The GMR 38mm rim depth makes for a great all rounder. If you’re looking for a wheelset for every day use, particularly if your riding conditions are often windy, this is the one. The 38mm height offers a great aero boost over a standard alloy wheelset but doesn’t add so much side area that the wind can push you around.
Of course, the shallower rim is also lighter, so it’s well suited to hilly terrain.
The GMR 38 Tubeless Rim-Brake is optimized for wide tires with lower tire pressure to meet the performance needs of modern riders in search of low rolling resistance and high compliance. With an internal width of 19mm, the wheelset is well suited for rough roads and tests fastest with a 28mm tire in the majority of wind angles.
Brake Performance
Specifically formulated to withstand the same heat our rims can take on, our brake pad compound is exclusive for GMR Series wheelsets. Using a specially formulated rubber compound, durometer and friction agent, we developed a proprietary brake pad and reduced braking distances over that of other carbon fiber wheelsets.
Specifications
Specifications
38mm rim depth for a balance between aerodynamics and control.
High temperature resin for consistent braking on long descents.
Extra stiff hub shell design.
Proprietary precision machined alloy hubs.
Sapim CX-Ray spokes with Sapim Polyax double square nipples.
Sealed cartridge bearings.
Hand-built assembly.
Clincher, Tubeless Ready.
Rim brake.
Weight: 640g
Diameter: 700c
Hub: 6061-T6 Alloy
Bearing Size: 6901
Hub Compatibility: QR
Rim Depth: 38mm
Rim Width (Outside): 26mm
Rim Width (Inside): 19mm
Color: UD Carbon
Spokes: Sapim®CX-Ray Aero Spoke
Spoke Shape: Straight Pull, Bladed
Spoke Count: 20
Spoke Pattern: Radial
Spoke Length: 272mm
Nipples: 7075 Alloy Polyax Double Square
External Nipples: Yes
Tire Compatibility: Tubles Ready (TLR) / Clincher
Max Tire Pressure: 70-100psi (also refer to Tire sidewall)
Tire Width: 700c x 28-38mm
Rear Wheel
Weight: 830g
Diameter: 700c
Hub: 6061-T6 Alloy
Bearing Size: 6802
Hub Compatibility: QR
Cassette Compatibility: Shimano/SRAM: 9/10sp, 11sp
Rim Depth: 38mm
Rim Width (Outside): 26mm
Rim Width (Inside): 19mm
Color: UD Carbon
Spokes: Sapim®CX-Ray Aero Spoke
Spoke Shape: Straight Pull, Bladed
Spoke Count: 24
Spoke Pattern Non-Drive: Radial
Spoke Pattern Drive: 2 cross
Spoke Length Non Drive: 273mm
Spoke Length Drive: 280mm
Nipples: 7075 Alloy Polyax Double Square
External Nipples: Yes
11-Speed Compatible Hub: Yes
12-Speed Compatible Hub: Yes w/ (Aftermarket XDR Freehub purchase)
Tire Compatibility: Tubles Ready (TLR) / Clincher
Max Tire Pressure: 70-100psi (also refer to Tire sidewall)
Tire Width: 700c x 28-38mm






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