{"product_id":"s-m-bmx-atf-frame-20-wheels-multicolors","title":"S\u0026M BMX ATF Frame (20″ Wheels) Multicolors","description":"\u003ch1\u003eS\u0026amp;M ATF Frame (20\" Wheels)\u003c\/h1\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe S\u0026amp;M ATF (All Terrain Frame) is a versatile chromoly frame with balanced geometry for street, park, and dirt riding. Serves as the foundation for multiple S\u0026amp;M signature models and features butted Thermal-X tubing with an integrated head tube and seat clamp. Made in the USA with 100% chromoly construction. Available in four colorways.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable rear end (13.4–13.875\")\u003c\/strong\u003e – Rearward dropout slots allow chainstay length adjustment to fine-tune wheelbase for stability on transitions or tighter balance point for manuals and nose tricks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eButted Thermal-X tubeset\u003c\/strong\u003e – Variable wall thickness chromoly tubing strategically removes weight from low-stress areas while maintaining strength in critical impact zones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated seat clamp\u003c\/strong\u003e – Built-in clamp design eliminates external hardware and removes a common failure point caused by overtightened separate clamps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4Q-Baked dropouts\u003c\/strong\u003e – Heat-treated 14mm slot dropouts increase hardness and tensile strength to resist flex and cracking under pedaling torque and landing impacts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMid BB height (11.7\")\u003c\/strong\u003e – Balanced bottom bracket position provides stable platform without excessive risk of pedal strikes during grinds or technical obstacles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75° head tube angle\u003c\/strong\u003e – Steeper geometry delivers responsive steering input while maintaining predictable handling at speed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread-on 990 brake mounts\u003c\/strong\u003e – Removable U-brake bosses keep frame clean when running brakeless, sold separately for riders who need stopping power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8.5\" standover height\u003c\/strong\u003e – Lower than XL models for riders under 6'1\" who need proper clearance without excessive height\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop Tube Lengths:\u003c\/strong\u003e 20.5\", 20.75\", 21\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear End Length:\u003c\/strong\u003e 13.4–13.875\" (adjustable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Tube Angle:\u003c\/strong\u003e 75°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Tube Style:\u003c\/strong\u003e Integrated (45°\/45°, 41.8mm internal diameter)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Tube Angle:\u003c\/strong\u003e 71°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Clamp:\u003c\/strong\u003e Integrated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Post Size:\u003c\/strong\u003e 1\" (25.4mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom Bracket Height:\u003c\/strong\u003e 11.7\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom Bracket Style:\u003c\/strong\u003e Mid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandover Height:\u003c\/strong\u003e 8.5\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake Mounts:\u003c\/strong\u003e Thread-on 990 (mounts sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDropouts:\u003c\/strong\u003e 14mm slot, 4Q-Baked\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGyro Tabs:\u003c\/strong\u003e None\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.65 lb (2.12 kg)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeset:\u003c\/strong\u003e Butted Thermal-X chromoly tubing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Colors:\u003c\/strong\u003e Four options\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility and Ideal Use Cases\u003c\/h2\u003e\n\u003cp\u003eThis frame is designed for standard 20\" BMX wheels and suits riders approximately 5'6\" to 6'0\" tall. Requires forks with integrated race systems (45°\/45° angular contact bearings with 41.8mm crown race diameter). The integrated seat clamp accepts 1\" (25.4mm) diameter seat posts only. 14mm slot dropouts accommodate 14mm bolt-on axles or 3\/8\" axles using adapter sleeves. Thread-on 990 brake mounts must be purchased separately if running brakes. No gyro tabs means this frame supports brakeless or direct-cable brake setups only. The adjustable rear end allows riders to dial in chainstay length: shorter settings (13.4\") improve maneuverability and manual balance, while longer settings (13.875\") increase stability for transitions and high-speed riding. Best suited for riders who need one frame capable of handling multiple terrain types without geometry compromises.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"S\u0026M Bikes","offers":[{"title":"Flat Black \/ 20.5\"","offer_id":45037198737587,"sku":"01-ATF-BLK-20.5","price":519.95,"currency_code":"USD","in_stock":true},{"title":"Flat Black \/ 20.75\"","offer_id":45037198770355,"sku":"01-ATF-BLK-20.75","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Flat Black \/ 21\"","offer_id":45037198803123,"sku":"01-ATF-BLK-21.0","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Flat Black \/ 21.25\"","offer_id":45524521975987,"sku":"01-ATF-BLK-21.25","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Gloss Clear \/ 20.5\"","offer_id":45037198606515,"sku":"01-ATF-GC-20.5","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Gloss Clear \/ 20.75\"","offer_id":45037198639283,"sku":"01-ATF-GC-20.75","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Gloss Clear \/ 21\"","offer_id":45037198672051,"sku":"01-ATF-GC-21.0","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Gloss Clear \/ 21.25\"","offer_id":45524522008755,"sku":"01-ATF-GC-21.25","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Trans Gold \/ 20.5\"","offer_id":45156952277171,"sku":"01-ATF-TGLD-20.5","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Trans Gold \/ 20.75\"","offer_id":45156952309939,"sku":"01-ATF-TGLD-20.75","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Trans Gold \/ 21\"","offer_id":45156952342707,"sku":"01-ATF-TGLD-21.0","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Trans Gold \/ 21.25\"","offer_id":45524522041523,"sku":"01-ATF-TGLD-21.25","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Trans Red \/ 20.5\"","offer_id":45156952375475,"sku":"01-ATF-TRD-20.5","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Trans Red \/ 20.75\"","offer_id":45156952408243,"sku":"01-ATF-TRD-20.75","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Trans Red \/ 21\"","offer_id":45156952441011,"sku":"01-ATF-TRD-21.0","price":519.95,"currency_code":"USD","in_stock":false},{"title":"Trans Red \/ 21.25\"","offer_id":45524522074291,"sku":"01-ATF-TRD-21.25","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8737\/2979\/files\/01-ATF-BLK-5_6_c0f10c76-1ae5-4398-9204-79d41c4053d7.jpg?v=1782952757","url":"https:\/\/time2shinebmx.com\/products\/s-m-bmx-atf-frame-20-wheels-multicolors","provider":"Time 2 Shine ","version":"1.0","type":"link"}