{"product_id":"box-hex-lab-carbon-20-rim-406mm-36h","title":"Box Hex Lab Carbon 20\" Rim 406mm 36h","description":"\u003ch1\u003eBox Hex Lab Carbon 20\" Rim 406mm 36H\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e The Box Hex Lab Carbon is a 20\" BMX rim engineered with Ultra High Modulus carbon fiber and Oversized Technology for maximum steering and pedaling stiffness. Available in brake-ready (rear) and brake-less (front) profiles, it's tubeless-compatible and designed to transfer power and control directly to the ground with minimal latency. The Symmetrical Dihedral Angle Stabilizers provide the stiffness and durability of a wider rim profile without excess weight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra High Modulus Carbon Fiber\u003c\/strong\u003e – Higher stiffness-to-weight ratio than standard carbon variants; provides responsive handling and power transfer with reduced flex during tricks and high-load movements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSymmetrical Dihedral Angle Stabilizers\u003c\/strong\u003e – Sculpted bullet-shaped spoke beds bridge the angled rim flanks to the vertical plane, achieving wide-rim stiffness without the weight penalty of a full wide-profile design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachined Brake Track (Rear)\u003c\/strong\u003e – Precision-finished braking surface ensures consistent pad contact and smooth modulation; rear model includes brake track; front model is brake-less\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeless Ready\u003c\/strong\u003e – Compatible with both traditional tubed and modern tubeless tire setups, expanding tire and pressure options\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e36-Hole Configuration\u003c\/strong\u003e – Standard spoke count for maximum load distribution and spoke redundancy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30mm Internal Rim Width\u003c\/strong\u003e – Optimized for 20\" BMX tire compatibility while maintaining structural rigidity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFoil Stamped Chrome Logos\u003c\/strong\u003e – Durable graphic finish that won't fade or peel under UV exposure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWheel Size: 20\" (406mm ETRTO)\u003c\/li\u003e\n\u003cli\u003eSpoke Holes: 36 (drilled)\u003c\/li\u003e\n\u003cli\u003eMaterial: Ultra High Modulus Carbon Fiber\u003c\/li\u003e\n\u003cli\u003eInternal Rim Width: 30mm\u003c\/li\u003e\n\u003cli\u003eERD (Effective Rim Diameter): 369mm\u003c\/li\u003e\n\u003cli\u003eBrake Profile: Rear brake-ready or front brake-less\u003c\/li\u003e\n\u003cli\u003eBrake Track: Machined (rear only)\u003c\/li\u003e\n\u003cli\u003eTubeless Compatible: Yes\u003c\/li\u003e\n\u003cli\u003eRecommended Spoke Tension: 110–115kg (varies per rim)\u003c\/li\u003e\n\u003cli\u003eWeight: Not specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility and Ideal Use Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e 20\" BMX bikes with 36-hole hubs; both front and rear wheel positions (select correct profile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake Pad Requirement:\u003c\/strong\u003e Rear model requires Box Carbon Brake Pad Inserts—standard aluminum brake pads will void warranty and cause brake failure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest For:\u003c\/strong\u003e Riders prioritizing maximum stiffness, power transfer, and responsive handling; intermediate to advanced riders who benefit from reduced latency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTire Options:\u003c\/strong\u003e Works with standard tubed setups or modern tubeless tire systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal Riders:\u003c\/strong\u003e Performance-focused BMX riders seeking high-end component upgrades; those running complete Box Oversized systems for optimal integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Notes\u003c\/strong\u003e Box Carbon rims require carbon-specific brake pads. Use of incorrect brake pads voids warranty. Every rim has slight spoke tension variations; check tension during wheel build and maintain 110–115kg range during maintenance.\u003c\/p\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003eQ: What is the recommended spoke tension for this rim?\u003cbr\u003eA:We recommend a spoke tension of between 110kg and 115kg; remember, every rim is different.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003ci\u003e\u003cu\u003e\u003cspan style=\"font-size: small;\"\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003ci style=\"font-size: 0.875rem;\"\u003e\u003cu\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/i\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003ci style=\"font-size: 0.875rem;\"\u003e\u003cu\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cb\u003e**Due to unique nature of this item, ALL sales of this product are FINAL. No Refunds or Returns**\u003c\/b\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/i\u003e\u003c\/div\u003e","brand":"BOX COMPONENTS","offers":[{"title":"Black \/ Wheels - 20\"x1.5\"-1.75\" (406MM) \/ Front","offer_id":45483861704883,"sku":"BX-RM21C20175R-BK-Black-Wheels-20x15-175406MM-Front","price":449.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ Wheels - 20\"x1.5\"-1.75\" (406MM) \/ Rear","offer_id":45483861737651,"sku":"BX-RM21C20175R-BK-Black-Wheels-20x15-175406MM-Rear","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8737\/2979\/files\/box-hex-lab-carbon-20-rim-406mm-36h_1f3be23a-ce99-4582-a58f-9cb352c51c22.jpg?v=1782681293","url":"https:\/\/time2shinebmx.com\/products\/box-hex-lab-carbon-20-rim-406mm-36h","provider":"Time 2 Shine ","version":"1.0","type":"link"}