame, or mounting dimension without changing the model name.\u003c\/p\u003e\u003cp\u003eIf your speaker has a cutout template or specification sheet, compare its cutout and outside-frame measurements with the dimensions shown. If they differ—or your exact speaker model is not listed—choose \u003cstrong\u003eBuilt to Custom Size\u003c\/strong\u003e and provide the measurements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMounting-depth responsibility:\u003c\/strong\u003e Matching the adapter cutout and frame does not guarantee clearance inside the vehicle. The buyer is responsible for confirming clearance from the window, regulator, door metal, wiring, factory grille, and interior panel. Deep pro-audio speakers, large magnets, and high-excursion drivers may require additional spacing, trimming, or vehicle modification.\u003c\/p\u003e\u003cp\u003eThis is a vehicle-specific, made-to-order SMS Precision product. Orders cannot be canceled or refunded after production begins, except where applicable law requires otherwise.\u003c\/p\u003e","brand":"SMS Precision","offers":[{"title":"2014–2026 \/ Front Doors — 8-Inch Speaker Pair","offer_id":51676366536937,"sku":"SMS-GM1426-F8-PAIR","price":79.99,"currency_code":"USD","in_stock":true},{"title":"2014–2026 \/ Front Doors — 6.5-Inch Speaker Pair","offer_id":51676366569705,"sku":"SMS-GM1426-F65-PAIR","price":79.99,"currency_code":"USD","in_stock":true},{"title":"2014–2026 \/ Front Doors — 6x9-Inch Speaker Pair","offer_id":51676366602473,"sku":"SMS-GM1426-F69-PAIR","price":79.99,"currency_code":"USD","in_stock":true},{"title":"2014–2026 \/ Rear Doors — 6.5-Inch Speaker Pair","offer_id":51676366635241,"sku":"SMS-GM1426-R65-PAIR","price":69.99,"currency_code":"USD","in_stock":true},{"title":"2014–2026 \/ Complete Set — Front 8-Inch + Rear 6.5-Inch","offer_id":51676366668009,"sku":"SMS-GM1426-F8-R65-SET","price":139.99,"currency_code":"USD","in_stock":true},{"title":"2014–2026 \/ Complete Set — Front 6.5-Inch + Rear 6.5-Inch","offer_id":51676366700777,"sku":"SMS-GM1426-F65-R65-SET","price":139.99,"currency_code":"USD","in_stock":true},{"title":"2014–2026 \/ Complete Set — Front 6x9-Inch + Rear 6.5-Inch","offer_id":51676366733545,"sku":"SMS-GM1426-F69-R65-SET","price":139.99,"currency_code":"USD","in_stock":true},{"title":"2007–2013 \/ Complete Set — Front 6.5-Inch + Rear 6.5-Inch","offer_id":51765030125801,"sku":"SMS-GM0713-F65-R65-SET","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0311\/8134\/0811\/files\/sms-precision-chevy-gmc-speaker-adapter-rings-01_8c98aee5-1d90-42d4-be5d-bc65a53ff8d9.png?v=1788757275"},{"product_id":"sms-precision-2014-2026-chevrolet-silverado-gmc-sierra-tweeter-adapter-brackets","title":"SMS Precision 2014–2026 Chevy\/GMC Silverado \u0026 Sierra Tweeter Adapter Brackets","description":"\u003ch2\u003eGot the Tweeter? Now Make It Fit the Factory Location.\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eSale unit:\u003c\/strong\u003e Sold as one matched pair—two tweeter adapter brackets sized to the selected cutout or speaker preset.\u003c\/p\u003e\u003cp\u003ePicking the tweeter is only half the job. These SMS Precision brackets are built for compatible factory dash\/tweeter locations in 2014–2026 Chevrolet Silverado and GMC Sierra trucks, giving the selected aftermarket tweeter a proper mounting point instead of trying to force a universal bracket into the dash.\u003c\/p\u003e\u003cp\u003eEach pair is 3D-printed in-house from ASA for automotive use and produced to the selected tweeter mounting cutout diameter.\u003c\/p\u003e\u003ch3\u003eWhat You Get\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eTwo vehicle-specific tweeter adapter brackets\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eAdapter brackets only.\u003c\/strong\u003e Tweeters, wiring harnesses, screws, bolts, and other hardware are not included.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2014–2026 Chevrolet Silverado\u003c\/li\u003e\n\u003cli\u003e2014–2026 GMC Sierra\u003c\/li\u003e\n\u003cli\u003eCompatible factory dash\/tweeter mounting locations\u003c\/li\u003e\n\u003cli\u003e1500 and HD model-year transitions vary by generation; verify the exact vehicle, trim, and factory audio package before ordering.\u003c\/li\u003e\n\u003cli\u003eBose and non-Bose applications may use this mounting pattern; confirm the exact installation before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Earlier GM trucks may identify the corner-dash location as a dash speaker rather than a factory tweeter. These brackets are intended to mount an aftermarket tweeter into the compatible factory mounting location.\u003c\/p\u003e\u003ch3\u003eChoose the Cutout by the Part That Actually Mounts\u003c\/h3\u003e\u003cp\u003eNamed speaker options are speaker-specific presets. If your tweeter is not listed, select the generic cutout diameter that matches the mounting body or flush-mount cup. Generic cutout sizes are available for tweeters from ARC, Kicker, Morel, Focal, JL Audio, Gladen\/Mosconi, and other brands.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo not select by dome size.\u003c\/strong\u003e Measure the portion of the tweeter or mounting cup that actually passes through the bracket opening. Confirm body diameter, flange diameter, and available mounting depth before ordering.\u003c\/p\u003e\u003ch3\u003eConstruction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3D-printed ASA\u003c\/li\u003e\n\u003cli\u003eMade to order by SMS Precision\u003c\/li\u003e\n\u003cli\u003eSold as a pair\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eExact fit can vary by speaker model, mounting cup, trim level, and factory audio package. Verify the truck and the tweeter before ordering.\u003c\/p\u003e","brand":"SMS Precision","offers":[{"title":"33 mm \/ 1.30-Inch","offer_id":51677394305257,"sku":"SMS-GM1426-TW-33","price":29.99,"currency_code":"USD","in_stock":true},{"title":"35 mm \/ 1.38-Inch","offer_id":51677309993193,"sku":"SMS-GM1426-TW-35","price":29.99,"currency_code":"USD","in_stock":true},{"title":"36 mm \/ 1.42-Inch","offer_id":51677310025961,"sku":"SMS-GM1426-TW-36","price":29.99,"currency_code":"USD","in_stock":true},{"title":"37 mm \/ 1.46-Inch","offer_id":51677310058729,"sku":"SMS-GM1426-TW-37","price":29.99,"currency_code":"USD","in_stock":true},{"title":"38 mm \/ 1.50-Inch","offer_id":51677310091497,"sku":"SMS-GM1426-TW-38","price":29.99,"currency_code":"USD","in_stock":true},{"title":"39 mm \/ 1.54-Inch","offer_id":51677310124265,"sku":"SMS-GM1426-TW-39","price":29.99,"currency_code":"USD","in_stock":true},{"title":"40 mm \/ 1.57-Inch","offer_id":51677310157033,"sku":"SMS-GM1426-TW-40","price":29.99,"currency_code":"USD","in_stock":true},{"title":"41 mm \/ 1.61-Inch","offer_id":51677310189801,"sku":"SMS-GM1426-TW-41","price":29.99,"currency_code":"USD","in_stock":true},{"title":"42 mm \/ 1.65-Inch","offer_id":51677310222569,"sku":"SMS-GM1426-TW-42","price":29.99,"currency_code":"USD","in_stock":true},{"title":"43 mm \/ 1.69-Inch","offer_id":51677310255337,"sku":"SMS-GM1426-TW-43","price":29.99,"currency_code":"USD","in_stock":true},{"title":"44 mm \/ 1.73-Inch","offer_id":51677310288105,"sku":"SMS-GM1426-TW-44","price":29.99,"currency_code":"USD","in_stock":true},{"title":"45 mm \/ 1.77-Inch","offer_id":51677310320873,"sku":"SMS-GM1426-TW-45","price":29.99,"currency_code":"USD","in_stock":true},{"title":"46 mm \/ 1.81-Inch","offer_id":51677310353641,"sku":"SMS-GM1426-TW-46","price":29.99,"currency_code":"USD","in_stock":true},{"title":"47 mm \/ 1.85-Inch","offer_id":51677310386409,"sku":"SMS-GM1426-TW-47","price":29.99,"currency_code":"USD","in_stock":true},{"title":"48 mm \/ 1.89-Inch","offer_id":51677310419177,"sku":"SMS-GM1426-TW-48","price":29.99,"currency_code":"USD","in_stock":true},{"title":"49 mm \/ 1.93-Inch","offer_id":51677310451945,"sku":"SMS-GM1426-TW-49","price":29.99,"currency_code":"USD","in_stock":true},{"title":"50 mm \/ 1.97-Inch","offer_id":51677310484713,"sku":"SMS-GM1426-TW-50","price":29.99,"currency_code":"USD","in_stock":true},{"title":"51 mm \/ 2.01-Inch","offer_id":51677310517481,"sku":"SMS-GM1426-TW-51","price":29.99,"currency_code":"USD","in_stock":true},{"title":"52 mm \/ 2.05-Inch","offer_id":51677319069929,"sku":"SMS-GM1426-TW-52","price":29.99,"currency_code":"USD","in_stock":true},{"title":"53 mm \/ 2.09-Inch","offer_id":51677319102697,"sku":"SMS-GM1426-TW-53","price":29.99,"currency_code":"USD","in_stock":true},{"title":"54 mm \/ 2.13-Inch","offer_id":51677319135465,"sku":"SMS-GM1426-TW-54","price":29.99,"currency_code":"USD","in_stock":true},{"title":"57 mm \/ 2.24-Inch","offer_id":51677319168233,"sku":"SMS-GM1426-TW-57","price":29.99,"currency_code":"USD","in_stock":true},{"title":"58 mm \/ 2.28-Inch","offer_id":51677319201001,"sku":"SMS-GM1426-TW-58","price":29.99,"currency_code":"USD","in_stock":true},{"title":"ARC RS 1.0 — 41.0 mm \/ 1.613-Inch","offer_id":51677318938857,"sku":"SMS-GM1426-TW-ARC-RS10","price":29.99,"currency_code":"USD","in_stock":true},{"title":"ARC AS100 — 42.2 mm \/ 1.66-Inch","offer_id":51677318971625,"sku":"SMS-GM1426-TW-ARC-AS100","price":29.99,"currency_code":"USD","in_stock":true},{"title":"KICKER KS 3\/4-Inch — 33.0 mm \/ 1.30-Inch","offer_id":51677319004393,"sku":"SMS-GM1426-TW-KICKER-KS075","price":29.99,"currency_code":"USD","in_stock":true},{"title":"KICKER KS 1-Inch — 42.2 mm \/ 1.662-Inch","offer_id":51677319037161,"sku":"SMS-GM1426-TW-KICKER-KS100","price":29.99,"currency_code":"USD","in_stock":true},{"title":"ARC X2 1.0 — 42.2 mm \/ 1.66-Inch","offer_id":51677394862313,"sku":"SMS-GM1426-TW-ARC-X210","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0311\/8134\/0811\/files\/sms-car-audio-product-placeholder_d7ffbff7-5c90-4b08-bb68-72217f2e7d82.jpg?v=1787051412"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0311\/8134\/0811\/collections\/sms-chevy-crew-cab-big-bass-underseat.jpg?v=1787078350","url":"https:\/\/smscaraudio.com\/collections\/sms-precision-silverado-sierra-fitment.oembed","provider":"SMS Car Audio","version":"1.0","type":"link"}