{"product_id":"40mm-carbon-road-rim-36mm-outer-30mm-inner-width-tubeless-ready-700c-ultralight-365-445g","title":"40mm Carbon Road Rim – 36mm Outer \/ 30mm Inner Width, Tubeless Ready, 700C, Ultralight (365–445g)","description":"\u003ch2 id=\"tinymce_scroll_sign\"\u003eExplore the Benefits of the 40mm Carbon Road Rim Tubeless\u003c\/h2\u003e\n\u003cp\u003eA high-performance, tubeless-ready carbon road rim engineered for competitive racing, endurance cycling, and custom wheelset builds. The 30mm inner width accommodates tire widths from 25c to 50c, making it equally capable on fast road courses and mixed-surface endurance routes. Available in four verified weight tiers—from a standard 445g to an extreme-light 365g—so teams and brands can match rim specification precisely to rider demands.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\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\u003eUV Shape (hooked tubeless-compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Height\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e36mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e30mm\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\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction (Front)\u003c\/td\u003e\n\u003ctd\u003e7°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction (Rear)\u003c\/td\u003e\n\u003ctd\u003e5° \u0026amp; 7° (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin \/ Max Tire Pressure\u003c\/td\u003e\n\u003ctd\u003e100 \/ 125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e120 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWeight Tiers\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eScheme\u003c\/th\u003e\n\u003cth\u003eWeight per Rim\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e445 ± 15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuperlight\u003c\/td\u003e\n\u003ctd\u003e410 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltralight\u003c\/td\u003e\n\u003ctd\u003e385 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtreme Light\u003c\/td\u003e\n\u003ctd\u003e365 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eNote: Lighter weight tiers use reduced laminate schedules. For riders above 90 kg or high-torque sprint applications, the Standard or Superlight tier is recommended for optimal fatigue resistance.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eStructural Performance Data\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion Resistance:\u003c\/strong\u003e \u0026gt;50 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium:\u003c\/strong\u003e \u0026lt;3g imbalance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlatness Tolerance:\u003c\/strong\u003e \u0026lt;0.15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoundness Tolerance:\u003c\/strong\u003e \u0026lt;0.3mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility \u0026amp; Customization\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTire Compatibility:\u003c\/strong\u003e Tubeless and clincher tires, 25c–50c recommended range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Compatibility:\u003c\/strong\u003e Fits standard 700C road, endurance, and gravel frames with minimum 40mm rim clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHook Type:\u003c\/strong\u003e Hooked UV profile — compatible with standard road tubeless tires (not hookless-only tires)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Options:\u003c\/strong\u003e Assembly hole, valve hole, and spoke hole diameters available in custom sizes on request\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom Branding:\u003c\/strong\u003e OEM\/private label available for cycling brands and professional teams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a 30mm inner width carbon rim suitable for endurance road and gravel cycling?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. A 30mm internal width supports tire widths from 28c to 45c at optimal inflation volume, reducing rolling resistance and improving compliance on rough surfaces — well-suited to endurance road and light gravel use.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAre 36mm wide carbon rims compatible with standard road bike frames?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eMost modern road and endurance frames with 40mm+ rim clearance accommodate a 36mm outer-width rim without contact. Always verify your frame's stated maximum tire\/rim clearance before ordering.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the weight of an ultralight carbon road rim at this spec?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe Ultralight tier of this rim weighs 385 ± 10g per rim. The Extreme Light option reaches 365 ± 10g. Both are achieved through selective carbon layup reduction; the Standard 445g tier is recommended for heavier riders or frequent training use.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat makes this rim suitable for tubeless setup?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe UV hooked bead profile seals tubeless tires securely within the 100–125 psi pressure range. The 6.5mm valve hole accommodates standard tubeless valves, and the rim bed geometry supports tubeless tape installation.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan I order custom hole diameters or nipple angles?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Assembly hole, valve hole, and spoke hole diameters are customizable. Nipple direction options beyond the standard 7° front \/ 5°–7° rear are available on request for OEM and team orders.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eLightweight and Durable Design\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe 40mm carbon road rim tubeless combines an ultralight frame weighing between 365 and 445 grams with impressive durability, designed to enhance your cycling experience. Its advanced carbon construction offers remarkable strength while maintaining the featherlight weight crucial for competitive and recreational cyclists. The balance of a 36mm outer width and 30mm inner width provides optimal profile for speed and control on the road, allowing riders to accelerate efficiently without sacrificing stability during long rides or aggressive cornering.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTubeless Ready for Enhanced Performance\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDesigned specifically as a tubeless ready rim, this 40mm carbon road rim tubeless eliminates the need for traditional inner tubes, reducing rolling resistance and minimizing the risk of punctures. This tubeless compatibility not only results in a smoother ride but also allows cyclists to run lower tire pressures, increasing comfort and traction on various road surfaces. The rim’s precision engineering ensures an airtight seal, making setup straightforward and maintenance hassle-free, ideal for riders who demand reliability during endurance rides or races.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003ePerfect Fit for 700C Road Bikes\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOptimized for 700C road bike configurations, this 40mm carbon road rim tubeless strikes the right balance between width and aerodynamic efficiency. The rim’s dimensions are compatible with a wide range of tire sizes, enabling cyclists to customize their wheel setup based on riding conditions or personal preference. Its wide rim profile supports larger volume tires, improving grip and shock absorption without adding unnecessary drag. Whether upgrading existing wheels or building a new set, this rim delivers exceptional performance tailored to road cycling needs.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ 20\/20 \/ Standard","offer_id":48134098977022,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 20\/20 \/ Superlight","offer_id":48134099009790,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 20\/20 \/ Ultralight","offer_id":48134099042558,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 20\/20 \/ Extremelight","offer_id":48134099075326,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 24\/24 \/ Standard","offer_id":48134099108094,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 24\/24 \/ Superlight","offer_id":48134099140862,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 24\/24 \/ Ultralight","offer_id":48134099173630,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 24\/24 \/ Extremelight","offer_id":48134099206398,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Standard","offer_id":48134099239166,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Superlight","offer_id":48134099271934,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Ultralight","offer_id":48134099304702,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Extremelight","offer_id":48134099337470,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 20\/20 \/ Standard","offer_id":48134099370238,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 20\/20 \/ Superlight","offer_id":48134099403006,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 20\/20 \/ Ultralight","offer_id":48134099435774,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 20\/20 \/ Extremelight","offer_id":48134099468542,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 24\/24 \/ Standard","offer_id":48134099501310,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 24\/24 \/ Superlight","offer_id":48134099534078,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 24\/24 \/ Ultralight","offer_id":48134099566846,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 24\/24 \/ Extremelight","offer_id":48134099599614,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Standard","offer_id":48134099632382,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Superlight","offer_id":48134099665150,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Ultralight","offer_id":48134099697918,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Extremelight","offer_id":48134099730686,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 20\/20 \/ Standard","offer_id":48134099763454,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 20\/20 \/ Superlight","offer_id":48134099796222,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 20\/20 \/ Ultralight","offer_id":48134099828990,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 20\/20 \/ Extremelight","offer_id":48134099861758,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 24\/24 \/ Standard","offer_id":48134099894526,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 24\/24 \/ Superlight","offer_id":48134099927294,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 24\/24 \/ Ultralight","offer_id":48134099960062,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 24\/24 \/ Extremelight","offer_id":48134099992830,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Standard","offer_id":48134100025598,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Superlight","offer_id":48134100058366,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Ultralight","offer_id":48134100091134,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Extremelight","offer_id":48134100123902,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 20\/20 \/ Standard","offer_id":48134100156670,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 20\/20 \/ Superlight","offer_id":48134100189438,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 20\/20 \/ Ultralight","offer_id":48134100222206,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 20\/20 \/ Extremelight","offer_id":48134100254974,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 24\/24 \/ Standard","offer_id":48134100287742,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 24\/24 \/ Superlight","offer_id":48134100320510,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 24\/24 \/ Ultralight","offer_id":48134100353278,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 24\/24 \/ Extremelight","offer_id":48134100386046,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Standard","offer_id":48134100418814,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Superlight","offer_id":48134100451582,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Ultralight","offer_id":48134100484350,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Extremelight","offer_id":48134100517118,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/bola_700c_carbon_rims_52fb35c9-8605-4bde-abe7-5c32d4ae7e8e.png?v=1780298382","url":"https:\/\/bolacarbon.com\/el\/products\/40mm-carbon-road-rim-36mm-outer-30mm-inner-width-tubeless-ready-700c-ultralight-365-445g","provider":"Bola Carbon Wheelset ","version":"1.0","type":"link"}