Nukeproof Mega Alloy 297 / 290 - Sram Eagle 90

2025 MountainEnduro Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €4,499 Last known price
Travel: 170 / 160 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 30t / 10–52t
Gear range: 520%
Weight: 16.6 kg 36.6 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 159–169
MD 167–177
LG 175–185
XL 183–193
XXL 191–201

Components

18 of 21 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Nukeproof Mega V4 290 Alloy, 160mm Travel, custom triple butted hydro-formed tube set, internal cable routing, ISCG 05 mount, Enduro Bearings, Threaded 73mm BB, Boost 148mm rear axle spacing, 3D contoured Rubber frame protection. Not identified

Suspension

2 parts

Drivetrain

7 parts

Bottom bracket

BSA, 73mm, threaded Not identified
Cassette
- SRAM 10–52t
Chain
- SRAM GX
Chain guide
- Nukeproof
ISCG-05
Crankset
- SRAM 30t
Rear derailleur
- SRAM Eagle AXS S500 12 speeds
Shifters
- SRAM

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

7 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size LG

Table

Reach 475mm

Stack 639mm

Wheelbase 1246mm

Head angle 64.0°

Seat angle 78.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	430	455	475	495	515
Stackmm	621.16	621.16	639.22	648.24	657.27
Top tube lengthmm	567.7	592.71	610.87	632.79	654.71
Seat tube lengthmm	380	410	440	470	500
Head tube lengthmm	100	100	120	130	140
Head tube angle	64°	64°	64°	64°	64°
Seat tube angle	77.5°	77.5°	78°	78°	78°
Chainstay lengthmm	435	435	435	440	440
Wheelbasemm	1192.5	1217	1246.1	1275.39	1299.7
Front centermm	758.5	783.5	812.11	836.42	860.72
Bottom bracket dropmm	30	30	30	30	30
Bottom bracket heightmm	345	345	345	345	345
Standover heightmm	721.75	720.28	721.3	720.73	726.77
Fork rakemm	42	42	42	42	42
Trailmm	132.33	132.33	132.33	132.33	132.33
Stack/reach ratio	1.45	1.37	1.35	1.31	1.28
Suspension and parts
Front travelmm	170	170	170	170	170

Not published by the manufacturer: Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 16.6 kg

36.6 lb

Suspension

Suspension configuration: Full suspension
Front travel: 170 mm
Rear travel: 160 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 52
Lowest gear: 16.7 in
Highest gear: 87.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

170 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,419 bicycles with this information
Coverage: 97.5% of the class

Rear travel

160 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,106 bicycles with this information
Coverage: 76.0% of the class

Shifting

Mechanical

477 of 1,455 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,455 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.4 km/h
Highest gear: 33.3 km/h

Total gear range 520%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 16.7–87.0 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds

Differences across 2025 builds
Specification	This bicycle Nukeproof Mega Alloy 297 / 290 - Sram Eagle 90	Nukeproof Mega Carbon 297 / 290 SRAM Transmission GX
Frame
Frame material	Aluminum	Carbon
Bicycle weight	16.6 kg	15.7 kg
Suspension
Rear travel	160 mm	165 mm
Drivetrain
Smallest chainring	30	32
Largest chainring	30	32
Lowest gear	16.7 in	17.9 in
Highest gear	87.0 in	92.8 in
Cockpit
Shifting	Mechanical	Electronic
Derailleur hanger	Not informed	UDH