{"product_id":"meroca-rao-hollow-integrated-crankset-170mm-32-34-38t-narrow-wide-chainring-24mm-spindle-8-12-speed-mtb-single-ring","title":"MEROCA RAO Hollow Integrated Crankset 170mm 32\/34\/38T Narrow-Wide Chainring 24mm Spindle, 8-12 Speed MTB Single Ring","description":"\u003cdiv class=\"detailmodule_html\"\u003e\n\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv class=\"ybc-p\"\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003eUpgrade your mountain bike or folding bike drivetrain with the \u003cstrong\u003eMEROCA RAO Hollow Integrated Crankset\u003c\/strong\u003e. Forged from lightweight \u003cstrong\u003ealuminum alloy\u003c\/strong\u003e, this single-ring crank features a \u003cstrong\u003enarrow-wide (positive\/negative tooth) chainring\u003c\/strong\u003e design to keep the chain securely in place—no chain guide needed. With a 24mm spindle, 170mm arm length, and 8–12 speed compatibility, it’s a solid, wallet-friendly upgrade for MTB single-speed \/ 1x builds.\u003c\/div\u003e\n\u003chr\u003e\n\u003cdiv class=\"ybc-p\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e✅ \u003cstrong\u003eHollow Integrated Design\u003c\/strong\u003e – Reduces weight while maintaining stiffness; left\/right crank arms weigh just \u003cstrong\u003e700g\u003c\/strong\u003e together.\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e✅ \u003cstrong\u003eNarrow-Wide Chainring (Positive\/Negative Teeth)\u003c\/strong\u003e – Excellent chain retention on rough terrain; ideal for 1x drivetrains.\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e✅ \u003cstrong\u003eMulti-Tooth \u0026amp; Multi-Speed\u003c\/strong\u003e – Available in \u003cstrong\u003e32T \/ 34T \/ 38T\u003c\/strong\u003e; compatible with \u003cstrong\u003e8\/9\/10\/11\/12 speed\u003c\/strong\u003e chains (note: original source text had a double colon \"速别::\" and listed 8\/9\/10\/11\/12, main title emphasizes 9-12 MTB mod).\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e✅ \u003cstrong\u003e24mm Spindle, 118mm Length\u003c\/strong\u003e – Standard 24mm outer-diameter axle, 118mm spindle length fits common BSA\/BB shells (confirm BB type before order).\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e✅ \u003cstrong\u003e170mm Crank Arm\u003c\/strong\u003e – Balanced leverage and pedal clearance for most riders.\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e✅ \u003cstrong\u003eTwo Color Options\u003c\/strong\u003e – Black \/ Red anodized finish to match your bike's style.\u003c\/div\u003e\n\u003chr\u003e\n\u003cdiv class=\"ybc-p\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"hyc-common-markdown__table-wrapper\"\u003e\n\u003cdiv class=\"hyc-common-markdown__table-actions-sticky\" id=\"tableActionsPanel\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\n\u003cdiv class=\"ybc-p\"\u003eParameter\u003c\/div\u003e\n\u003c\/th\u003e\n\u003cth\u003e\n\u003cdiv class=\"ybc-p\"\u003eDetails\u003c\/div\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eBrand\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eMEROCA\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eModel\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eRAO\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eProduct\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eHollow Integrated Crankset \/ Single Ring Crankset\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eMaterial\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eAluminum Alloy\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eCrank Arm Length\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003e170 mm\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eChainring Teeth\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003e32T \/ 34T \/ 38T (Narrow-Wide \/ Positive-Negative Tooth)\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eSpindle \/ Axle OD\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003e24 mm\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eSpindle Length\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003e118 mm\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eWeight (Left + Right Crank)\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003e700 g (chainring\/bb weight not included unless specified)\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eSpeed Compatibility\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003e8 \/ 9 \/ 10 \/ 11 \/ 12 Speed\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eColors\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eBlack \/ Red\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eApplication\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"ybc-p\"\u003eMTB, folding bike 1x conversion, single-disc modification\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003cdiv class=\"ybc-p\"\u003e\u003cstrong\u003eWhy Choose the MEROCA RAO Hollow Crankset?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter chain security\u003c\/strong\u003e – Narrow-wide teeth grip the chain firmly, reducing drops on bumps and jumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight yet rigid\u003c\/strong\u003e – Hollow aluminum forging cuts grams (700g crank arms) without sacrificing pedaling stiffness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1x drivetrain ready\u003c\/strong\u003e – Ditch the front derailleur and simplify your cockpit; perfect for modern MTB or minimalist folder builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-play with 24mm BBs\u003c\/strong\u003e – Standard 24x118mm axle fits most 68\/73mm BSA bottom brackets (BB sold separately).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdiv class=\"ybc-p\"\u003e\u003cstrong\u003eInstallation Note\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e⚠️ Confirm your bottom bracket shell width, BB type, and chainline requirement before ordering.\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e⚠️ 24mm spindle \/ 118mm length typically suits 68–73mm BSA shells; measure your existing setup first.\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e⚠️ Torque crank bolts to the correct spec; check chainring bolts and re-tighten after the first 50 km.\u003c\/div\u003e\n\u003chr\u003e\n\u003cdiv class=\"ybc-p\"\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e1 × MEROCA RAO Left Crank Arm\u003c\/li\u003e\n\u003cli\u003e1 × MEROCA RAO Right Crank Arm (with 24mm integrated spindle)\u003c\/li\u003e\n\u003cli\u003e1 × Narrow-Wide Chainring (32T \/ 34T \/ 38T selected variant)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"ybc-p\"\u003e\u003cem\u003e(Bottom bracket and pedals not included unless stated in your variant.)\u003c\/em\u003e\u003c\/div\u003e\n\u003chr\u003e\n\u003cdiv class=\"ybc-p\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp style=\"text-size-adjust: 100%; line-height: normal; color: rgb(34, 34, 34); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S49859838c4324ba0bdb01fd8a2f2fba7E.jpg\" 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src=\"https:\/\/ae01.alicdn.com\/kf\/S5500305c83bc4d6eb5c846a9da41376cy.jpg\"\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cdiv\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sc4e316513ed04c358b08d7a7fb3095aah.jpg\"\u003e\u003cbr\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S2cffbd6219b34675a728f9d337a44c55L.jpg\"\u003e\u003cbr\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S4464c2fa7c3f47e7afa186c282455210M.jpg\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"MEROCA ONLINE STORE","offers":[{"title":"Black Crank","offer_id":50777732350244,"sku":"Black Crank","price":32.0,"currency_code":"USD","in_stock":true},{"title":"Black Crank BB","offer_id":50777732317476,"sku":"Black Crank 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34T","offer_id":50777732579620,"sku":"Red Crank BB 34T","price":45.9,"currency_code":"USD","in_stock":true},{"title":"Red Crank BB 36T","offer_id":50777732612388,"sku":"Red Crank BB 36T","price":45.9,"currency_code":"USD","in_stock":true},{"title":"Red Crank BB 38T","offer_id":50777732546852,"sku":"Red Crank BB 38T","price":45.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/3687\/0948\/files\/1753383648128qvw_1751361097912.jpg?v=1751361100","url":"https:\/\/meroca-bike.com\/products\/meroca-rao-hollow-integrated-crankset-170mm-32-34-38t-narrow-wide-chainring-24mm-spindle-8-12-speed-mtb-single-ring","provider":"MEROCA ONLINE STORE","version":"1.0","type":"link"}