{"product_id":"rollcii-1x-chainring-38t-bcd104-4-bolt-7075-t6-aluminum-polish-silver","title":"ROLLCii 1X Chainring 38T, BCD104 4-Bolt, 7075-T6 Aluminum, Polish Silver","description":"\u003cp\u003e\u003cstrong\u003eROLLCii 1X Chainring 38T, BCD104 4-Bolt, 7075-T6 Aluminum, Polish Silver\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePart of Veloci Cycle's ROLLCii precision-parts line, this is a dedicated 1x narrow-wide chainring built for 104mm BCD, 4-bolt crank spiders — a straightforward way to convert an older mountain bike drivetrain to a simpler, more reliable 1x setup. CNC machined from a 4mm-thick 7075-T6 aluminum plate, it's non-directional and mounts to either side of the spider.\u003c\/p\u003e\u003cp\u003eThe narrow-wide tooth profile keeps the chain seated over rough terrain, and it's compatible with most 9 to 12-speed chains across brands, so it drops onto most existing 1x or converted drivetrains without a special chain.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTooth count: 38T\u003c\/li\u003e\n\u003cli\u003eBolt circle diameter (BCD): 104mm, 4-bolt\u003c\/li\u003e\n\u003cli\u003eMaterial: 7075-T6 aluminum, CNC machined from 4mm plate\u003c\/li\u003e\n\u003cli\u003eFinish: Polish silver\u003c\/li\u003e\n\u003cli\u003eChain compatibility: Most 9-12 speed chains\u003c\/li\u003e\n\u003cli\u003eNon-directional: fits either side of the spider\u003c\/li\u003e\n\u003cli\u003eChainring bolt requirement: 6mm (not included)\u003c\/li\u003e\n\u003cli\u003eReference weight: 67g at 38T\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ban Lin Enterprise Co","offers":[{"title":"Default Title","offer_id":53248102367514,"sku":"CW-AL38TBCD104NWSL","price":119.99,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/3441\/0950\/files\/CW-AL38TBCD104NWSL.webp?v=1793314203","url":"https:\/\/rider18.co.nz\/products\/rollcii-1x-chainring-38t-bcd104-4-bolt-7075-t6-aluminum-polish-silver","provider":"Rider 18","version":"1.0","type":"link"}