{"product_id":"bola-650b-carbon-gravel-rim","title":"Bola 650B Asymmetric Carbon Gravel Rim, 30mm Deep, 24\/25mm Inner, Tubeless, 330–395g","description":"\u003cp\u003eWhen your ride mixes fast gravel sections, rough singletrack and long-distance efforts, wheel choice changes how the bike feels and performs. The Bola 650B asymmetric carbon gravel rim is built for riders and builders who want a lightweight, tubeless-ready foundation that balances acceleration, tire support and rim strength across varied terrain.\u003c\/p\u003e\n\u003ch2\u003eBola 650B Asymmetric Carbon Gravel Rim - Designed for lightweight, high-performance 650B builds\u003c\/h2\u003e\n\u003cp\u003eIt fits competitive and endurance gravel use with a 30mm depth and 24mm or 25mm inner width options that stabilize 38c–50c tires. Available in hooked or hookless bead shapes and produced with an asymmetric U-shaped profile, the rim is optimized for disc brake systems and tubeless setups.\u003c\/p\u003e\n\u003cp\u003eThe design focus is on ride quality under mixed conditions: a shallow 30mm rim depth keeps rotational weight low for snappy acceleration while the asymmetric layout improves spoke tension balance for greater wheel durability on rough surfaces.\u003c\/p\u003e\n\u003ch3\u003eWhy it fits your routine\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose-built 650B sizing:\u003c\/strong\u003e Designed for 27.5\" wheels to match modern gravel geometry and tire choices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized width options:\u003c\/strong\u003e 24mm or 25mm inner width supports a wide tire range (38c–50c) to balance comfort, traction and rolling resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight options:\u003c\/strong\u003e Choice of Ultralight (330g), Superlight (355g) or Normal (395g) per rim to tailor weight versus durability for racing or endurance riding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsymmetric U-shaped profile:\u003c\/strong\u003e Improves spoke tension distribution and wheel robustness where off-road impacts are common.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeless ready, hooked or hookless:\u003c\/strong\u003e Compatible with modern tubeless tires; choose hooked for broader tire compatibility or hookless for lower-pressure setups when compatible with your tires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc brake only:\u003c\/strong\u003e Built specifically for disc-equipped gravel bikes to concentrate material and stiffness where it matters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertified and warranted:\u003c\/strong\u003e Exceeds EN 14766 and ISO 4210-7 standards for impact and fatigue and includes a 3-year warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Rim Diameter (ERD):\u003c\/strong\u003e 540mm for predictable spoke length calculation in custom builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30mm outer width and 30mm depth:\u003c\/strong\u003e A shallow, stable profile that reduces aerodynamic penalties while maintaining tire support on rough terrain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSuitable for custom wheel builders, small brand OEMs or riders updating wheels for mixed-surface racing and endurance gravel events, the Bola 650B rim provides a focused balance of low rotating mass, compatible tire range and structural design features that prioritize real-world durability and tubeless performance.\u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ 28\/28 \/ Normal","offer_id":48093035004158,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 28\/28 \/ Super Light","offer_id":48093035036926,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Normal","offer_id":48093035069694,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Super Light","offer_id":48093035102462,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Normal","offer_id":48093035135230,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Super Light","offer_id":48093035167998,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Normal","offer_id":48093035200766,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Super Light","offer_id":48093035233534,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Normal","offer_id":48093035266302,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Super Light","offer_id":48093035299070,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Normal","offer_id":48093035331838,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Super Light","offer_id":48093035364606,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Normal","offer_id":48093035397374,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Super Light","offer_id":48093035430142,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Normal","offer_id":48093035462910,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Super Light","offer_id":48093035495678,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Normal","offer_id":48093035528446,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Super Light","offer_id":48093035561214,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Normal","offer_id":48093035593982,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Super Light","offer_id":48093035626750,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Normal","offer_id":48093035659518,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Super Light","offer_id":48093035692286,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Normal","offer_id":48093035725054,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Super Light","offer_id":48093035757822,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/650b_rims.jpg?v=1780298319","url":"https:\/\/bolacarbon.com\/fr\/products\/bola-650b-carbon-gravel-rim","provider":"Bola Carbon Wheelset ","version":"1.0","type":"link"}