27.5"/650B Road/Gravel/Adventure/CX Disc GRM Wheels

The GRM is a popular choice for those that want to run bigger tires on their 700c platform bikes. Whether your ride is designed for Road, or Gravel, the GRM's 27.5"/650B size with an internal width of 25mm allows a tire range of 1.6"~2.3" or 40c~60c.

Built the same way we build our mountain wheels, its not afraid of seeing some terrain and air action. Being weight conscious, our rims maximize strength-to-weight by featuring a lean 415g per rim. The GRM is laced with the Shogun hubs, offering high engagement and low maintenance for pure performance and no compromise.


Hand laced in-house with proprietary techniques to ensure no truing or re-tensioning necessary.


The GRM wheels features

  • Hand laced, yielded-stress-relieved in Metro Vancouver, Canada.
  • TAIRIN premium 6069-T6 aged alloy 25mm internally wide rims front / back.
  • Modern rim profile Tubeless compatible with bed lock design + Tire channel for ease of setup.
  • The Shōgun hub set. You can mix and match front and rear sizes.(15x100 | 12x100 | 9x100 (thru-axle QR) front axle with 12x142 | 10x135(thru-axle QR) mm rear axle)

     Thru-Axle QR is compatible with standard quick release vertical dropouts.

  • TORQUE CAPS (For RockShox) available for front hubs 15x110mm and 15x100mm please add them to your order following this link here.
  • Various combinations of Sapim spokes and nipples to tailor to your riding demand.

(For more information about our TAIRIN rims and hub sets, please check product technicals)

This wheelset comes with a set of options for spoke and nipple combinations
D-light / Alloy – This wheelset comes standard with Sapim D-light double butted spokes and Sapim alloy nipples. Top performance combination for weight and strength in its spoke value range.
CX-Ray / Alloy - For ultra performance in weight-to-strength ratio, we offer the Sapim CX-Ray spokes with Sapim Alloy nipples. This combination is the lightest but still provides a very solid platform for all terrain riding. The CX-Ray spoke is flat-bladed and well known for its flexibility and tensile properties.


Nipples - Sapim Poylax
In the past, aluminum nipples had only one positive argument, the weight. All other features like corrosion resistance, friction, stiffness were specific to brass nipples. This changed in the last couple of years drastically. All Sapim aluminum nipples are now anodized. Salt spray tests showed better results than brass nickel plated nipples. Sapim has been able to reduce friction with a special coating. Using 7075 alloy with additional strength added by the heat treatment T6, alloy nipples are now stronger than brass. The GR25 Disc wheels will only come with Poylax Alloy nipples.

Freehub options
Select your drivetrain specific freehub for this wheelset. Options are for Shimano MTB and Road cassette Freehub (compatible with both styles in 1 freehub) and Sram XD/XX1 freehub. Planning to change drivetains in the future? No problem. Freehubs are interchangeable and can be swapped as quickly as snap off / snap on. We also sell freehubs individually.


Brake Fitting options
All wheelsets come with standard 6-bolt brake mount.

Hand laced wheels

Our wheels are hand laced in Surrey, BC. and we use multiple traditional methods of spoke yielding-stress-relieving, so that when you receive your wheel, you can rest assured that there is no seat in periods, or spokes losing tension in initial rides - these which would require re-tensioning like machine and poorly built wheels.


Premium hand built wheels requiere dedication and takes much longer than machine built, but the accuracy and attention to detail produced by the traditional way is one of the key aspects that makes Tairin wheels superior. By choosing Tairin Wheels, rest assured that every wheel has been hand crafted by a master wheel builder, so you get the best quality and labour, at the best deal out there.

We know that purchasing a new wheelset can be overwhelming with all the information at hand. Any questions and inquiry can be addressed by contacting us.

  • Specifications

    Wheel Size 27.5"/650B
    Tire recommendation

    40c~60c - And for 29" tires up to 1.8"

    Tubeless tires, max 100 PSI

    External Rim Width 30mm
    Internal Rim Width 25mm
    Rim Depth 23mm
    Hubs Tairin Shōgun
    Bearings Sealed Cartridge
    Engagement 96 Point, 6-Pawl, 3 Steps/Pawl
    Spokes Sapim D-light or CX-Ray (Black)
    Spoke Nipples Sapim Alloy (Black)
    Spoke Count 32h F/R
    Base Weight 1570g
    Recommended Use Gravel, Road, Adventure, Cyclocross, Cross Country.
    Hub Warranty 3 Years
    Rim Warranty 3 Years
    Rim Crash Replacement 5 Years
Front Axle
Rear Axle - Freehub Fit
Spoke and Nipples
Decal Color (for custom color, select white)
Tubeless Tape + Valves