2026 Commencal Supreme DH V5 RockShox vs 2024 Specialized Demo Race
The S4 is the Specialized Demo Race size closest to your XL Low Commencal Supreme DH V5 RockShox. 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 Race
Compared with the Commencal Supreme DH V5 RockShox in XL Low, the Specialized Demo Race in S4 places the top of the head tube 17 mm lower and 38 mm further back, relative to the bottom bracket. Its wheelbase is 47 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −17 mm
- Lower front end
- Frame reach
- −38 mm
- Shorter frame reach
- Wheelbase
- −47 mm
- Shorter: quicker to change direction
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −6 mm
- Shorter: livelier
The two frames
Commencal Supreme DH V5 RockShox, XL LowSpecialized Demo Race, S4Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Commencal Supreme DH V5 RockShox XL Low | Specialized Demo Race S4 | Difference |
|---|---|---|---|
| Reach | 504 mm | 466mm | −38 mm |
| Stack | 649 mm | 632mm | −17 mm |
| Head tube angle | 63.3° | 62.8° | −0.5° |
| Seat tube angle | 75.7° | 76.8° | +1.1° |
| Effective top tube | 669 mm | not listed | |
| Chainstay length | 454 mm | 448mm | −6 mm |
| Wheelbase | 1331 mm | 1284mm | −47 mm |
| BB drop | -2.5 mm | not listed | |
| Seat tube length | 370 mm | 420mm | +50 mm |
| Fork length | 612 mm | not listed | |
| Head tube length | 112 mm | 105mm | −7 mm |
Differences are the Specialized Demo Race minus the Commencal Supreme DH V5 RockShox. Full charts: 2026 Commencal Supreme DH V5 RockShox, 2024 Specialized Demo Race.
Where each sits in its class
Commencal Supreme DH V5 RockShoxSpecialized Demo Race
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 | Commencal Supreme DH V5 RockShoxRockShox | Specialized Demo Race |
|---|---|---|
| Frame | Commencal SUPREME DH V5 | not listed |
| Fork | RockShox BoXXer Ultimate | not listed |
| Rear shock | RockShox Vivid Ultimate | not listed |
| Shifter | SRAM GX DH | not listed |
| Derailleur | SRAM GX Eagle | not listed |
| Cassette | SRAM GX DH | not listed |
| Chain | SRAM PC-1130 | not listed |
| Crankset | SRAM Descendant DH | not listed |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | DT Swiss F 1900 | not listed |
| Tire | Schwalbe Tacky Chan, Schwalbe Magic Mary | not listed |
| Rim | DT Swiss F1900 Classic | not listed |
| Brake | SRAM Maven Bronze | not listed |
| Rotor | SRAM HS2 | not listed |
| Handlebar | ALPHA | not listed |
| Stem | Ride Alpha DH | not listed |
| Grips | Ride Alpha Mushroom | not listed |
| Headset | Acros ZS56 ZS56 | not listed |
| Seatpost | Ride Alpha 31.6mm 250mm | not listed |
| Saddle | fizik Gravita Alpaca X5 | not listed |
| Accessory | e*thirteen LG1 | not listed |
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