2015 Specialized Demo I vs 2015 Trek Session 9.8 Park 26
The L is the Trek Session 9.8 Park 26 size closest to your Med (High) Specialized Demo I. 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 Trek Session 9.8 Park 26
Compared with the Specialized Demo I in Med (High), the Trek Session 9.8 Park 26 in L places the top of the head tube 24 mm lower and 4 mm further forward, relative to the bottom bracket. Its wheelbase is 27 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −24 mm
- Lower front end
- Frame reach
- +4 mm
- Longer frame reach
- Wheelbase
- −27 mm
- Shorter: quicker to change direction
- Head angle
- −0.1°
- About the same head angle
- Chainstays
- −12 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Specialized Demo I numbers we have for size Med (High) are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Demo I Med (High) | Trek Session 9.8 Park 26 L | Difference |
|---|---|---|---|
| Reach | 419mm | 423 | +4 mm |
| Stack | 613mm | 589 | −24 mm |
| Head tube angle | 64.3° | 64.2° | −0.1° |
| Seat tube angle | not listed | not listed | |
| Effective top tube | 573mm | 607 | +34 mm |
| Chainstay length | 430mm | 418 | −12 mm |
| Wheelbase | 1207mm | 1180 | −27 mm |
| BB height | 357mm | 364 | +7 mm |
| Standover | 721mm | 754 | +33 mm |
| Seat tube length | 393mm | 440 | +47 mm |
| BB drop | not listed | 21 | |
| Head tube length | not listed | 125 |
Differences are the Trek Session 9.8 Park 26 minus the Specialized Demo I. Full charts: 2015 Specialized Demo I, 2015 Trek Session 9.8 Park 26.
Where each sits in its class
Specialized Demo ITrek Session 9.8 Park 26
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 | Specialized Demo I8 I | Trek Session 9.8 Park 269.8 Park 26 |
|---|---|---|
| Fork | RockShox BoXXer RC | RockShox BoXXer |
| Rear shock | Fox Van RC | not listed |
| Shifter | SRAM X7 | SRAM X-7 |
| Derailleur | SRAM X-9 | SRAM X-9 |
| Cassette | SRAM PG-1030 | SRAM PG-1050 |
| Chain | SRAM 1031 | SRAM 1071 |
| Crankset | SRAM Descendant | TruVativ Descendant DH |
| Pedals | Specialized Bennies | Wellgo BO-87B |
| Tire | Specialized Butcher DH, Specialized Slaughter DH | Bontrager G4 Team Issue |
| Hub | Specialized Hi Lo | not listed |
| Brake | SRAM Guide R | Avid Code |
| Handlebar | Specialized Demo | Bontrager Rhythm Elite |
| Stem | Specialized P.Series | Bontrager Rhythm |
| Grips | Specialized Sip Grip | not listed |
| Saddle | Specialized Phenom Comp | Bontrager Evoke 2 |
| Frame | not listed | Trek OCLV |
| Wheelset | not listed | DT Swiss FR2150 |
| Headset | not listed | FSA NO.57E |
| Seatpost | not listed | Bontrager Rhythm Elite |
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