# 29er Asymmetric Carbon MTB Rim — 27mm Internal, 30mm Height, 380g (XC/Trail) Imagine climbing technical singletrack, sprinting across open XC sections, and feeling a snappier response from every pedal stroke — this 29-inch asymmetric carbon rim is engineered to deliver that performance. Designed for cross-country and trail riders who want lower rotational weight, improved lateral stiffness, and wheels that stay true under load. Available in a superlight 380 ± 10g variant or a standard 450 ± 15g build, with OEM customization and a 3-year warranty. ## 29er Asymmetric Carbon MTB Rim - Designed for XC and Trail Performance The rim’s asymmetric, offset spoke bed balances spoke tension for increased wheel durability and more consistent power transfer, while a 27mm internal width accommodates modern tire profiles for traction and stability. A 30mm rim profile delivers a balanced mix of lateral stiffness and compliance suitable for mixed-terrain riding, and the hookless U-shaped design is tubeless compatible for lower pressures and improved puncture resistance. The lightweight Toray-grade high-modulus carbon fiber construction reduces rotational mass to improve acceleration and handling without sacrificing robustness. Riders experience a firmer, more predictable feel through corners and technical sections thanks to the rim’s optimized shape and material selection. ### Why it fits your routine - **Optimized for XC and trail:** 29er (622 mm BSD) sizing with a 30mm profile provides a performance-oriented balance of stiffness and compliance for varied terrain. - **Modern tire support:** 27mm internal width (33mm outer) supports wider tires for improved grip and stability on loose or technical trails. - **Asymmetric spoke bed:** Offset spoke holes (28–32) even out spoke tension for stronger, longer-lasting wheels and improved lateral stiffness. - **Lightweight options:** Superlight variant at 380 ± 10g reduces rotational weight for quicker acceleration; standard variant at 450 ± 15g offers a durable alternative. - **High-quality materials:** Constructed from high-modulus Toray-grade carbon fiber to combine low weight with structural strength. - **Tubeless-ready hookless design:** Enables secure tubeless setups for lower pressures, better traction, and fewer flats. - **Technical fit and compatibility:** Effective Rim Diameter (ERD) 579mm and spoke hole options for common builds and hubs. - **Recommended maintenance:** Designed for spoke tensions above 280kg to maintain optimal wheel integrity and performance. - **Warranty and customization:** OEM customization available and a 3-year manufacturer warranty for peace of mind. Technical specifications: Wheel Size 29er (622 mm BSD); Rim Height 30mm; Inner Width 27mm; Outer Width 33mm; Spoke Holes 28–32 (offset for tension balance); ERD 579mm; Material High-modulus Toray-grade carbon fiber; Rim Shape U-shaped, hookless tubeless compatible; Recommended Spoke Tension >280kg; Weight Tolerance Superlight 380 ± 10g | Standard 450 ± 15g. ## Details - **Price:** 310.0 USD - 320.0 USD - **Type:** Carbon MTB Rim - **Tags:** 27mm internal carbon rim, 27mm internal rim, 29er carbon MTB rim, 29er mountain bike rim, asymmetric MTB rim, carbon mtb rim, carbon rim for trail, lightweight mountain bike rim, lightweight xc rim, mtb, rims, spoke tension balance, trail bike rim, tubeless compatible rim, XC trail carbon rim, xc wheel upgrade ## Variants | Variant | Price | Available | |---------|-------|-----------| | UD Matt / 28/28 / Normal | 310.00 USD | In stock | | UD Matt / 28/28 / Superlight | 320.00 USD | In stock | | UD Matt / 32/32 / Normal | 310.00 USD | In stock | | UD Matt / 32/32 / Superlight | 320.00 USD | In stock | | UD Matt / Customs / Normal | 310.00 USD | In stock | | UD Matt / Customs / Superlight | 320.00 USD | In stock | | UD Glossy / 28/28 / Normal | 310.00 USD | In stock | | UD Glossy / 28/28 / Superlight | 320.00 USD | In stock | | UD Glossy / 32/32 / Normal | 310.00 USD | In stock | | UD Glossy / 32/32 / Superlight | 320.00 USD | In stock | | UD Glossy / Customs / Normal | 310.00 USD | In stock | | UD Glossy / Customs / Superlight | 320.00 USD | In stock | | Marble Matt / 28/28 / Normal | 310.00 USD | In stock | | Marble Matt / 28/28 / Superlight | 320.00 USD | In stock | | Marble Matt / 32/32 / Normal | 310.00 USD | In stock | | Marble Matt / 32/32 / Superlight | 320.00 USD | In stock | | Marble Matt / Customs / Normal | 310.00 USD | In stock | | Marble Matt / Customs / Superlight | 320.00 USD | In stock | | Marble Glossy / 28/28 / Normal | 310.00 USD | In stock | | Marble Glossy / 28/28 / Superlight | 320.00 USD | In stock | | Marble Glossy / 32/32 / Normal | 310.00 USD | In stock | | Marble Glossy / 32/32 / Superlight | 320.00 USD | In stock | | Marble Glossy / Customs / Normal | 310.00 USD | In stock | | Marble Glossy / Customs / Superlight | 320.00 USD | In stock | ## Images - 29er Asymmetric Carbon MTB Rim with 30mm height and 27mm internal width, lightweight at 380g, featuring UCI logo and warranty - Cross-section of 29er carbon MTB rim showing 30mm height and asymmetric offset - Hookless carbon rim design detail for 29er mountain bikes, optimizes tubeless performance - 29er Asymmetric Carbon MTB Rim | 30mm Height, 30mm Inner Width | Freeride & Enduro Carbon Fiber Sporting Goods - 29er Asymmetric Carbon MTB Rim | 30mm Height, 30mm Inner Width | Freeride & Enduro Carbon Fiber Sporting Goods ## Additional Information - **Related products settings:** ahead - **AI Summary:** The 29er Asymmetric Carbon MTB Rim is a high-modulus carbon rim for cross-country and trail riders building a 29-inch wheelset with a 27 mm internal width, 30 mm profile, and asymmetric spoke bed. Its offset drilling is designed to balance spoke tension for riders seeking a lightweight rim with wheel-strength-focused construction. --- > Source: [Bola Carbon Wheelset ](https://bolacarbon.com/products/29er-asymmetric-carbon-mtb-rim-27mm) > Updated: 2026-08-03