Revamped Trek Session adds 29er option

Venerable DH bike thoroughly updated with slacker head angle, lower BB

27.5 29er DH
WC Lourdes Trek Session

The Trek Session wows the crowd in its debut at the World Cup in Lourdes, France.

Frequently Asked Questions

Is the Session still compatible with coil shocks?
Yes. Updated metric shock sizing allows riders to run most aftermarket coil shocks.

Is this a new headset standard?
No. It uses the common 56mm/49mm cup size, so you can still run your favorite headset if you’re happy with the stock head angle.

Can the new X2 be tuned with volume spacers?
Yes. Float X2 offers additional air spring tuning by adding or removing volume bands. Visit for more information.

Trek Session 27.5 9.9 Shock Mount Detail

The shock mount now does away with the Full Floater technology since new shocks deliver the same performance. This results in a stiffer and lighter frame.

What is the rear hub spacing?

What about an alloy Session?
While the new Session’s changes focus squarely on racing speed, the Session 8 returns as a carry forward model that retains the same frame as years’ past. This frame features a more all-around geometry that works well for racing, but also feels equally at home playing around the bike park.

Who’s the right rider for Session 27.5 and 29?
The Session 27.5 will be the overwhelming right choice for most riders. It’s fast and nimble. The Session 29 is for the accomplished rider looking for every bit of speed possible.

Trek Session

A great DH bike has to be comfortable with rocks.

What are the main differences between the Session 29 and 27.5?
Aside from wheel size and ride, the Session 27.5 and 29 feature the same frame features. The Session 29 geometry differs in that it has a slightly longer wheelbase due to the bigger wheels and the BB drop is greater giving it more stability.

What’s included with the framesets?
The Session 9.9 27.5” frameset includes the Fox X2 air shock and fixed angle headset cups. The Session 9.9 29 will include the Fox X2 air shock, fixed angle headset cups, and the Fox 49 fork. We include the fork on the Session 29 since it’s such a unique, relatively scarce fork.

Model / Price / Availability
  • Session 8 27.5 – $4000 – Now
  • Session 9.9 27.5 RSL – $8000 – September
  • Session Alloy 27.5 frameset – $2100 – Now
  • Session Carbon 27.5 frameset – $4000 – August
  • Session Carbon 29 frameset* – $5000 – October

*Session 29 frameset includes Fox fork as well as frame and shock

For more information visit

About the author: Francis Cebedo

The founder of mtbr and roadbikereview, Francis Cebedo believes that every cyclist has a lot to teach and a lot to learn. "Our websites are communal hubs for sharing cycling experiences, trading adventure stories, and passing along product information and opinions." Francis' favorite bike is the last bike he rode, whether it's a dirt jumper, singlespeed, trail bike, lugged commuter or ultralight carbon road steed. Indeed, Francis loves cycling in all its forms and is happiest when infecting others with that same passion. Francis also believes that IPA will save America.

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