{"product_id":"e-thirteen-helix-race-107-bcd-chainring-black","title":"e*thirteen Helix Race 107 BCD Chainring - Black","description":"\u003cp\u003eThe Helix Race 107 BCD Chainring is a high-value quality upgrade for Gravel and Road Cyclists using 4-bolt 107 BCD cranks such as SRAM\u003cspan\u003e®\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eXPLR or Power Meter Cranks like Quarq Force or Rival. Take full advantage of e*thirteen’s widest range cassettes by dropping 2 teeth or more in chainring size with our smaller 38, 40, and 42T sizes. A combo that supports steeper climbs and faster descents.\u003c\/p\u003e\n\u003cp\u003eHelix Race 107 BCD rings are forged from long-wearing 7075 alloy and CNC optimized for stiffness, lightweight, and chain-retaining performance. Black \u0026amp; grey color options to coordinate with e*thirteen 9-45T and 9-50T cassettes. Like all e*thirteen chainrings, they feature cross-compatible tooth profiles, switching seamlessly between SRAM® or Shimano® 11 and 12-speed drivetrains for absolute build freedom. Chainline is determined by SRAM® crank assembly, 45mm for normal width cranks, 47.5mm for wide cranks.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003eCompatibility: Compatible with 4-bolt 107 BCD SRAM® cranks and Quarq® power meter cranks\u003cbr data-start=\"109\" data-end=\"112\"\u003eMaterial: 7075 Aluminum\u003cbr data-start=\"135\" data-end=\"138\"\u003eSize: 38T, 40T, 42T\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eMfr Claimed Weight\u003c\/strong\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e38T: 66g\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e40T: 74g\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e42T: 80g\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-699e62a6-fb84-8322-8708-f0a6d94b37b7-29\" data-testid=\"conversation-turn-100\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003cdiv aria-hidden=\"true\" data-edge=\"true\" class=\"pointer-events-none h-px w-px absolute bottom-0\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"e*thirteen","offers":[{"title":"38t","offer_id":51418419069144,"sku":"ETG-CR4HRA-148","price":157.95,"currency_code":"AUD","in_stock":true},{"title":"40t","offer_id":51418419101912,"sku":"ETG-CR4HRA-149","price":157.95,"currency_code":"AUD","in_stock":true},{"title":"42t","offer_id":51418419134680,"sku":"ETG-CR4HRA-150","price":157.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2348\/1571\/files\/ethirteenHelixRace107BCDChainring-Black.png?v=1772018074","url":"https:\/\/ccache.cc\/zh\/products\/e-thirteen-helix-race-107-bcd-chainring-black","provider":"CCACHE","version":"1.0","type":"link"}