{"product_id":"bola-27-5-asymmetric-hookless-carbon-mtb-rim-23mm","title":"Asymmetric Hookless Tubeless Carbon MTB Rim 27.5\" | 23mm Inner Width | 23mm Profile | XC \u0026 All Mountain | Bola","description":"\u003ch2\u003eBola 27.5\" Asymmetric Hookless Tubeless Carbon MTB Rim — 23mm Profile, 23mm Inner Width\u003c\/h2\u003e\n\u003cp\u003eThe Bola 27.5\" asymmetric carbon rim delivers a balance of low weight and structural rigidity optimized for XC and all-mountain riding. At 285–345g per rim (depending on build), it suits riders up to 100kg who demand precise handling without unnecessary rotational mass. The 23mm inner width accommodates 2.2\"–2.5\" tubeless tires within ETRTO-recommended fitment ranges for hookless rims.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\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 Diameter\u003c\/td\u003e\n\u003ctd\u003e27.5\" (584mm BSD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile (Height)\u003c\/td\u003e\n\u003ctd\u003e23mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e28mm outer \/ 23mm inner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e554mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Standard)\u003c\/td\u003e\n\u003ctd\u003e345 ± 10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Superlight)\u003c\/td\u003e\n\u003ctd\u003e285 ± 10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-shape (hookless tubeless)\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\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction\u003c\/td\u003e\n\u003ctd\u003eLeft 5° \/ Right 7° (or custom)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire Pressure Range\u003c\/td\u003e\n\u003ctd\u003e45–65 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e100kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eStructural Testing Data\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward Compressive Strength:\u003c\/strong\u003e \u0026gt;300kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLateral Torsion Resistance:\u003c\/strong\u003e \u0026gt;50kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Hole Tension:\u003c\/strong\u003e \u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Equilibrium (Imbalance):\u003c\/strong\u003e \u0026lt;3g\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\u003eWhy Asymmetric Rim Design?\u003c\/h2\u003e\n\u003cp\u003eAsymmetric spoke drilling offsets the spoke bed toward the non-drive side, equalizing spoke tension between left and right spokes. This reduces the tension imbalance common in standard symmetric rims — particularly relevant on rear wheels where driveside dish significantly misaligns the hub flange geometry. The result is a more evenly stressed, laterally stiffer wheel with reduced risk of spoke fatigue over time.\u003c\/p\u003e\n\u003ch2\u003eHookless Tubeless: Use-Case Suitability\u003c\/h2\u003e\n\u003cp\u003eHookless rims are compatible exclusively with tubeless-ready tires marked as hookless-safe by their manufacturer. At a maximum pressure of 65 psi, this rim is well-suited to XC racing and trail\/all-mountain use where tires are typically run at 25–50 psi. \u003cem\u003eNote: hookless rims are not recommended for use with tubed tires or with tires not certified for hookless fitment.\u003c\/em\u003e Always verify tire compatibility before mounting.\u003c\/p\u003e\n\u003ch2\u003e23mm Inner Width: What Tire Widths Does It Support?\u003c\/h2\u003e\n\u003cp\u003eA 23mm inner width is optimized for 2.2\"–2.5\" MTB tires. Per ETRTO guidelines, this inner width produces a measured tire width approximately 4–6mm wider than the rim's inner dimension, giving optimal casing support and cornering stability for trail and XC disciplines. Riders requiring wider tire profiles (\u0026gt;2.6\") for enduro or downhill should consider a wider rim platform.\u003c\/p\u003e\n\u003ch2\u003eCustomization Options\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHole drilling diameter (spoke, valve, assembly)\u003c\/li\u003e\n\u003cli\u003eNipple offset angle\u003c\/li\u003e\n\u003cli\u003eSuperlight or standard layup (285g vs. 345g)\u003c\/li\u003e\n\u003cli\u003eCompatible with custom branding for OEM and team orders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eAre hookless carbon rims safe for aggressive trail riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, within the rated pressure range (45–65 psi) and with hookless-compatible tires. The tested forward compressive strength exceeds 300kg and spoke hole tension exceeds 280kg, making this rim structurally suitable for trail and all-mountain use. It is not rated for downhill or bike park applications.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs a 23mm inner width sufficient for all-mountain riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFor most all-mountain use, yes. A 23mm inner width pairs well with 2.3\"–2.4\" tires that are standard for trail and all-mountain builds. Riders seeking maximum volume for enduro terrain may prefer a 25–27mm inner width rim.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the advantage of asymmetric drilling on this rim?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eAsymmetric spoke bed placement equalizes spoke tension across both sides of the wheel. This improves lateral stiffness and reduces the risk of spoke fatigue — a measurable engineering benefit backed by wheel-building data, particularly on rear wheels with significant dish.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the weight difference between standard and superlight builds?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe standard layup weighs 345 ± 10g per rim; the superlight variant weighs 285 ± 10g per rim — a 60g per rim saving. For a wheelset, this equates to approximately 120g reduction in rotating mass, which is meaningful for XC racing.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan this rim be used for OEM or team orders?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Bola supports customized hole diameters, nipple angles, and branding for small-to-medium cycling brands and professional teams. Contact us directly for MOQ and lead time details.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ 28\/28 \/ Normal","offer_id":48092904358142,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 28\/28 \/ Super Light","offer_id":48092904390910,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Normal","offer_id":48092904423678,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Super Light","offer_id":48092904456446,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Normal","offer_id":48092904489214,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Super Light","offer_id":48092904521982,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Normal","offer_id":48092904554750,"sku":null,"price":290.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Super Light","offer_id":48092904587518,"sku":null,"price":300.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Normal","offer_id":48092904620286,"sku":null,"price":290.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Super Light","offer_id":48092904653054,"sku":null,"price":300.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Normal","offer_id":48092904685822,"sku":null,"price":290.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Super Light","offer_id":48092904718590,"sku":null,"price":300.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Normal","offer_id":48092904751358,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Super Light","offer_id":48092904784126,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Normal","offer_id":48092904816894,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Super Light","offer_id":48092904849662,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Normal","offer_id":48092904882430,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Super Light","offer_id":48092904915198,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Normal","offer_id":48092904947966,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Super Light","offer_id":48092904980734,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Normal","offer_id":48092905013502,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Super Light","offer_id":48092905046270,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Normal","offer_id":48092905079038,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Super Light","offer_id":48092905111806,"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\/es\/products\/bola-27-5-asymmetric-hookless-carbon-mtb-rim-23mm","provider":"Bola Carbon Wheelset ","version":"1.0","type":"link"}