{"product_id":"sugino-zen-track-chainring-144mm-57t-through-58t","title":"Sugino Zen Track Chainring 144mm - 57T through 58T","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSugino Zen Track Chainring 144mm\u003c\/strong\u003e has earned its place at the velodrome through competition — this is the same chainring that has appeared on Olympic and World Championship podiums. Machined to tight tolerances for the 144mm bolt circle diameter standard, it delivers the rigid, direct power transfer that track sprinting and pursuit racing demand. Available in 57T and 58T, both in black, these tooth counts are suited to riders pushing serious gear ratios at high cadence on the boards.\u003c\/p\u003e\n\n\u003cp\u003eThe Zen's narrow tooth profile and precise machining are designed to minimize chain flex, keeping drivetrain losses as low as possible when watts are the only currency that matters. At this level of competition, a chainring that holds its line under load isn't a luxury — it's the baseline.\u003c\/p\u003e\n\n\u003ch3\u003eSugino Zen Track Chainring 144mm Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt Circle Diameter:\u003c\/strong\u003e 144mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Tooth Counts:\u003c\/strong\u003e 57T, 58T\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Track drivetrains with 144mm BCD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntended Use:\u003c\/strong\u003e Velodrome \/ track racing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Sugino","offers":[{"title":"57t \/ Black","offer_id":43521236238380,"sku":"CRSU081BK57","price":579.99,"currency_code":"USD","in_stock":true},{"title":"58t \/ Black","offer_id":43521236271148,"sku":"CRSU081BK58","price":579.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sugino-zen-track-chainring-144mm-57t-through-58t-1809905.jpg?v=1771296428","url":"https:\/\/ricycles.com\/products\/sugino-zen-track-chainring-144mm-57t-through-58t","provider":"RA Cycles","version":"1.0","type":"link"}