{"product_id":"29er-asymmetric-carbon-mtb-rim-30mm-height-25mm-inner-width","title":"29er Asymmetric Carbon MTB Rim – 30mm Height, 25mm Inner Width","description":"\u003ch2\u003e29er Asymmetric Carbon MTB Rim – 30mm Height, 25mm Inner Width\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eLead Answer:\u003c\/strong\u003e This 29er carbon mountain bike rim features an asymmetric U-shape design with a 30mm profile and 25mm inner width, optimizing for XC and all-mountain use. Two weight options (385g standard, 325g superlight) offer flexibility for racers and technical riders alike.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Technical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-modulus Toray-grade carbon fiber (unidirectional + woven layup)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Size:\u003c\/strong\u003e 29\" (ISO 622)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e Asymmetric, U-shape; 30mm height, 25mm inner \/ 30mm outer width\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Standard – 385 ± 15g; Superlight – 325 ± 10g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Tire Width:\u003c\/strong\u003e 2.2–2.5\" for optimal performance; ETRTO compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrength \u0026amp; Tolerance:\u003c\/strong\u003e Forward compressive \u0026gt;300kg, lateral torsion \u0026gt;50kg, spoke hole tension \u0026gt;280kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Individually weighed; flatness \u0026lt;0.15mm; roundness \u0026lt;0.18mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeless Ready:\u003c\/strong\u003e Compatible with tubeless and standard clincher tire setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3 years, covers manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison: 30mm vs. Deeper MTB Rims\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003e30mm Rim\u003c\/th\u003e\n\u003cth\u003e40mm+ Rim\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Stiffness\u003c\/td\u003e\n\u003ctd\u003eHigh, for precise tracking\u003c\/td\u003e\n\u003ctd\u003eVery high, increased harshness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAero Drag (XC\/Trail)\u003c\/td\u003e\n\u003ctd\u003eMinimal penalty\u003c\/td\u003e\n\u003ctd\u003eMarginal increase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpact Resistance\u003c\/td\u003e\n\u003ctd\u003eBalanced\u003c\/td\u003e\n\u003ctd\u003ePotentially less compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSituational Relevance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eXC and all-mountain riders seeking weight savings without sacrificing stability\u003c\/li\u003e\n\u003cli\u003eCustom wheel-builders for performance brands and racing teams\u003c\/li\u003e\n\u003cli\u003eProfessional and enthusiast cyclists requiring verified quality and consistent tolerances\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the best 29er carbon rims for XC and all mountain under 400g?\u003c\/strong\u003e\u003cbr\u003eA: Rims like the Bola 29er (325–385g) balance low weight, lateral stiffness, and impact-tested build for XC\/all-mountain racing while retaining tubeless compatibility and an asymmetric profile for balanced spoke tension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is a 25mm inner width carbon rim good for trail and all mountain MTB tires?\u003c\/strong\u003e\u003cbr\u003eA: Yes, a 25mm inner width supports 2.2–2.5\" tires, offering a stable platform compatible with ETRTO standards, ideal for trail, XC, and all-mountain riding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are asymmetric carbon rims worth it for 29er builds?\u003c\/strong\u003e\u003cbr\u003eA: Asymmetric rims improve spoke angle balance, enhancing lateral stiffness and reducing stress on the wheel system—advantages confirmed by builder and team experience.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does a 30mm high rim compare to deeper mountain bike rims?\u003c\/strong\u003e\u003cbr\u003eA: A 30mm profile yields strong lateral stiffness with manageable weight and negligible aerodynamic drag, compared to deeper, heavier rims that may be stiffer but less compliant for technical MTB applications.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"29er Carbon MTB Rim 30mm Height 25mm Inner Width – XC \u0026 All Mountain Asymmetric | Bola\",\n  \"description\": \"29er Asymmetric Carbon MTB Rim – 30mm Height, 25mm Inner Width Lead Answer: This 29er carbon mountain bike rim features an asymmetric U-shape design with a 30mm profile and 25mm inner width, optimizing for XC and all-mountain use. Two weight options (385g standard, 325g superlight) offer flexibility for racers and technical riders alike. Key Features \u0026 Technical Specifications Material: High-modulus Toray-grade carbon fiber (unidirectional + woven layup) Rim Size: 29\\\" (ISO 622) Profile: Asymmetric, U-shape; 30mm height, 25mm inner \/ 30mm outer width Weight: Standard – 385 ± 15g; Superlight – 325 ± 10g Recommended Tire Width: 2.2–2.5\\\" for optimal performance; ETRTO compatible Strength \u0026 Tolerance: Forward compressive \u003e300kg, lateral torsion \u003e50kg, spoke hole tension \u003e280kg Manufacturing: Individually weighed; flatness Tubeless Ready: Compatible with tubeless and standard clincher tire setups Warranty: 3 years, covers manufacturing defects Comparison: 30mm vs. Deeper MTB Rims Spec 30mm Rim 40mm+ Rim Lateral Stiffness High, for precise tracking Very high, increased harshness Aero Drag (XC\/Trail) Minimal penalty Marginal increase Impact Resistance Balanced Potentially less compliant Situational Relevance XC and all-mountain riders seeking weight savings without sacrificing stability Custom wheel-builders for performance brands and racing teams Professional and enthusiast cyclists requiring verified quality and consistent tolerances Frequently Asked Questions Q: What are the best 29er carbon rims for XC and all mountain under 400g? A: Rims like the Bola 29er (325–385g) balance low weight, lateral stiffness, and impact-tested build for XC\/all-mountain racing while retaining tubeless compatibility and an asymmetric profile for balanced spoke tension. Q: Is a 25mm inner width carbon rim good for trail and all mountain MTB tires? A: Yes, a 25mm inner width supports 2.2–2.5\\\" tires, offering a stable platform compatible with ETRTO standards, ideal for trail, XC, and all-mountain riding. Q: Are asymmetric carbon rims worth it for 29er builds? A: Asymmetric rims improve spoke angle balance, enhancing lateral stiffness and reducing stress on the wheel system—advantages confirmed by builder and team experience. Q: How does a 30mm high rim compare to deeper mountain bike rims? A: A 30mm profile yields strong lateral stiffness with manageable weight and negligible aerodynamic drag, compared to deeper, heavier rims that may be stiffer but less compliant for technical MTB applications.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"Mountain Bike Carbon Rim\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/mtb30c30.jpg?v=1714120692\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1_fae0e7e2-8d29-4970-a857-679e01ce9d60.png?v=1714120692\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/hookless_cfbd757b-7c7c-4879-aed9-9ced91ddd127.jpg?v=1714120692\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/redbola_8c220d11-c530-4315-9672-68f72d10645d.jpg?v=1714120692\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/whitebola_8dc361d6-0729-40db-897c-71fa40ec7d28.jpg?v=1714120692\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/yellowbola_37619b14-45d3-40ed-b72a-d2cca5812ec2.jpg?v=1714120692\"\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"price\": \"270.00\",\n    \"priceCurrency\": \"USD\",\n    \"url\": \"https:\/\/bolacarbon.com\/products\/29-inch-carbon-offset-rims-30mm-high-25mm-wide-for-xc-or-all-mountain-bola\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"https:\/\/bolacarbon.com\"\n    }\n  }\n}\n\u003c\/script\u003e","brand":"Carbon Fiber Sporting Goods","offers":[{"title":"UD Matt \/ 28\/28 \/ Normal","offer_id":48126876909822,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 28\/28 \/ Superlight","offer_id":48126876942590,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Normal","offer_id":48126876975358,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ 32\/32 \/ Superlight","offer_id":48126877008126,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Normal","offer_id":48126877040894,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Matt \/ Customs \/ Superlight","offer_id":48126877073662,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Normal","offer_id":48126877106430,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 28\/28 \/ Superlight","offer_id":48126877139198,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Normal","offer_id":48126877171966,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ 32\/32 \/ Superlight","offer_id":48126877204734,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Normal","offer_id":48126877237502,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"UD Glossy \/ Customs \/ Superlight","offer_id":48126877270270,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Normal","offer_id":48126877303038,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 28\/28 \/ Superlight","offer_id":48126877335806,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Normal","offer_id":48126877368574,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ 32\/32 \/ Superlight","offer_id":48126877401342,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Normal","offer_id":48126877434110,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Matt \/ Customs \/ Superlight","offer_id":48126877466878,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Normal","offer_id":48126877499646,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 28\/28 \/ Superlight","offer_id":48126877532414,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Normal","offer_id":48126877565182,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ 32\/32 \/ Superlight","offer_id":48126877597950,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Normal","offer_id":48126877630718,"sku":null,"price":310.0,"currency_code":"USD","in_stock":true},{"title":"Marble Glossy \/ Customs \/ Superlight","offer_id":48126877663486,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/bola_AM_carbon_rims_f21fb55a-bdd8-4509-adcc-3bc5795e14cb.png?v=1780298559","url":"https:\/\/bolacarbon.com\/ko\/products\/29er-asymmetric-carbon-mtb-rim-30mm-height-25mm-inner-width","provider":"Bola Carbon Wheelset ","version":"1.0","type":"link"}