Hydra Diode
Forestal
Downhill
Hydra Diode is a carbon electric downhill mountain bike (2024), from Forestal, in the Hydra series. It is a strong match for riders who want a more active, performance-leaning off-road feel, with a sporty, active riding position, while being more at home in gravity-focused bike park riding. Standout strengths from the metrics include capable suspension support for rougher terrain, balanced, versatile speed for everyday riding, and all-round climbing capability rather than a narrow specialty. The main trade-off is a firmer ride feel than comfort-first options and a value score that depends more on priorities than pure price efficiency. Add this bike to compare on MatchBikes.com and see how it stacks up against similar downhill models.
Rating

Score Summary
Performance
Built for speed and efficiency
Fit
Dialed-in Fit & Comfort
Value
Battery
Specifications
General
Frame
Drivetrain
Wheels
Brakes
Cockpit
Seat
E-Bike Components
Geometry
| Measurement | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.421 mm | 1.354 mm | 1.302 mm | 1.276 mm |
| Bottom Bracket Height | 346 mm | 346 mm | 346 mm | 346 mm |
| Front Center | 743 mm | 770 mm | 799 mm | 825 mm |
| Rake | 42 mm | 42 mm | 42 mm | 42 mm |
| Trail | 123 mm | 123 mm | 123 mm | 123 mm |
| Stack | 611 mm | 616 mm | 625 mm | 638 mm |
| Reach | 430 mm | 455 mm | 480 mm | 500 mm |
| Top Tube Length | 577 mm | 603 mm | 633 mm | 657 mm |
| Seat Tube Angle | 76.6 ° | 76.6 ° | 76.6 ° | 76.6 ° |
| Seat Tube Length | 415 mm | 430 mm | 465 mm | 500 mm |
| Head Tube Angle | 65.5 ° | 65.5 ° | 65.5 ° | 65.5 ° |
| Head Tube Length | 95 mm | 100 mm | 110 mm | 125 mm |
| Chainstay Length | 435 mm | 435 mm | 445 mm | 445 mm |
| Wheelbase | 1176 mm | 1203 mm | 1242 mm | 1268 mm |
| Bottom Bracket Drop | 30 mm | 30 mm | 30 mm | 30 mm |
| Wheels | 29" | 29" | 29" | 29" |
| Rider Min Height | 158 cm | 168 cm | 178 cm | 186 cm |
| Rider Max Height | 171 cm | 180 cm | 189 cm | 199 cm |




























































