{"product_id":"bola-650b-hookless-carbon-mtb-rim","title":"Bola 650B Hookless Carbon MTB Rim — 27.5\" Asymmetric XC, 25mm Internal","description":"\u003cp\u003eWhen the trail narrows and every gram and tire contact matters, this 27.5\" hookless carbon rim is built to translate power into forward motion and confidence. Engineered for cross-country and aggressive trail riding, it supports modern 2.1–2.4\" tubeless tires and balances low weight with structural durability for sustained race pace and extended off-road days. Riders who demand responsive acceleration and predictable handling will notice the refined footprint and asymmetric strength under load.\u003c\/p\u003e\n\u003ch2\u003eBola 650B Hookless Carbon MTB Rim - Designed for cross-country and trail riding\u003c\/h2\u003e\n\u003cp\u003eThe rim's combination of a 25 mm internal width and a U-shaped asymmetric profile produces a wider, more supportive tire contact patch that improves traction and allows safe, lower pressures for comfort and grip. The hookless tubeless profile reduces pinch-flat risk and simplifies tubeless setup, while Toray unidirectional and woven carbon fiber construction delivers stiffness and responsiveness that benefit both climbs and technical sections.\u003c\/p\u003e\n\u003ch3\u003eWhy it fits your routine\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized for XC and trail tires:\u003c\/strong\u003e 25 mm inner width supports 2.1–2.4\" tires at typical pressures (45–65 psi) to balance grip and rolling efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight options:\u003c\/strong\u003e Available in superlight (315 ± 10 g) or standard (380 ± 15 g) weights to match priorities between racing performance and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsymmetric strength:\u003c\/strong\u003e Offset rim profile improves spoke angle and balances tension between drive and non-drive sides for increased lateral rigidity and longer wheel life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHookless tubeless safety:\u003c\/strong\u003e Hookless rim bed designed to secure tubeless beads, reduce pinch flats, and enable consistent sealing when used with ETRTO-compliant tires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-tension reliability:\u003c\/strong\u003e Tested to \u0026gt;280 kgf spoke tension and compatible with 28 or 32 spoke builds to suit stiffness and resilience preferences.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry compliance:\u003c\/strong\u003e ETRTO 2023 and ISO 4210-7 certification provide verified rim\/tire compatibility and safety guidance for tubeless setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve and hub compatibility:\u003c\/strong\u003e Presta (French) tubeless valve compatible; designed for 27.5\"\/650B wheel systems and works with Boost and non-Boost hub standards when laced accordingly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterials and warranty:\u003c\/strong\u003e Constructed from Toray unidirectional and woven carbon fiber and backed by a 3-year warranty, with OEM customization available for brands and teams.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTechnical highlights include a 30 mm rim height, 30 mm outer width, U-shaped asymmetric profile, and spoke hole options of 28 or 32. The rim's verified specifications—weight variants, 25 mm internal width, hookless tubeless beds, and ETRTO\/ISO certifications—make it a reliable platform for riders seeking a modern 27.5\" performance wheel capable of handling race speeds and varied trail conditions.\u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ 28\/28 \/ Normal","offer_id":48092926640382,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 28\/28 \/ Super Light","offer_id":48092926673150,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Normal","offer_id":48092926705918,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Super Light","offer_id":48092926738686,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Normal","offer_id":48092926771454,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Super Light","offer_id":48092926804222,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Normal","offer_id":48092926836990,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Super Light","offer_id":48092926869758,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Normal","offer_id":48092926902526,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Super Light","offer_id":48092926935294,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Normal","offer_id":48092926968062,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Super Light","offer_id":48092927000830,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Normal","offer_id":48092927033598,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Super Light","offer_id":48092927066366,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Normal","offer_id":48092927099134,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Super Light","offer_id":48092927131902,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Normal","offer_id":48092927164670,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Super Light","offer_id":48092927197438,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Normal","offer_id":48092927230206,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Super Light","offer_id":48092927262974,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Normal","offer_id":48092927295742,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Super Light","offer_id":48092927328510,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Normal","offer_id":48092927361278,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Super Light","offer_id":48092927394046,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/mtb_rims.png?v=1780298344","url":"https:\/\/bolacarbon.com\/ja\/products\/bola-650b-hookless-carbon-mtb-rim","provider":"Bola Carbon Wheelset ","version":"1.0","type":"link"}