{"product_id":"27-5-superlight-carbon-mtb-rim-34mm-inner-30mm-high-xc-trail","title":"27.5\" Superlight Carbon MTB Rim, 34mm Inner, 30mm High – XC\/Trail","description":"\u003ch2\u003e27.5\" Carbon MTB Rim – 34mm Inner, 30mm High, 390g\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Answer:\u003c\/strong\u003e This 27.5-inch carbon MTB rim is engineered for cross-country (XC) racing and all-mountain trail riding, offering a superlight 390g ±10g verified weight, 34mm wide inner channel, and 30mm rim height for optimal performance, lateral rigidity, and tire support.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-strength carbon fiber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerified Weight:\u003c\/strong\u003e 390g ±10g (superlight) | Alternative: 440g ±15g (standard)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Dimensions:\u003c\/strong\u003e 27.5 inch (650B) | 34mm inner width | 40mm outer width | 30mm rim height\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e Hookless, U-shape rim compatible with modern tubeless mountain bike tires\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrength:\u003c\/strong\u003e \u0026gt;300kg forward compressive strength, \u0026gt;50kg lateral torsion resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign Purpose:\u003c\/strong\u003e Cross-country, endurance, and technical all-mountain trail use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eERD:\u003c\/strong\u003e 540mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium:\u003c\/strong\u003e \u0026lt;3g imbalance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison: 30mm vs. 25mm High Carbon Rims\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003e30mm High (this rim)\u003c\/th\u003e\n\u003cth\u003e25mm High\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e390g (superlight)\u003c\/td\u003e\n\u003ctd\u003eTypically 380-410g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrength\u003c\/td\u003e\n\u003ctd\u003eHigher lateral\/torsional stiffness\u003c\/td\u003e\n\u003ctd\u003eLower stiffness, more flex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdeal Use\u003c\/td\u003e\n\u003ctd\u003eAll-mountain, aggressive XC\u003c\/td\u003e\n\u003ctd\u003eXC, less technical terrain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is a 34mm inner width rim suitable for 2.3\"–2.6\" MTB tires?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the 34mm width provides optimal support for 2.3–2.6 inch mountain bike tires, balancing sidewall support and volume.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the advantage of a superlight 390g rim?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Lower rotational weight improves acceleration and climbing, supporting endurance and race applications, while the structural design maintains stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e How does hookless rim design affect tubeless setup?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Hookless rims facilitate tubeless tire installation, reduce pinch flats, and are compatible with most modern MTB tires when appropriate pressure limits are observed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Certified\/tested for quality?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e All Bola rims undergo stringent quality control and destructive testing according to ISO4210-7:2014(E) standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Warranty details?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e 3-year limited warranty against manufacturing defects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuyer Guidance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for brands, teams, and cyclists seeking customizable, lightweight, high-performance carbon rims for XC racing, trail, and technical all-mountain terrain.\u003c\/li\u003e\n\u003cli\u003eNot recommended for gravity\/enduro disciplines requiring heavier rim profiles (\u0026gt;500g).\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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