2014 Specialized Demo I vs 2015 Trek Session 9.8 Park 26
The M is the Trek Session 9.8 Park 26 size closest to your S 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 S, the Trek Session 9.8 Park 26 in M places the top of the head tube 5 mm lower and 12 mm further back, relative to the bottom bracket. Its wheelbase is 11 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- −12 mm
- Shorter frame reach
- Wheelbase
- −11 mm
- Shorter: quicker to change direction
- Head angle
- +0.2°
- About the same head angle
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
Only the Specialized Demo I is drawn. The Trek Session 9.8 Park 26 numbers we have for size M are missing the seat angle.
Geometry side by side
| Measurement | Specialized Demo I S | Trek Session 9.8 Park 26 M | Difference |
|---|---|---|---|
| Reach | 410mm | 398 | −12 mm |
| Stack | 593mm | 588 | −5 mm |
| Head tube angle | 64° | 64.2° | +0.2° |
| Seat tube angle | 62° | not listed | |
| Chainstay length | 421mm | 418 | −3 mm |
| Wheelbase | 1171mm | 1160 | −11 mm |
| BB height | 343mm | 364 | +21 mm |
| Standover | 717mm | 754 | +37 mm |
| Seat tube length | 394mm | 440 | +46 mm |
| Effective top tube | not listed | 582 | |
| 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: 2014 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 Select | RockShox BoXXer |
| Rear shock | Fox Van RC | not listed |
| Shifter | SRAM X-7 | SRAM X-7 |
| Derailleur | SRAM X-9 | SRAM X-9 |
| Cassette | Shimano Tiagra | SRAM PG-1050 |
| Chain | SRAM 1031 | SRAM 1071 |
| Crankset | SRAM Descendant | TruVativ Descendant DH |
| Pedals | Specialized Bennies | Wellgo BO-87B |
| Tire | Specialized Butcher DH | Bontrager G4 Team Issue |
| Hub | Specialized Hi Lo | not listed |
| Brake | Avid Elixir 7 | Avid Code |
| Handlebar | Specialized Demo | Bontrager Rhythm Elite |
| Grips | Specialized Sip Grip | not listed |
| Saddle | Specialized Phenom | Bontrager Evoke 2 |
| Frame | not listed | Trek OCLV |
| Wheelset | not listed | DT Swiss FR2150 |
| Stem | not listed | Bontrager Rhythm |
| Headset | not listed | FSA NO.57E |
| Seatpost | not listed | Bontrager Rhythm Elite |
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