{"product_id":"bola-700c-45mm-carbon-road-rim-34mm-wide-28mm-inner-width-tubeless-ready","title":"Bola 700c 45mm Carbon Road Rim – 34mm Outer, 28mm Inner, Tubeless Ready","description":"\u003cp\u003eThe Bola 700c 45mm Carbon Road Rim is engineered for road and gravel riders demanding balanced aerodynamics, weight, and tire versatility. A 34mm outer and 28mm inner width supports 25–32mm tubeless tire systems, providing stability on paved and mixed-surface conditions. Verified weights (370–445g) are available across three build grades, with absolute tolerances for flatness (\u0026lt;0.15mm) and roundness, ensuring consistent wheel assembly for OEMs and teams. Fully compatible with disc-brake builds and custom spoke drilling.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRim Diameter:\u003c\/strong\u003e 700c (ISO 622mm BSD)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfile Height:\u003c\/strong\u003e 45mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Width:\u003c\/strong\u003e 34mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInner Width:\u003c\/strong\u003e 28mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEffective Rim Diameter (ERD):\u003c\/strong\u003e 548mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRim Shape:\u003c\/strong\u003e Hooked U-profile, tubeless ready\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve Hole:\u003c\/strong\u003e 6.5mm (customizable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpoke Hole:\u003c\/strong\u003e 4.5mm (customizable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-modulus carbon fiber, UV-cure resin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 370–445g verified by build grade\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompliance:\u003c\/strong\u003e Forward compression \u0026gt;300kg, lateral torsion \u0026gt;50kg, spoke tension \u0026gt;280kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3 years from purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePerformance \u0026amp; Use\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eOptimized for 25–32mm road and gravel tires, allowing riders improved comfort and efficiency across endurance, racing, and urban segments.\u003c\/li\u003e\n  \u003cli\u003e28mm internal width accommodates modern tire casings for stability at lower pressures with tubeless setup.\u003c\/li\u003e\n  \u003cli\u003eDisc-brake ready; ideal for competition, training, and performance-oriented OEM partnerships.\u003c\/li\u003e\n  \u003cli\u003eTight manufacturing tolerances (\u0026lt;0.15mm flatness) facilitate trouble-free building and longevity.\u003c\/li\u003e\n  \u003cli\u003eDynamic balance \u0026lt;3g ensures smooth high-speed rotation, verified against industry norms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eComparison Table\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eBola 45mm\u003c\/th\u003e\n\u003cth\u003eTypical 45mm Carbon\u003c\/th\u003e\n\u003cth\u003e700c Aluminum Rim\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfile Height\u003c\/td\u003e\n\u003ctd\u003e45mm\u003c\/td\u003e\n\u003ctd\u003e45mm\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e34mm\u003c\/td\u003e\n\u003ctd\u003e30–32mm\u003c\/td\u003e\n\u003ctd\u003e20–25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e28mm\u003c\/td\u003e\n\u003ctd\u003e22–25mm\u003c\/td\u003e\n\u003ctd\u003e17–19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e370–445g\u003c\/td\u003e\n\u003ctd\u003e390–470g\u003c\/td\u003e\n\u003ctd\u003e530–600g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc Brake Ready\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eVaries\u003c\/td\u003e\n\u003ctd\u003eVaries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eIs a 45mm deep, 28mm inner width carbon rim good for both road and gravel riding?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes, the 45mm depth balances aerodynamic efficiency on pavement with crosswind stability, while the 28mm inner width safely supports both road (25–32mm) and gravel tires, ensuring versatility for mixed-terrain use.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eHow does a 700c 45mm carbon rim compare to an aluminum rim for endurance cycling?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eCompared to aluminum, the Bola carbon rim offers a lighter (370–445g vs. 530–600g) and stiffer platform. While carbon costs more, it reduces fatigue by decreasing rotational mass and increases speed with its aerodynamic profile.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eWhat tire sizes work best with a 34mm wide, tubeless ready carbon road rim?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003e25–32mm tires (road\/gravel) are optimal. The wide internal channel improves tire stability and air volume, favoring performance at lower pressures, especially in tubeless configurations.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eAre lightweight 45mm carbon rims strong enough for racing and daily training?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes, each Bola rim undergoes impact and spoke hole tension testing (certified \u0026gt;300kg and \u0026gt;280kg), exceeding typical UCI durability standards for both race and training applications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eWhat's the benefit of choosing a wider 28mm inner width rim for my road bike?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eThe 28mm inner width allows a tire to maintain its shape and volume for better grip, reduced rolling resistance, and improved comfort—especially useful for wider modern tires and gravel setups.\u003c\/p\u003e\u003c\/details\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Bola 700c 45mm Carbon Road Rim – 34mm Wide, 28mm Inner Width,Tubeless Ready\",\n  \"description\": \"The Bola 700c 45mm Carbon Road Rim is engineered for road and gravel riders demanding balanced aerodynamics, weight, and tire versatility. A 34mm outer and 28mm inner width supports 25–32mm tubeless tire systems, providing stability on paved and mixed-surface conditions. Verified weights (370–445g) are available across three build grades, with absolute tolerances for flatness (\u0026lt;0.15mm) and roundness, ensuring consistent wheel assembly for OEMs and teams. Fully compatible with disc-brake builds and custom spoke drilling. Key Specifications Rim Diameter: 700c (ISO 622mm BSD) Profile Height: 45mm Outer Width: 34mm Inner Width: 28mm Effective Rim Diameter (ERD): 548mm Rim Shape: Hooked U-profile, tubeless ready Valve Hole: 6.5mm (customizable) Spoke Hole: 4.5mm (customizable) Material: High-modulus carbon fiber, UV-cure resin Weight: 370–445g verified by build grade Compliance: Forward compression \u0026gt;300kg, lateral torsion \u0026gt;50kg, spoke tension \u0026gt;280kg Warranty: 3 years from purchase Performance \u0026 Use Optimized for 25–32mm road and gravel tires, allowing riders improved comfort and efficiency across endurance, racing, and urban segments. 28mm internal width accommodates modern tire casings for stability at lower pressures with tubeless setup. Disc-brake ready; ideal for competition, training, and performance-oriented OEM partnerships. Tight manufacturing tolerances (\u0026lt;0.15mm flatness) facilitate trouble-free building and longevity. Dynamic balance \u0026lt;3g ensures smooth high-speed rotation, verified against industry norms. Comparison Table Attribute Bola 45mm Typical 45mm Carbon 700c Aluminum Rim Profile Height 45mm 45mm 30mm Outer Width 34mm 30–32mm 20–25mm Inner Width 28mm 22–25mm 17–19mm Weight 370–445g 390–470g 530–600g Disc Brake Ready Yes Varies Varies Frequently Asked Questions Is a 45mm deep, 28mm inner width carbon rim good for both road and gravel riding? Yes, the 45mm depth balances aerodynamic efficiency on pavement with crosswind stability, while the 28mm inner width safely supports both road (25–32mm) and gravel tires, ensuring versatility for mixed-terrain use. How does a 700c 45mm carbon rim compare to an aluminum rim for endurance cycling? Compared to aluminum, the Bola carbon rim offers a lighter (370–445g vs. 530–600g) and stiffer platform. While carbon costs more, it reduces fatigue by decreasing rotational mass and increases speed with its aerodynamic profile. What tire sizes work best with a 34mm wide, tubeless ready carbon road rim? 25–32mm tires (road\/gravel) are optimal. The wide internal channel improves tire stability and air volume, favoring performance at lower pressures, especially in tubeless configurations. Are lightweight 45mm carbon rims strong enough for racing and daily training? Yes, each Bola rim undergoes impact and spoke hole tension testing (certified \u0026gt;300kg and \u0026gt;280kg), exceeding typical UCI durability standards for both race and training applications. What's the benefit of choosing a wider 28mm inner width rim for my road bike? 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