Project 321

RG3 Road XDR Center Lock Rear Hub - 12x142mm

Project 321 RG3 Road XDR Center Lock Rear Hub in 12x142mm is a precision-focused rear hub for modern road and gravel builds that prioritize fast pickup, low coasting resistance, and long-term reliability. Built around M-Pulse magnet-sprung pawls, it targets riders who want crisp engagement on punchy efforts and technical terrain without paying for it in drag when the pedals stop turning.

Upgrade-focused highlights for road and gravel wheel builds

1. M-Pulse magnet-sprung pawls - Designed for ultra-low drag while delivering immediate engagement feel when power is applied
2. XDR driver body - Compatible with SRAM XDR road and gravel cassettes for current-gen 12-speed drivetrain setups
3. Center Lock rotor interface - Ships ready for Center Lock brake rotors for clean installs and consistent rotor alignment
4. 6-Lock upgradability - Can be converted with an optional 6-Lock assembly for riders standardizing on 6-bolt rotors
5. 12x142mm thru-axle fit - Matches common road/gravel rear spacing for stiffness and secure wheel retention
6. Made in Canada - Built with tight manufacturing control for riders who value serviceability and consistency