2026 Nukeproof Reactor 290 Alloy Pro SMALL
Build
700C/29 in × 2.4 in
Insights
Somewhat upright stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of Nukeproof Reactor
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Bar type unusual for category
This: Moto/Klunker/Riser Bar
Category: Flat Bar
vs full-suspension trail mtb bikesCategory: Flat Bar
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 620.2mm |
| Reach | 435mm |
| Stack to Reach Ratio | 1.43:1 |
| Seat Tube Length, C-T | 380mm |
| Top Tube Length, Effective/Horizontal Center | 578.2mm |
| Top Tube Slope | 25deg |
| Head Tube Angle | 64.57deg |
| Seat Tube Angle | 70.57deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 0mm |
| Bottom Bracket Height | 372mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 440mm |
| Front-Center | 758.8mm |
| Front-Center Horizontal | 758.8mm |
| Wheelbase | 1198.8mm |
| Fork Offset/Rake | 42mm |
| Fork Length (Axle-To-Crown) | 561mm |
| Trail | 130.4mm very high |
| Mechanical Trail | 117.8mm |
| Wheel Flop | 50.6mm |
| Standover Height | 745mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 216.8mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 202mm |
290 Alloy Pro Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 743.9mm |
| Bike Length with Tires | 1942.7mm |
| Suspension Type | Full suspension |
| Bar Type | Moto/Klunker/Riser Bar |
| Fork Travel | 150mm |
| Rear Travel | 140mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:www.nukeproof.com