Limited Edition Matte Maple Road & Gravel Hub Set
Performance without Compromise.
G3 features instant rock-solid engagement, patent pending 6-lock technology, and more.
Save 25% at checkoutOnly Until Dec 2nd
Unit price per
Limited Edition Matte Maple
For this Fall 2025 limited release, we've matte finished our 7075 aluminum hub shells for the richest Maple colour treatment yet. We have a limited number of 24 hole front and rear hubs on hand to ship out for early orders, and we're going to sell through until December 1st. Backordered hub sets will be sent to anodizing once the order window has closed. Backordered hubs should ship to buyers in late December/early January.
Customization: You pick your endcap colours from our standard selection. Due to the matte finish on these hubs, standard Maple endcaps will not be an exact match to these shells. We recommend black or silver. Please add your preferred colour to the order notes, or we will ship silver endcaps as a default.
Project321's G3/RG3 Hub Set
The G3 front hub is equally comfortable on road, gravel, and trail. Designed with slightly larger bearings and a taller spoke flange (compared to RG3 front hubs), the G3 front hub it is the choice for riders looking for the most direct and responsive wheel. G3 front hubs are also compatible with both 12mm and 15mm Thru-axles, making it our most versatile front hub.
The RG3 rear hub is Project321's new rear hub designed specifically for road and gravel riders who demand precision, speed, and durability across any road surface. Building on our proven M-Pulse Technology, RG3 delivers instant, rock-solid engagement, ultra-low drag, and unmatched reliability—whether you are hammering on smooth tarmac or grinding through unpredictable gravel terrain.
Engagement
At the heart of the RG3 is Project321’s M-Pulse Technology, a magnetically actuated engagement system that delivers lightning-fast power transfer and exceptionally low drag.
Borrowing the 72-tooth drive ring and three-step magnetic pawl layout from their G3 mountain bike platform, the RG3 provides 144 Points of Engagement in its standard configuration—equating to just 2.50° of rotation. Riders seeking even faster response can upgrade to 288 POE, for a crisp 1.25° engagement angle.
Unlike traditional spring actuated drive mechanisms, M-Pulse uses magnets to actuate the pawls—eliminating tiny springs that can be lost or damaged during servicing. This not only reduces drag, but also improves reliability and ease of maintenance.
Learn more about the technology behind RG3.
Specifications:
- Front axle compatibility: 12x100 or 15x100 front (Thru-axle only)
- Rear axle compatibility: 12x142 rear (Thru-axle only)
- Driver options: SRAM XDR, Shimano HG-Road, Shimano Microspline
- Engagement: 144 POE/2.50°, expandable to 288 POE/1.25°
Description
Limited Edition Matte Maple
For this Fall 2025 limited release, we've matte finished our 7075 aluminum hub shells for the richest Maple colour treatment yet. We have a limited number of 24 hole front and rear hubs on hand to ship out for early orders, and we're going to sell through until December 1st. Backordered hub sets will be sent to anodizing once the order window has closed. Backordered hubs should ship to buyers in late December/early January.
Customization: You pick your endcap colours from our standard selection. Due to the matte finish on these hubs, standard Maple endcaps will not be an exact match to these shells. We recommend black or silver. Please add your preferred colour to the order notes, or we will ship silver endcaps as a default.
Project321's G3/RG3 Hub Set
The G3 front hub is equally comfortable on road, gravel, and trail. Designed with slightly larger bearings and a taller spoke flange (compared to RG3 front hubs), the G3 front hub it is the choice for riders looking for the most direct and responsive wheel. G3 front hubs are also compatible with both 12mm and 15mm Thru-axles, making it our most versatile front hub.
The RG3 rear hub is Project321's new rear hub designed specifically for road and gravel riders who demand precision, speed, and durability across any road surface. Building on our proven M-Pulse Technology, RG3 delivers instant, rock-solid engagement, ultra-low drag, and unmatched reliability—whether you are hammering on smooth tarmac or grinding through unpredictable gravel terrain.
Engagement
At the heart of the RG3 is Project321’s M-Pulse Technology, a magnetically actuated engagement system that delivers lightning-fast power transfer and exceptionally low drag.
Borrowing the 72-tooth drive ring and three-step magnetic pawl layout from their G3 mountain bike platform, the RG3 provides 144 Points of Engagement in its standard configuration—equating to just 2.50° of rotation. Riders seeking even faster response can upgrade to 288 POE, for a crisp 1.25° engagement angle.
Unlike traditional spring actuated drive mechanisms, M-Pulse uses magnets to actuate the pawls—eliminating tiny springs that can be lost or damaged during servicing. This not only reduces drag, but also improves reliability and ease of maintenance.
Learn more about the technology behind RG3.
Specifications:
- Front axle compatibility: 12x100 or 15x100 front (Thru-axle only)
- Rear axle compatibility: 12x142 rear (Thru-axle only)
- Driver options: SRAM XDR, Shimano HG-Road, Shimano Microspline
- Engagement: 144 POE/2.50°, expandable to 288 POE/1.25°
Hub Dimension Chart
Hub Comparison Chart
P321 Warranty
If you are experiencing issues with your Project 321 hubs and you feel you require warranty help, please use the link below to learn more.
