2025 Trek Session vs 2025 Specialized Demo Race
We can't match sizes for these two: one of them has no stack and reach for the sizes shown.
What changes on the Specialized Demo Race
- Frame stack
- n/a
- One of the bikes has no number for this
- Frame reach
- n/a
- One of the bikes has no number for this
- Wheelbase
- +18 mm
- Longer: steadier at speed
- Head angle
- −0.2°
- About the same head angle
- Chainstays
- +9 mm
- Longer: more planted
The two frames
We can't draw these frames yet. The Trek Session numbers we have for size R1 are missing the reach, stack and seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Session R1 | Specialized Demo Race S3 | Difference |
|---|---|---|---|
| Head tube angle | 63 | 62.8° | −0.2° |
| Effective top tube | 587 | not listed | |
| Chainstay length | 439 | 448mm | +9 mm |
| Wheelbase | 1246 | 1264mm | +18 mm |
| Standover | 747 | not listed | |
| Reach | not listed | 446mm | |
| Stack | not listed | 632mm | |
| Seat tube angle | not listed | 76.8° | |
| BB drop | not listed | 25mm | |
| BB height | not listed | 350mm | |
| Seat tube length | not listed | 420mm | |
| Head tube length | not listed | 105mm |
Differences are the Specialized Demo Race minus the Trek Session. Full charts: 2025 Trek Session, 2025 Specialized Demo Race.
Where each sits in its class
Trek SessionSpecialized Demo Race
AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted
Each bike is ranked against the other downhill bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Trek Session8 | Specialized Demo RaceRace |
|---|---|---|
| Frame | Trek Session 8 | not listed |
| Fork | RockShox BoXXer | Öhlins DH38 M.1 29 |
| Rear shock | Marzocchi Bomber | Öhlins TTX22 M.2 |
| Cassette | SRAM GX DH | SRAM X01 DH |
| Chain | SRAM PC 1110 | SRAM PC-1130 |
| Crankset | TruVativ Descendant GX | SRAM X01 DH |
| Chainring | TruVativ 34 | not listed |
| Pedals | Wellgo BO-87B | not listed |
| Wheelset | Bontrager Line DH 30 | not listed |
| Tire | Bontrager G5 Team Issue, Bontrager G5 | Specialized Cannibal |
| Brake | SRAM Code RSC | SRAM Maven Ultimate |
| Handlebar | Bontrager Line | Renthal Fatbar 35 |
| Stem | Bontrager Line | Renthal Integra |
| Seatpost | Bontrager Rhythm Elite | not listed |
| Saddle | Bontrager Arvada | Specialized Henge DH |
| Shifter | not listed | SRAM X01 DH |
| Derailleur | not listed | SRAM X01 DH |
| Bottom bracket | not listed | SRAM DUB |
| Hub | not listed | DT Swiss 350 |
| Rim | not listed | Roval Traverse |
| Grips | not listed | Deity Lockjaw |
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