Reactor 290 Alloy Frame
Nukeproof
Trail
Reactor 290 Alloy Frame is an alloy trail mountain bike (2024), by Nukeproof, in the Reactor series. This bike is aimed at riders who want a more active, performance-leaning off-road feel, leaning toward a sporty, active riding position, while being well suited to natural trails and mixed off-road terrain. Based on the metrics, key strengths are strong value-for-money versus many similar bikes, strong climbing friendliness for sustained uphill riding, and strong speed potential on smoother terrain. That said, the trade-off to keep in mind is a firmer ride feel than comfort-first options. Add this bike to compare on MatchBikes.com and see how it stacks up against similar trail models.
Rating

Score Summary
Performance
Built for speed and efficiency
Fit
Dialed-in Fit & Comfort
Value
Specifications
General
Frame
Drivetrain
Geometry
| Measurement | Reactor 290 140mm Fork (Alloy) | Reactor 290 150mm Fork (Alloy) | Reactor 290 140mm Fork (Alloy) | Reactor 290 150mm Fork (Alloy) | Reactor 290 140mm Fork (Alloy) | Reactor 290 150mm Fork (Alloy) |
|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.364 mm | 1.386 mm | 1.292 mm | 1.312 mm | 1.216 mm | 1.234 mm |
| Bottom Bracket Height | 336 mm | 339 mm | 336 mm | 339 mm | 336 mm | 339 mm |
| Front Center | 762.5 mm | 766.5 mm | 792 mm | 796 mm | 830 mm | 834 mm |
| Rake | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Trail | 111 mm | 115 mm | 112 mm | 117 mm | 112 mm | 117 mm |
| Stack | 615 mm | 618.4 mm | 620 mm | 623.5 mm | 625 mm | 628.7 mm |
| Reach | 451 mm | 446.3 mm | 480 mm | 475.4 mm | 514 mm | 509.5 mm |
| Top Tube Length | 610 mm | 611.4 mm | 640 mm | 641.2 mm | 675 mm | 676.3 mm |
| Seat Tube Angle | 75.5 ° | 75.1 ° | 75.5 ° | 75.1 ° | 75.5 ° | 75.1 ° |
| Seat Tube Length | 420 mm | 420 mm | 458 mm | 458 mm | 508 mm | 508 mm |
| Head Tube Angle | 66 ° | 65.5 ° | 66 ° | 65.5 ° | 66 ° | 65.5 ° |
| Head Tube Length | 105 mm | 105 mm | 110 mm | 110 mm | 115 mm | 115 mm |
| Chainstay Length | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
| Wheelbase | 1205 mm | 1209 mm | 1235 mm | 1239 mm | 1271 mm | 1275 mm |
| Bottom Bracket Drop | 33 mm | 30 mm | 33 mm | 30 mm | 33 mm | 30 mm |
| Standover Height | 736 mm | 739 mm | 744 mm | 747 mm | 769 mm | 772 mm |
| Front Travel | 150 mm | 160 mm | 150 mm | 160 mm | 150 mm | 160 mm |
| Wheels | 29" | 29" | 29" | 29" | 29" | 29" |




























































