2017 Trek Session 9.9 DH 27.5 Race Shop Limited vs 2018 Specialized Demo 8 Frameset
The M is the Specialized Demo 8 Frameset size closest to your M Trek Session 9.9 DH 27.5 Race Shop Limited. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Specialized Demo 8 Frameset
Compared with the Trek Session 9.9 DH 27.5 Race Shop Limited in M, the Specialized Demo 8 Frameset in M places the top of the head tube 11 mm higher and 12 mm further forward, relative to the bottom bracket. Its wheelbase is 3 mm longer, which can contribute to stability at speed.
- Frame stack
- +11 mm
- Higher front end
- Frame reach
- +12 mm
- Longer frame reach
- Wheelbase
- +3 mm
- Longer: steadier at speed
- Head angle
- −0.7°
- Slacker: calmer steering
- Chainstays
- −13 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Trek Session 9.9 DH 27.5 Race Shop Limited numbers we have for size M are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Session 9.9 DH 27.5 Race Shop Limited M | Specialized Demo 8 Frameset M | Difference |
|---|---|---|---|
| Reach | 408 | 420mm | +12 mm |
| Stack | 603 | 614mm | +11 mm |
| Head tube angle | 64.2° | 63.5° | −0.7° |
| Effective top tube | 590 | 596mm | +6 mm |
| Chainstay length | 443 | 430mm | −13 mm |
| Wheelbase | 1205 | 1208mm | +3 mm |
| BB drop | 9 | 12mm | +3 mm |
| BB height | 364 | 342mm | −22 mm |
| Standover | 793 | 698mm | −95 mm |
| Seat tube length | 426 | 367mm | −59 mm |
| Head tube length | 115 | 105mm | −10 mm |
| Seat tube angle | not listed | 74° | |
| Fork length | not listed | 590mm |
Differences are the Specialized Demo 8 Frameset minus the Trek Session 9.9 DH 27.5 Race Shop Limited. Full charts: 2017 Trek Session 9.9 DH 27.5 Race Shop Limited, 2018 Specialized Demo 8 Frameset.
Where each sits in its class
Trek Session 9.9 DH 27.5 Race Shop LimitedSpecialized Demo 8 Frameset
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 Session 9.9 DH 27.5 Race Shop Limited9.9 DH 27.5 Race Shop Limited | Specialized Demo 8 FramesetS-Works Frameset |
|---|---|---|
| Frame | Trek OCLV | not listed |
| Fork | Fox 40 Factory | not listed |
| Shifter | Shimano Saint | not listed |
| Derailleur | Shimano Saint | not listed |
| Cassette | Shimano Ultegra | not listed |
| Chain | Shimano XTR | not listed |
| Crankset | Shimano Saint | not listed |
| Pedals | Wellgo MG-1 | not listed |
| Wheelset | DT Swiss FR1950 Gravity Classic | not listed |
| Tire | Bontrager G4 Team Issue | not listed |
| Brake | Shimano Saint | not listed |
| Handlebar | Bontrager Line | not listed |
| Stem | Race Face Atlas | not listed |
| Seatpost | Bontrager Rhythm Elite | not listed |
| Saddle | Bontrager Evoke 3 | not listed |
| Rear shock | not listed | Öhlins TTX |
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