{"product_id":"650b-hookless-carbon-mtb-rim-25mm-inner-asymmetric-xc","title":"650B Hookless Carbon MTB Rim, 27.5\" Asymmetric XC, 25mm Internal","description":"\u003ch2\u003e650B Hookless Carbon MTB Rim – Asymmetric, Tubeless, Lightweight\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSummary:\u003c\/strong\u003e Precision-engineered for cross-country and aggressive trail riding, the Bola 650B (27.5\") hookless carbon MTB rim weighs 315±10g (superlight) or 380±15g (standard), supports 2.1–2.4\" tubeless tires, and features a modern 25mm inner width. Fully ETRTO compliant for tire\/rim safety and tested to \u0026gt;280kgf spoke tension. 3-year warranty and OEM customization available for brands and teams.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e650B \/ 27.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRim Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInner Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e315 ± 10g (superlight); 380 ± 15g (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProfile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eU-shaped, Asymmetric (offset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTubeless Presta (French) valve compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpoke Holes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e28\/32 available, \u0026gt;280kgf tension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eToray unidirectional and woven carbon fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eETRTO 2023, ISO 4210-7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eXC \u0026amp; Trail Performance, Verified Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e25mm inner width excels with 2.1–2.4\" XC and trail tires, supporting 45–65psi, aligning with modern tire standards.\u003c\/li\u003e\n\u003cli\u003eAsymmetric offset design improves spoke angle to balance tension, increasing lateral rigidity and durability for racing and all-mountain use.\u003c\/li\u003e\n\u003cli\u003eHookless tubeless profile reduces pinch flats, supports lower tire pressure, and ensures secure tire fit.\u003c\/li\u003e\n\u003cli\u003eMeets ETRTO and ISO industry standards for rim\/tire safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison Table: 650B Carbon MTB Rims\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eBola 650B\u003c\/th\u003e\n\u003cth\u003eUltra XC Comp\u003c\/th\u003e\n\u003cth\u003eOEM 650B Pro\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (g)\u003c\/td\u003e\n\u003ctd\u003e315 \/ 380\u003c\/td\u003e\n\u003ctd\u003e370\u003c\/td\u003e\n\u003ctd\u003e400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width (mm)\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAsymmetric\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Height (mm)\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTubeless Hookless\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 years\u003c\/td\u003e\n\u003ctd\u003e2 years\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is a 25mm inner width rim suitable for modern XC and trail tires?\u003c\/strong\u003e \u003cbr\u003eA: Yes, 25mm inner width accommodates 2.1–2.4\" tires, optimizing contact patch and support at lower pressures for cross-country and aggressive trail use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Are hookless rims safe for aggressive riding?\u003c\/strong\u003e \u003cbr\u003eA: This rim is ETRTO certified, designed for 45–65psi, and tested to \u0026gt;280kgf spoke tension for reliable tubeless performance in racing and trail environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the main advantage of an asymmetric (offset) rim in MTB?\u003c\/strong\u003e \u003cbr\u003eA: Offset increases spoke tension balance between drive\/non-drive sides, improving wheel stiffness and longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What tire and hub standards are compatible?\u003c\/strong\u003e \u003cbr\u003eA: Compatible with 27.5\"\/650B wheels, ETRTO-compliant tubeless tires (2.1–2.4\"), and Boost\/non-Boost hubs supporting 28–32 spokes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How does the rim compare with other ultralight 650B options?\u003c\/strong\u003e \u003cbr\u003eA: The Bola rim offers lower verified weight, ETRTO\/ISO compliance, asymmetric design, and OEM customization for brand-focused buyers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ 28\/28 \/ 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