2018 Specialized Demo 8 Frameset vs 2019 Specialized Demo Alloy 27.5
The Specialized Demo Alloy 27.5 size closest to your SHORT is the SHORT. Compare the SHORT instead
What changes on the Specialized Demo Alloy 27.5
Compared with the Specialized Demo 8 Frameset in SHORT, the Specialized Demo Alloy 27.5 in LONG places the top of the head tube at about the same height and 45 mm further forward, relative to the bottom bracket. Its wheelbase is 45 mm longer, which can contribute to stability at speed.
- Frame stack
- ±0 mm
- About the same height
- Frame reach
- +45 mm
- Longer frame reach
- Wheelbase
- +45 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Demo 8 Frameset, SHORTSpecialized Demo Alloy 27.5, LONGDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Demo 8 Frameset SHORT | Specialized Demo Alloy 27.5 LONG | Difference |
|---|---|---|---|
| Reach | 395mm | 440mm | +45 mm |
| Stack | 614mm | 614mm | ±0 mm |
| Head tube angle | 63.5° | 63.5° | ±0.0° |
| Seat tube angle | 74° | 74° | ±0.0° |
| Effective top tube | 571mm | 616mm | +45 mm |
| Chainstay length | 430mm | 430mm | ±0 mm |
| Wheelbase | 1183mm | 1228mm | +45 mm |
| BB drop | 12mm | 12mm | ±0 mm |
| BB height | 342mm | 342mm | ±0 mm |
| Standover | 698mm | 698mm | ±0 mm |
| Seat tube length | 367mm | 419mm | +52 mm |
| Fork length | 590mm | not listed | |
| Head tube length | 105mm | 105mm | ±0 mm |
Differences are the Specialized Demo Alloy 27.5 minus the Specialized Demo 8 Frameset. Full charts: 2018 Specialized Demo 8 Frameset, 2019 Specialized Demo Alloy 27.5.
Where each sits in its class
Specialized Demo 8 FramesetSpecialized Demo Alloy 27.5
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 8 FramesetS-Works Frameset | Specialized Demo Alloy 27.5Alloy 27.5 |
|---|---|---|
| Rear shock | Öhlins TTX | Fox Van RC |
| Fork | not listed | RockShox BoXXer RC 27.5 |
| Shifter | not listed | SRAM GX |
| Derailleur | not listed | SRAM GX |
| Cassette | not listed | SRAM PG-1030 |
| Chain | not listed | SRAM PC-1031 |
| Crankset | not listed | SRAM Descendant |
| Tire | not listed | Specialized Butcher |
| Brake | not listed | SRAM Guide RE |
| Stem | not listed | Specialized two-piece |
| Grips | not listed | Specialized Sip Grip |
| Saddle | not listed | Specialized Phenom Comp |
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