{"product_id":"29-asymmetric-hookless-tubeless-carbon-mtb-rim-23mm-profile-32mm-inner-width-xc-am-325-385g","title":"29\" Asymmetric Hookless Tubeless Carbon MTB Rim | 23mm Profile | 32mm Inner Width | XC \u0026 AM | 325–385g","description":"\u003ch2\u003e29\" Asymmetric Hookless Tubeless Carbon MTB Rim — 23mm Profile, 32mm Inner Width\u003c\/h2\u003e\u003cp\u003eThe Bola 29er asymmetric carbon MTB rim is engineered for cross-country (XC) and all-mountain (AM) riders who need a tubeless-ready hookless rim that is measurably lighter and structurally more balanced than conventional symmetrical designs. Available in two weight variants — \u003cstrong\u003eStandard (385 ± 15 g)\u003c\/strong\u003e and \u003cstrong\u003eSuperlight (325 ± 10 g)\u003c\/strong\u003e — it delivers competitive weight savings without sacrificing structural integrity.\u003c\/p\u003e\u003ch2\u003eWhy Asymmetric? The Performance Case\u003c\/h2\u003e\u003cp\u003eOn a standard rear wheel, spoke tension is unequal between the drive and non-drive sides due to hub flange offset. An asymmetric rim offsets the spoke bed laterally to reduce this tension differential, producing a more evenly tensioned, laterally stiffer, and longer-lasting wheel build. The result is measurably improved power transfer and reduced spoke fatigue — particularly relevant for AM riders running wide tires at lower pressures.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Size\u003c\/td\u003e\n\u003ctd\u003e29\" (29er)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile Height\u003c\/td\u003e\n\u003ctd\u003e23 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e32 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e38 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD (Effective Rim Diameter)\u003c\/td\u003e\n\u003ctd\u003e598 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Standard\u003c\/td\u003e\n\u003ctd\u003e385 ± 15 g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight — Superlight\u003c\/td\u003e\n\u003ctd\u003e325 ± 10 g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-shape (hookless)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTubeless Compatible\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Compressive Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 300 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Torsion Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 280 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Equilibrium (imbalance)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 3 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5 mm (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Direction\u003c\/td\u003e\n\u003ctd\u003eLeft 5° \/ Right 7° (customizable)\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\u003e100 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRiding Discipline Fit\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eXC Racing:\u003c\/strong\u003e The Superlight variant (325 ± 10 g) reduces rotational mass, improving acceleration and climbing efficiency on hardpack and mixed-terrain race courses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-Mountain (AM):\u003c\/strong\u003e The 32 mm inner width optimally supports 2.3\"–2.5\" tires at 45–65 psi, improving cornering stability and traction on technical descents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnduro (moderate):\u003c\/strong\u003e The \u0026gt; 300 kg compressive strength and \u0026lt; 0.15 mm flatness tolerance offer durability for riders up to 100 kg on mixed-terrain terrain.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHookless Tubeless: Tradeoffs to Know\u003c\/h2\u003e\u003cp\u003eHookless rims offer a lighter and more uniform bead shelf compared to hooked designs, and are fully tubeless-compatible. However, they require tubeless-rated tires and must be operated within the specified 45–65 psi range. High-pressure tube setups are not recommended. All major tire brands (Maxxis, Schwalbe, Continental) offer 29er tubeless options compatible with a 32 mm inner width hookless rim.\u003c\/p\u003e\u003ch2\u003eCustomization Options\u003c\/h2\u003e\u003cp\u003eAs a direct manufacturer with over a decade of supply experience to European and North American cycling brands, Bola offers customizable hole diameters, nipple angles, spoke counts, and OEM\/private-label finishing. Contact us for minimum order quantities and lead times.\u003c\/p\u003e\u003ch2\u003eWarranty\u003c\/h2\u003e\u003cp\u003eThree-year manufacturer warranty covering structural defects under normal riding conditions.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Are hookless carbon rims safe for trail and all-mountain riding?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Yes, provided you use tubeless-rated tires and stay within the 45–65 psi range specified for this rim. Hookless bead shelves have been validated by major OEMs including Canyon, Trek, and Specialized on trail and AM builds. The \u0026gt; 300 kg compressive strength rating confirms structural suitability for off-road impact loads.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What tire width range works best with a 32 mm inner width?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: ETRTO guidelines recommend a tire width 1.8×–2.5× the inner rim width. For 32 mm inner width, optimal tire widths are 2.3\"–2.5\" (58–63 mm), though 2.1\"–2.6\" fitments are commonly used in XC and AM applications.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What is the weight difference between the Standard and Superlight variants?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: The Standard rim weighs 385 ± 15 g per rim; the Superlight version weighs 325 ± 10 g — a saving of approximately 60 g per rim (120 g per wheelset), which is meaningful for competitive XC racing.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Can I run tubes in a hookless rim?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: It is not recommended. Hookless rims are designed for tubeless-only use. Running inner tubes in a hookless bead profile can lead to bead unseating under pressure.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Is the asymmetric design only for rear wheels?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Asymmetric rims provide the greatest benefit on the rear wheel where drive-side spoke tension disparity is largest. Some builders use them on the front as well for consistency; both applications are structurally valid.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Asymmetric 29\\\" feather light MTB hookless carbon tubeless rims 23mm profile 32mm inner wide XC or AM Bola\",\n  \"description\": \"29\\\" Asymmetric Hookless Tubeless Carbon MTB Rim — 23mm Profile, 32mm Inner Width The Bola 29er asymmetric carbon MTB rim is engineered for cross-country (XC) and all-mountain (AM) riders who need a tubeless-ready hookless rim that is measurably lighter and structurally more balanced than conventional symmetrical designs. Available in two weight variants — Standard (385 ± 15 g) and Superlight (325 ± 10 g) — it delivers competitive weight savings without sacrificing structural integrity. Why Asymmetric? The Performance Case On a standard rear wheel, spoke tension is unequal between the drive and non-drive sides due to hub flange offset. An asymmetric rim offsets the spoke bed laterally to reduce this tension differential, producing a more evenly tensioned, laterally stiffer, and longer-lasting wheel build. The result is measurably improved power transfer and reduced spoke fatigue — particularly relevant for AM riders running wide tires at lower pressures. Key Specifications Specification Value Wheel Size 29\\\" (29er) Rim Profile Height 23 mm Inner Width 32 mm Outer Width 38 mm ERD (Effective Rim Diameter) 598 mm Weight — Standard 385 ± 15 g per rim Weight — Superlight 325 ± 10 g per rim Rim Shape U-shape (hookless) Tubeless Compatible Yes Forward Compressive Strength \u0026gt; 300 kg Lateral Torsion Resistance \u0026gt; 50 kg Spoke Hole Tension \u0026gt; 280 kg Dynamic Equilibrium (imbalance) \u0026lt; 3 g Flatness Tolerance \u0026lt; 0.15 mm Roundness Tolerance \u0026lt; 0.3 mm Spoke Hole Diameter 4.5 mm (customizable) Valve Hole Diameter 6.5 mm (customizable) Assembly Hole Diameter 7.5 mm (customizable) Nipple Direction Left 5° \/ Right 7° (customizable) Tire Pressure Range 45–65 psi Max Rider Weight 100 kg Riding Discipline Fit XC Racing: The Superlight variant (325 ± 10 g) reduces rotational mass, improving acceleration and climbing efficiency on hardpack and mixed-terrain race courses. All-Mountain (AM): The 32 mm inner width optimally supports 2.3\\\"–2.5\\\" tires at 45–65 psi, improving cornering stability and traction on technical descents. Enduro (moderate): The \u0026gt; 300 kg compressive strength and \u0026lt; 0.15 mm flatness tolerance offer durability for riders up to 100 kg on mixed-terrain terrain. Hookless Tubeless: Tradeoffs to Know Hookless rims offer a lighter and more uniform bead shelf compared to hooked designs, and are fully tubeless-compatible. However, they require tubeless-rated tires and must be operated within the specified 45–65 psi range. High-pressure tube setups are not recommended. All major tire brands (Maxxis, Schwalbe, Continental) offer 29er tubeless options compatible with a 32 mm inner width hookless rim. Customization Options As a direct manufacturer with over a decade of supply experience to European and North American cycling brands, Bola offers customizable hole diameters, nipple angles, spoke counts, and OEM\/private-label finishing. Contact us for minimum order quantities and lead times. Warranty Three-year manufacturer warranty covering structural defects under normal riding conditions. Frequently Asked Questions Q: Are hookless carbon rims safe for trail and all-mountain riding? A: Yes, provided you use tubeless-rated tires and stay within the 45–65 psi range specified for this rim. Hookless bead shelves have been validated by major OEMs including Canyon, Trek, and Specialized on trail and AM builds. The \u0026gt; 300 kg compressive strength rating confirms structural suitability for off-road impact loads. Q: What tire width range works best with a 32 mm inner width? A: ETRTO guidelines recommend a tire width 1.8×–2.5× the inner rim width. For 32 mm inner width, optimal tire widths are 2.3\\\"–2.5\\\" (58–63 mm), though 2.1\\\"–2.6\\\" fitments are commonly used in XC and AM applications. Q: What is the weight difference between the Standard and Superlight variants? A: The Standard rim weighs 385 ± 15 g per rim; the Superlight version weighs 325 ± 10 g — a saving of approximately 60 g per rim (120 g per wheelset), which is meaningful for competitive XC racing. Q: Can I run tubes in a hookless rim? A: It is not recommended. Hookless rims are designed for tubeless-only use. Running inner tubes in a hookless bead profile can lead to bead unseating under pressure. Q: Is the asymmetric design only for rear wheels? A: Asymmetric rims provide the greatest benefit on the rear wheel where drive-side spoke tension disparity is largest. Some builders use them on the front as well for consistency; both applications are structurally valid.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"Asymmetric\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/MTB38-C23-29.jpg?v=1714112588\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/mtb_3944d705-cdbd-434f-b143-2bb397cef1bb.png?v=1714112588\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/hookless_86658644-964a-488c-b3d5-cd05958509b5.jpg?v=1714112588\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/redbola_6a34cb76-3a9f-4c50-8f87-20fbb3263d2b.jpg?v=1714112588\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/whitebola_4a8476fa-f6c0-4642-a0af-4267f9f1291b.jpg?v=1714112588\",\n    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