RS-M402-CB MTB Wheelset with Carbon Fiber Hub

The RS-M402CB represents the evolution of mountain bike wheel engineering — combining carbon precision with the proven strength of alloy rims. Designed for riders who demand responsiveness, control, and reduced weight, it’s built to perform across the most demanding trails and terrains.

Construction and Materials

• Rim Material: High-grade aluminum alloy

• Design: Double-wall construction with reinforced rivets for impact resistance

• Profile: 25 mm internal width × 21 mm height, optimized for modern MTB tires (2.0"–2.5")

• Finish: Matte black anodized surface with RS-UV colorful reflective decals

• Valve Type: AV (Schrader)

• Rim Diameter: Available in 27.5" and 29"

The carefully engineered aluminum rims deliver stiffness and lateral stability, while maintaining flexibility to absorb terrain impacts — ideal for trail and cross-country applications.

Carbon-Reinforced Hub System

• Hub Material: Aluminum alloy body with carbon fiber reinforcement

• Bearing Setup: Sealed cartridge bearings — 2 in the front hub, 4 in the rear

• Freehub Mechanism: High-density slotted drum tower compatible with 8–13-speed cassettes (Shimano/SRAM type)

• Axle Compatibility:

  • Boost Standard: Front 15 × 110 mm / Rear 12 × 148 mm

  • Quick Release: Front 100 mm / Rear 135 mm

• Brake Interface: Disc brake (6-bolt type)

The carbon-reinforced hub design reduces overall rotational mass while improving torque response and power transfer. Sealed bearings ensure smooth rolling and long-term durability, even under harsh off-road conditions.

Spokes and Lacing

• Spoke Count: 32 front / 32 rear

• Material: High-rigidity steel

• Gauge: 14G (2.0 mm)

• Head Type: Bent-head

• Lacing Pattern: Three-cross configuration for strength and optimal tension balance

This setup ensures stability during aggressive cornering and braking, while maintaining consistent spoke tension for reliable performance over time.

Performance and Weight

• Total Weight: Approx. 1.97 kg (pair, 29")

• Riding Type: Trail / XC / All-Mountain

• Recommended Tire Width: 2.0" – 2.5"

• Speed Compatibility: 8 – 13 speed

• Design Focus: Agility, efficiency, and lightweight durability

The reduced weight improves climbing efficiency and acceleration without sacrificing impact resistance — making the RS-M402CB a balanced choice for riders who value both strength and speed.

Key Features Summary

• Hybrid carbon-alloy hub for enhanced stiffness and reduced weight

• Double-wall alloy rims with rivets for long-term durability

• Sealed RS bearings (F2-R4) for maintenance-free performance

• Boost & QR compatibility for wide bike frame support

• 8–13 speed freehub ready for modern drivetrains

• 25 mm internal rim width for optimal tire support

• RS-UV colorful reflective decals for a unique visual finish

• Only 1.97 kg (pair, 29") for responsive trail performance

RS-M402CB — Lightweight strength. Carbon precision. Built for riders who push beyond limits.