{"product_id":"box-two-chainring","title":"Box Two Chainring","description":"\u003ch2\u003eBox Two Chainring\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Box Two chainring is a precision-manufactured sprocket engineered for competitive BMX racing. The 6061-T6 aluminum construction with lightweight cutouts delivers exceptional stiffness-to-weight ratio while maintaining perfect roundness and true engagement across all tooth positions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e6061-T6 aluminum alloy\u003c\/strong\u003e – Aerospace-grade aluminum provides superior strength and precision compared to standard alloys; material properties ensure consistent performance across extended use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the USA\u003c\/strong\u003e – Domestically manufactured quality ensures consistent production standards and material traceability; supports local manufacturing standards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e104 BCD four-bolt compatibility\u003c\/strong\u003e – Standard modern crank spider pattern compatible with most contemporary BMX cranks; proven attachment system without adapter hardware\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/32\" chain compatible\u003c\/strong\u003e – Standard BMX chain width works with any 3\/32\" single-speed chain without compatibility concerns\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack anodized finish with laser-etched graphics\u003c\/strong\u003e – Professional corrosion-resistant finish maintains appearance and performance in wet conditions; laser-etched branding provides durability without paint degradation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized for stiffness\u003c\/strong\u003e – Engineering emphasis on rigidity reduces flex under pedaling load; minimizes energy loss and improves power transfer efficiency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight cutouts\u003c\/strong\u003e – Strategic material removal reduces weight without sacrificing structural integrity; competitive weight advantage without compromising durability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5mm thickness\u003c\/strong\u003e – Precision thickness balances strength and weight for optimal racing performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable tooth counts\u003c\/strong\u003e – 38T through 45T range accommodates various gear ratio preferences and riding styles without custom ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision roundness and trueness\u003c\/strong\u003e – CNC manufacturing ensures perfect tooth alignment and consistent engagement across all sprocket positions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: BMX chainring\u003c\/li\u003e\n\u003cli\u003eBCD: 104mm four-bolt\u003c\/li\u003e\n\u003cli\u003eMaterial: 6061-T6 aluminum alloy\u003c\/li\u003e\n\u003cli\u003eOrigin: Made in USA\u003c\/li\u003e\n\u003cli\u003eThickness: 3.5mm\u003c\/li\u003e\n\u003cli\u003eChain compatibility: 3\/32\" standard BMX chain\u003c\/li\u003e\n\u003cli\u003eFinish: Black anodized with laser-etched graphics\u003c\/li\u003e\n\u003cli\u003eTooth count options: 38T-45T\u003c\/li\u003e\n\u003cli\u003eWeights by tooth count:\n\u003cul\u003e\n\u003cli\u003e38T: 73g (2.57oz)\u003c\/li\u003e\n\u003cli\u003e39T: 78g (2.75oz)\u003c\/li\u003e\n\u003cli\u003e40T: 79g (2.78oz)\u003c\/li\u003e\n\u003cli\u003e41T: 84g (2.96oz)\u003c\/li\u003e\n\u003cli\u003e42T: 87g (3.07oz)\u003c\/li\u003e\n\u003cli\u003e43T: 90g (3.17oz)\u003c\/li\u003e\n\u003cli\u003e44T: 92g (3.25oz)\u003c\/li\u003e\n\u003cli\u003e45T: 96g (3.38oz)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eApplication: BMX racing and performance riding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility and Ideal Use Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCompatible exclusively with 104 BCD four-bolt cranks; verify crank spider pattern before purchase. Ideal for competitive BMX racers seeking lightweight, precision-manufactured chainring performance. Suitable for high-level BMX racing where gear ratio customization and weight optimization matter. The wide tooth count range (38T-45T) accommodates different riding disciplines and speed preferences without committing to single ratio. Works with any standard 3\/32\" BMX single-speed chain. Recommended for competitive racers, performance-focused builders, and anyone prioritizing USA-manufactured precision chainring construction with aerospace-grade materials and racing-optimized stiffness engineering.\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBCD\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e104mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e6061-T6 Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eThickness\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e38 Tooth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e73 grams \/ 2.57 ounces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e39 Tooth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e78 grams \/ 2.75 ounces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e40 Tooth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e79 grams \/ 2.78 ounces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e41 Tooth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e84 grams \/ 2.96 ounces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e42 Tooth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e87 grams \/ 3.07 ounces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e43 Tooth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 grams \/ 3.17 ounces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e44 Tooth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e92 grams \/ 3.25 ounces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e45 Tooth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e96 grams \/ 3.38 ounces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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":"38","offer_id":45037883719859,"sku":"BX-CR144B40T-BK","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8737\/2979\/files\/box-two-chainring.jpg?v=1783445049","url":"https:\/\/time2shinebmx.com\/products\/box-two-chainring","provider":"Time 2 Shine ","version":"1.0","type":"link"}