27.5/650b Session30 ASYM Carbon MTB & Gravel

The new Session30 ASYM rim profile measures in at a 30mm internal rim width, making it ideal for tires from +/- 2.0" up to 2.5". There's no upper limit to what these rims can handle, but that's the "sweet spot." The 27.5 rims weigh just 380g, and 29er rims just 405g! And the asymmetric rim profile balances our spoke tensions, making for an even stiffer and stronger wheel build.

Updated MTB Hubs

HiFi offers a MTB-specific disc hub, both in Boost and regular 100mm / 142mm spacing (or 135mm for those QR holdouts out there). The Fidelity M Disc centerlock has regular disc spacing, while the Fidelity Boost takes care of the wider axle needs. The rear hub has 6 offset pawls with two engagement points each, and they interact with a ring that sports 102 teeth. That translates to an engagement angle of less than 2 degrees—lightning quick!

HiFi disc hubs are now all centerlock, but we do offer some really nifty adapters that let you run 6-bolt rotors with a lockring on our hubs (or any centerlock hub). No bolts required!

Some Future Proofing and Built-in Flexibility

Any of the Session wheels can be built around our Fidelity Boost hubs (110mm front, 148mm rear). And for those running non-Boost setups, the Fidelity M Disc front hub quickly converts to 15mm or 12mm thru-axle, or to quick release, and the rear hub converts to a 142×12 or 135mm QR. End caps to match your preferred setup are included with all of our MTB wheels. All of our HiFi Fidelity Disc hubs can be set up with with Shimano/SRAM HG freehub bodies; SRAM XDR/XD Drivers; or Microspline freehubs. Fear not: these are future proof (or at least future resistant)!

All Session wheels are shipped with lockrings, tubeless tape, and valves included, ready to take your existing ride and amplify it.

Session30 ASYM

Rim profiles: Session30 ASYM rims are 26mm deep and have a 30mm internal width, with an asymmetric rim profile. All Sessions are hookless rims.

Hubs: HiFi Fidelity M Disc and Fidelity Boost hubs with lightning fast engagement at less than 2 degrees. Japanese stainless steel cartridge bearings. Durable, dependable, and light.

Freehub: Shimano/SRAM HG; SRAM XDR/XD Drivers; Microspline all available

Spokes: 28h 2x front and / 28h 3x Sapim CX-Ray bladed spokes; Sapim Securelock alloy nipples (brass also available).

Wheel Weight: approx. 1430g (27.5/650b)

Discipline: The wider Session30 ASYM wheels are great for trail / all-mountain riding, Enduro, and many XC riders/racers and gravel adventurers also opt for the increased tire stability these offer for 2.0" and up tires.

What's included: HiFi tubeless disc wheels all come with the freehub you require, centerlock lockrings, tubeless tape, and tubeless valves. QR orders include quick release skewers.