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CMR Light i30

Designed for riders who prioritize low weight, efficiency, and responsive handling, WTB CMR Light combines lightweight carbon rims with race-proven Frequency 7X hubs to deliver confident performance on demanding trails.

Wheel

Front 29" Rear 29"

Hub

110x15mm / Boost 24h 148 x 12mm / Boost 24h

Freehub & Brake Mount

N/A / Centerlock SRAM XD/R / Centerlock Shimano Micro Spline / Centerlock

Variant

$850.00

SKU: W045-0338

Product name: CMR Light i30 x 29", 110x15mm, 24h, CenterLock, Wing 21

Free shipping $100+Contiguous US only

Free shipping for orders over $100, excluding deliveries to Hawaii and Alaska.

Orders are typically processed within 1-2 business days and shipped via UPS standard ground service from our warehouse in San Rafael, California.

30 day return policy

Decide a product wasn't for you? Return any unused product for up to 30 days with no questions asked.

Warranty policy

We guarantee our products for at least two years.

Usage Cross Country

Product description

CMR Light i30 prioritizes low weight, efficiency, and a lively ride feel. Its 24-spoke configuration and CenterLock brake mount help minimize weight, while the rim’s lateral stiffness delivers responsive handling without sacrificing the vertical compliance needed to smooth out rough terrain. It's the choice for riders looking to maximize efficiency and maintain a nimble, precise feel on the trail.

CMR Light i30

$850.00

Frequency 7X Hubs

Race-tested and World Cup-proven. These state-of-the-art hubs are built to perform at the highest level, at the lowest possible weight.

DLC (Diamond-Like Carbon) Coating

Frequency 7X hubs use 36T ratchets with DLC (Diamond-Like Carbon) coating to deliver 10 degrees of engagement, greater hardness, and significantly lower friction than traditional hard chrome-plated drive systems.

Large Enduro Bearings

Frequency 7X hubs use larger than industry-typical Enduro bearings in both the hub shell and freehub body to increase overall load capacity and create a stiffer axle assembly, improving reliability and reducing maintenance intervals.

Splined Inner Ratchet Ring

Frequency 7X inner ratchet ring keys into place with splines rather than threads, allowing the hubs to withstand over twice the torque of traditional designs without requiring specialist tools for servicing.

Light without compromise

CMR Light features a purpose-built, lightweight carbon rim engineered to deliver exceptional strength, stiffness, and impact resistance. Its 30mm internal width provides an optimized foundation for modern mountain bike tires, while a hookless rim design and wide upper legs help protect against pinch flats and support reliable tubeless performance.

TCS Tubeless Ready

TCS (Tubeless Compatible System) is WTB's standardized tubeless rim/tire system. TCS tubeless ready compatible tires eliminate the need for tubes, reduces weight, and accommodates lower tire pressures for improved traction and comfort compared to a traditional tube-type tire.

TCS (Tubeless Compatible System) is our industry-leading tubeless rim/tire system designed to international ETRTO and ISO standards.

WTB's responsive, patent-pending hub/ratchet interface sets a new standard in performance and reliability.

All WTB ratchets use a DLC (Diamond-Like Carbon coating) to deliver greater hardness and significantly lower friction than traditional hard chrome-plated drive systems.

The inner (hub side) ratchet ring keys into place with splines rather than threads, allowing the hubs to withstand over twice the torque of traditional designs without requiring specialist tools for servicing.

WTB carbon components are designed to provide a perfect blend of stiffness and compliance while also proving to be nearly indestructible.

Additional carbon at each spoke bed improves overall rim strength and durability while also minimizing weight in areas where less strength, and therefore material, is needed.

Spoke holes are drilled at an angle to match the natural spoke path between a rim and hub. Eliminates binding and lateral loading of the nipples to increase wheel durability.

Sloped rim valley allows the bead of the tire to easily and smoothly move into place during installation and inflation.

Installed between the rim and tubeless tape to prevent tape from sagging at each spoke hole and make tire inflation easier while also preventing puncture from a broken spoke.

Aerodynamic wing shape to reduce drag at the trailing end of each spoke and improve overall efficiency while trimming weight.

What type of riding is the CMR Light designed for?

The CMR Light is designed for riders who prioritize low weight, climbing efficiency, and responsive handling. Its lightweight carbon construction and 24-spoke configuration deliver a lively ride feel, making it ideal for riders looking to maximize efficiency without sacrificing control on technical trails.

What makes the CMR Light different from the CMR Trail?

The CMR Light prioritizes low weight and efficiency, featuring 24 spokes and a CenterLock brake mount to minimize weight. The CMR Trail uses 28 spokes and a six-bolt brake mount for a more robust setup suited to aggressive riding. Both share the same Frequency 7X hub platform and 30 mm internal rim width, but the CMR Light is tuned for a lighter, more responsive ride feel.

What are the benefits of the CMR Light carbon rims?

The CMR Light carbon rims combine low weight with high strength, lateral stiffness, and impact resistance. Their design delivers precise handling and confident cornering while retaining the vertical compliance needed to smooth out rough terrain. A 30 mm internal width provides an optimized foundation for modern mountain bike tires.

What makes Frequency 7X hubs better?

Frequency 7X hubs feature a patent-pending hub and ratchet interface, DLC-coated ratchets for increased hardness and reduced friction, and a splined inner ratchet ring designed to withstand over twice the torque of traditional threaded designs. Larger Enduro bearings and fully sealed internals further enhance durability, reliability, and service intervals.

What is WTB’s Ride With Confidence Guarantee?

WTB’s Ride With Confidence Guarantee covers its carbon rims against breakage while riding. If you're the original owner and break a WTB carbon rim while riding, WTB will provide a free replacement rim, giving you added confidence to push your limits.

Features