{"product_id":"700c-tubeless-carbon-road-rim-40mm-24-25mm-inner-hook-hookless-375-430g","title":"700c Tubeless Carbon Road Rim 40mm | 24\/25mm Inner | Hook\/Hookless | 375–430g","description":"\u003ch2\u003e700c Tubeless Carbon Road Rim – 40mm Height, 24\/25mm Inner Width\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQuick Answer:\u003c\/strong\u003e Engineered for competitive climbing, endurance road cycling, and high-performance racing, this 700c carbon rim features a 40mm deep V-profile, selectable 24mm or 25mm internal width, and choice of hookless or hooked bead. Weights verified: 430g (standard), 395g (superlight), 375g (ultralight). Supports modern tubeless and clincher systems. Maximum rider weight: 120kg. Complies with ETRTO 2021 for hookless. Backed by 3-year manufacturer warranty.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRim Size\u003c\/td\u003e\n\u003ctd\u003e700C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003eV Shape, 40mm deep\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e24mm or 25mm (select)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eETRTO 2021 (hookless option)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e375–430g (verified tiers)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e558mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eStrength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300kg compressive, \u0026gt;50kg lateral\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;280kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRecommended Tire Width\u003c\/td\u003e\n\u003ctd\u003e25–28mm (24mm inner), 25–32mm (25mm inner)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eUnidirectional carbon fiber with epoxy resin\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eComparison: 24mm vs 25mm Inner Width\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e24mm\u003c\/strong\u003e: Optimized for 25–28mm tires, improved aerodynamics for road racing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e25mm\u003c\/strong\u003e: Supports up to 32mm tires, offering better volume for endurance and rougher road comfort.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse Cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompetitive Road Climbers\u003c\/strong\u003e: Ultralight 375g option minimizes inertia.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEndurance Riders\u003c\/strong\u003e: 25mm width supports wider tires for comfort.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrands and Builders\u003c\/strong\u003e: Multiple weights and width options for custom wheelsets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdl\u003e\n  \u003cdt\u003eWhat tubeless carbon rims are best for road cycling at 40mm and 25mm width?\u003c\/dt\u003e\n  \u003cdd\u003eThis rim meets ETRTO standards, verified at 375–430g, and provides performance for racing and long-distance rides.\u003c\/dd\u003e\n  \u003cdt\u003eShould I choose hookless or hooked for my road tubeless setup?\u003c\/dt\u003e\n  \u003cdd\u003eHookless supports modern tubeless, up to 72 psi with compliant tires. Hooked offers broader tire compatibility with traditional road clinchers.\u003c\/dd\u003e\n  \u003cdt\u003eIs sub-400g rim weight suitable for racing?\u003c\/dt\u003e\n  \u003cdd\u003e375–395g tiers minimize rotational weight for rapid acceleration, preferred by climbers and racers; consider tire fit for your use case.\u003c\/dd\u003e\n  \u003cdt\u003eWhat’s the advantage of 24mm vs 25mm internal width?\u003c\/dt\u003e\n  \u003cdd\u003e25mm allows wider tires for comfort and stability on rougher roads or ultradistance rides; 24mm prioritizes aero efficiency for road racing tires.\u003c\/dd\u003e\n  \u003cdt\u003eWhat tire sizes are recommended?\u003c\/dt\u003e\n  \u003cdd\u003e24mm inner: 25–28mm tires; 25mm inner: 25–32mm tires (see ETRTO guidelines).\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c Tubeless Carbon Road Rim 40mm – 24mm or 25mm Inner Width, Hook or Hookless, 375–430g\",\n  \"description\": \"700c Tubeless Carbon Road Rim – 40mm Height, 24\/25mm Inner Width Quick Answer: Engineered for competitive climbing, endurance road cycling, and high-performance racing, this 700c carbon rim features a 40mm deep V-profile, selectable 24mm or 25mm internal width, and choice of hookless or hooked bead. Weights verified: 430g (standard), 395g (superlight), 375g (ultralight). Supports modern tubeless and clincher systems. Maximum rider weight: 120kg. Complies with ETRTO 2021 for hookless. Backed by 3-year manufacturer warranty. Technical Specifications Parameter Value Rim Size 700C Rim Profile V Shape, 40mm deep Inner Width 24mm or 25mm (select) Outer Width 30mm Compliance ETRTO 2021 (hookless option) Weight 375–430g (verified tiers) ERD 558mm Strength \u0026gt;300kg compressive, \u0026gt;50kg lateral Spoke Hole Tension \u0026gt;280kg Recommended Tire Width 25–28mm (24mm inner), 25–32mm (25mm inner) Material Unidirectional carbon fiber with epoxy resin Country of Origin China Comparison: 24mm vs 25mm Inner Width 24mm : Optimized for 25–28mm tires, improved aerodynamics for road racing. 25mm : Supports up to 32mm tires, offering better volume for endurance and rougher road comfort. Use Cases Competitive Road Climbers : Ultralight 375g option minimizes inertia. Endurance Riders : 25mm width supports wider tires for comfort. Brands and Builders : Multiple weights and width options for custom wheelsets. Frequently Asked Questions What tubeless carbon rims are best for road cycling at 40mm and 25mm width? This rim meets ETRTO standards, verified at 375–430g, and provides performance for racing and long-distance rides. Should I choose hookless or hooked for my road tubeless setup? Hookless supports modern tubeless, up to 72 psi with compliant tires. Hooked offers broader tire compatibility with traditional road clinchers. Is sub-400g rim weight suitable for racing? 375–395g tiers minimize rotational weight for rapid acceleration, preferred by climbers and racers; consider tire fit for your use case. What’s the advantage of 24mm vs 25mm internal width? 25mm allows wider tires for comfort and stability on rougher roads or ultradistance rides; 24mm prioritizes aero efficiency for road racing tires. 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