Description
Specifications
Rim | |
Series | 27.5er Pro28 |
Wheel Size | 27.5″ |
Tire Compatibility | Clincher/ Tubeless |
Rim Depth | 24mm |
Inner Width | 22.5mm |
Outer Width | 28mm |
Rim Profile | Asymmetrical |
Offset | 2.6mm |
Bead Type | Hookless |
Other | |
Assembly Method | Handbuilt |
Rim Finish | Glossy Marbled |
Max Tire Pressure | 50psi/3.4bar |
Extras | Rim Tape(Installed), Tubeless Valves(Installed) |
Weight (Pair) | 1233g+(See FAQ Data information) |
Rider Weight Limit | 275lbs/125kg |
Recommended Tire Sizes | 1.9″-2.3″ |
Intended Use | Cross Country / Gravel |
ERD | 553mm |
Hub | |
Front Hub Spacing | QR x 100mm / 15x100mm / 15x110mm |
Rear Hub Spacing | QR x 135mm / 12x142mm / 12x148mm |
Bearing | TPI |
Brake Compatibility | Disc (Center Lock/6-bolt) |
Freehub Type | Ratchet System 36T |
Freehub Compatibility | Shimano / SRAM XD / Micro Spline |
Spoke | |
Front Spoke Pattern | 3X/3X |
Rear Spoke Pattern | 3X/3X |
Spoke Count | 28F/28R |
Spoke Type | Sapim CX-Ray |
Nipple Type | Sapim Secure Lock |
XC Wheels 27.5ER PRO28

Features
- The Pro28 comes in at an ultralight 1233g for the pair. This allows for superior acceleration in cross country competitions as well as an advantage on steeper sections.
- The inner rim is 22mm wide, supporting 1.9”-2.3” tires.
The rims are hookless, and extra rolled carbon fiber is added to reinforce the bead area, providing improved impact resistance and a significant boost in strength. - With Pro28’s 2.6mm offset, the spoke tensions on the drive side and the non-drive side have been made similar. This effectively improves the riding stability and cornering.
XC Wheels 27.5ER PRO28 color

RIMS
During the rim production process, internal inflatable bladders from a special material are used to produce smoother walls, resulting in a lighter rim. These bladders are then completely removed without the use of harsh chemicals through the valve hole. Our unique manufacturing process makes is so that the rim does not have to be patched to extract the bladders like traditional manufacturers. This significantly improves the strength of the rims.
RIM TYPE
The rims are asymmetrical. This allows for equal spoke tension which creates a stronger wheel that stays true.
We use both genuine Toray T700 and T800 carbon fiber which is superior to generic carbon fiber used by many manufacturers. The two types of carbon fiber are used in different places to increase the wheel’s strength to weight ratio while reducing lateral and radial forces as well as increasing impact resistance.
The rims have also been specifically designed to make sealing tubeless tires using a floor pump easy.
SPOKES
Sapim CX-Ray spokes come standard. We take precautions to ensure that spoke windup is minimized so wheels don’t go out of true. After the initial truing, the wheel is sideloaded. This process is repeated again. The wheels are sideloaded a total of 16 times. We see this as an essential quality control standard. As a result, our wheels are guaranteed to stay within 0.2mm of true.
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