2026 Nukeproof Reactor 290 Alloy Pro - Bike Insights

Somewhat upright stack and reachvs category

Suspension sag unknown

Geometry may mis-represent actual riding geometry

Bar type unusual for category

This: Moto/Klunker/Riser Bar
Category: Flat Bar

Average stack and reachvs category

Suspension sag unknown

Geometry may mis-represent actual riding geometry

Bar type unusual for category

This: Moto/Klunker/Riser Bar
Category: Flat Bar

Average stack and reachvs category

Suspension sag unknown

Geometry may mis-represent actual riding geometry

Bar type unusual for category

This: Moto/Klunker/Riser Bar
Category: Flat Bar

Average stack and reachvs category

Suspension sag unknown

Geometry may mis-represent actual riding geometry

Bar type unusual for category

This: Moto/Klunker/Riser Bar
Category: Flat Bar

Average stack and reachvs category

Suspension sag unknown

Geometry may mis-represent actual riding geometry

Bar type unusual for category

This: Moto/Klunker/Riser Bar
Category: Flat Bar

	SMALL	MEDIUM	LARGE	X-LARGE	XX-LARGE
Stack	620.2mm	629.3mm	638.3mm	647.3mm	656.3mm
Reach	435mm	460mm	480mm	500mm	520mm
Stack to Reach Ratio	1.43:1	1.37:1	1.33:1	1.29:1	1.26:1
Seat Tube Length, C-T	380mm	410mm	440mm	470mm	500mm
Top Tube Length, Effective/Horizontal Center	578.2mm	605.3mm	621.5mm	643.5mm	665.5mm
Top Tube Slope	25deg	22.1deg	19.6deg	17.3deg	15.1deg
Head Tube Angle	64.57deg	64.57deg	64.57deg	64.57deg	64.57deg
Seat Tube Angle	70.57deg	70.57deg	70.57deg	70.57deg	70.57deg
Head Tube Length	100mm	110mm	120mm	130mm	140mm
Bottom Bracket Drop	0mm	0mm	0mm	—	0mm
Bottom Bracket Height	372mm	372mm	372mm	—	372mm
Chainstay Length	440mm	440mm	445mm	445mm	445mm
Chainstay Length Horizontal	440mm	440mm	445mm	—	445mm
Front-Center	758.8mm	788.1mm	812.4mm	836.7mm	861mm
Front-Center Horizontal	758.8mm	788.1mm	812.4mm	—	861mm
Wheelbase	1198.8mm	1228.1mm	1257.4mm	1281.7mm	1306mm
Fork Offset/Rake	42mm	42mm	42mm	42mm	42mm
Fork Length (Axle-To-Crown)	561mm	561mm	561mm	561mm	561mm
Trail	130.4mm very high	130.4mm very high	130.4mm very high	130.4mm very high	130.4mm very high
Mechanical Trail	117.8mm	117.8mm	117.8mm	117.8mm	117.8mm
Wheel Flop	50.6mm	50.6mm	50.6mm	50.6mm	50.6mm
Standover Height	745mm	750mm	755mm	760mm	765mm
Tire to Pedal Spindle	216.8mm 170 mm cranks	246.1mm 170 mm cranks	270.4mm 170 mm cranks	294.7mm 170 mm cranks	319mm 170 mm cranks
Pedal Spindle to Ground Clearance	202mm 170 mm cranks	202mm 170 mm cranks	202mm 170 mm cranks	— 170 mm cranks	202mm 170 mm cranks

	SMALL	MEDIUM	LARGE	X-LARGE	XX-LARGE
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	2.4in	2.4in	2.4in	2.4in	2.4in
Tire Outer Diameter	743.9mm	743.9mm	743.9mm	743.9mm	743.9mm
Bike Length with Tires	1942.7mm	1972mm	2001.3mm	2025.6mm	2049.9mm

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale

Category Trend

Full-suspension Trail MTB

Source:www.nukeproof.com

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