{"product_id":"bola-700c-34mm-carbon-gravel-rims-35mm-40mm-wave-shape","title":"Ultralight Carbon Gravel Bike Rims 700c | 34mm Wide, 25mm Inner U-Shape | 35mm \u0026 40mm Heights | Disc Brake | Bola","description":"\u003cp\u003eTake a wheelset that balances race-day lightness with durable, tubeless-ready stability and you get Bola's 700c carbon gravel rims. Built for mixed-surface riding, endurance days and competitive gravel events, these rims pair a 34mm outer width and 25mm inner U-shape with distinct weight classes so you can prioritise durability, speed, or minimum rotational mass.\u003c\/p\u003e\n\u003ch2\u003eUltralight Carbon Gravel Bike Rims 700c - Designed for gravel racing, endurance and mixed-surface riding\u003c\/h2\u003e\n\u003cp\u003eThe U-shape 34mm outer \/ 25mm inner profile is engineered to stabilise wide tubeless tyres from roughly 29c to 44c, improving tyre volume and bead retention on rough terrain.\u003c\/p\u003e\n\u003cp\u003eRiders experience reduced rolling resistance and predictable cornering when tyre volume is supported by a consistent internal channel width, and the three weight classes let teams and individuals choose the right trade-off between structural reserve and weight savings.\u003c\/p\u003e\n\u003ch3\u003eWhy it fits your routine\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeless-ready U-shape:\u003c\/strong\u003e 25mm internal width supports wider gravel tyre volumes and reliable tubeless seating for 29c–44c tyre ranges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear weight options:\u003c\/strong\u003e Choose Normal (460±15g), Superlight (410±10g), or Ultralight (360±10g) per rim to match training, racing, or weight-optimised builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc-brake specific:\u003c\/strong\u003e Engineered for disc braking systems to ensure consistent braking performance and compatibility with modern gravel bikes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability metrics:\u003c\/strong\u003e Forward compressive strength \u0026gt;300kg, lateral torsion \u0026gt;50kg, and spoke hole tension \u0026gt;280kg for dependable structural performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision tolerances:\u003c\/strong\u003e Dynamic equilibrium \u0026lt;3g imbalance, flatness \u0026lt;0.15mm, roundness \u0026lt;0.3mm to simplify wheel building and maintain ride quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization \u0026amp; OEM support:\u003c\/strong\u003e Assembly, valve and spoke hole diameters, nipple angles and branding options available for small and medium brands; three-year warranty on production runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRiding weight limit:\u003c\/strong\u003e Rated for riders up to 110kg when used within specified tyre and terrain recommendations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTechnical details include a 34mm outer width, ERD 539mm, max tyre pressure up to 100 psi, standard valve hole 6.5mm (customisable) and spoke hole 4.5mm (customisable). The U-profile preserves a consistent bead-seat channel across the rim, reducing tyre deformation under cornering loads compared with similarly sized V-shape rims and improving tubeless reliability on rough surfaces.\u003c\/p\u003e\n\u003cp\u003eWeight-class guidance: Normal for training and heavier riders, Superlight for race-day gravel or cyclocross, and Ultralight for competitive, weight-optimised builds where the rider and terrain allow reduced mass while keeping structural tolerances within rated limits.\u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ Standard","offer_id":48134082167038,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Superlight","offer_id":48134082199806,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Ultralight","offer_id":48134082232574,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Standard","offer_id":48134082265342,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Superlight","offer_id":48134082298110,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Ultralight","offer_id":48134082330878,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Standard","offer_id":48134082363646,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Superlight","offer_id":48134082396414,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Ultralight","offer_id":48134082429182,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Standard","offer_id":48134082461950,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Superlight","offer_id":48134082494718,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Ultralight","offer_id":48134082527486,"sku":null,"price":330.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/wave_rimset.png?v=1780298383","url":"https:\/\/bolacarbon.com\/fr\/products\/bola-700c-34mm-carbon-gravel-rims-35mm-40mm-wave-shape","provider":"Bola Carbon Wheelset ","version":"1.0","type":"link"}