Description: Session25 ASYM
From gravel adventures to XC exploits, the HiFi Session25 ASYM hookless, asymmetric carbon gravel & mountain bike tubeless ready clinchers are all about improving your ride experience. The Session carbon design makes it easy to hammer on the climbs with the durability needed for re-entry from higher altitudes. The new rim profile measures just over 25mm internal rim width, making it ideal for tires 35mm and up for gravel, or for XC riders and racers looking for a shred-ready lightweight wheel mated to 2.0 to 2.3″ tires. 27.5 rims weigh just 330g, and 29er rims just 350g! And the asymmetric rim profile balances our spoke tensions, making for an even stiffer and stronger wheel build.
Whether 27.5 or 29er, all Session wheels are shipped with lockrings, tubeless tape, and valves included, ready to take your existing ride and amplify it.
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!
Fidelity M Disc and Boost hubs are now all centerlock, but we do offer some really nifty adaptors for those looking to run 6-bolt rotors.
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 11-speed Shimano/SRAM freehub bodies; SRAM XD / XDR Drivers; or Microspline freehubs. Fear not: these are future proof (or at least future resistant)!
Session25 ASYM Liner Notes
Rim profiles: Session25 ASYM rims are 25mm deep and have a 25mm internal width. 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 bearings. Durable, dependable and light.
Freehub: Shimano/SRAM 11; SRAM XD/XDR Drivers; Microspline 12 available
Spokes: 28h 2x front / 28h 3x rear; Sapim bladed spokes; Sapim Securelock alloy nipples (brass also available).
Wheel Weight: approx. 1330g (27.5/650b) | 1380g (29er/700c)
Discipline: The Session25 ASYM wheels are our top-notch gravel / adventure / cross-country wheelset for 29ers and 27.5 (650b) MTBs
MSRP: $1,950 set up in the axle configuration you require (15mm, 12mm, QR, etc).
Need help deciding which model is best for you? GET IN TOUCH, and we’ll be happy to help!