Nukeproof Mega 290 Factory Bike

Since 1999 the infamous Megavalanche race, which starts from the highest point on Pic Blanc (3300m) above the village of Alpe D’Huez has been synonymous with all mountain riding and the highest level of true mountain bike racing.

Conceived originally in 2009 by the development team at Nukeproof in an attempt to build the perfect bike for this exact style of racing, the Mega was born. Now in its 4th evolution, the Mega is podium proven. It has tasted success with numerous national and international race wins to its name.

Designed to excel on the toughest enduro tracks; the gravity focused specification is designed to descend fast but maintain the pedalling efficiency for all-day epics.

Chassis Stiffness

For 2019 Nukeproof has focussed on the smallest details in order to improve an already podium proven chassis. Making the decision to commit to a dedicated 1x drivetrain configuration across all models, this enabled its engineers to utilise the space required for a front derailleur to increase the main pivot bearing placement ensuring that maximum stiffness is achieved. This additional stiffness prevents torsional flex under pedalling and helps the chassis track through high speed, rough terrain without compromise.

With stiffness in mind, Nukeproof took the time to incorporate the very latest Boost 148 rear axle spacing allowing it to spec much stiffer and stronger wheels both front and rear. All 2019 Nukeproof Mega models will come with new wider spaced Boost wheels and forks enabling the rider to feel even more confident on the increased capability of the bike.

Updated Race Geometry

With the demands of Enduro World Series racers progressing at a rapid rate, Nukeproof looked again at its geometry and saw an opportunity to tailor the frames to suit not only the fastest racers, but the growing tribe of riders that utilise its bikes every weekend whether that be shuttling runs at their favourite bike park, or heading off for an all-day epic in the local hills.

Slightly taller head tube lengths help tailor the cockpit feel to increase rider confidence, and a lengthened top tube on large and extra-large frames should help even the tallest of riders feel at home on the new Mega 290 Factory.

Metric Shock Sizing

The product development team work extremely closely with Nukeproof’s suspension partners and spent endless hours working on the perfect shock configuration for the new Mega. The perfect partnership between rear shock technology and frame kinematics has always been in the very root of its thought process when developing bikes and the new Mega with its brand new ’metric’ shock standard is no different. Designed to work perfectly with both air and coil sprung rear shocks, Nukeproof has addressed some of the areas that it felt could be improved on over the previous design such as hardware improvements and higher spec shocks across the board.

The new Mega 290 Factory utilises the incredible Fox Float X2 rear shock and hardware now comprises of a wider spaced 25mmx8mm front mount. This combination adds even more stiffness to the chassis through these more secure fixtures and the ‘Metric’ rear shock system with increased bushing overlap.

Click Here for the Fox Tuning guide for your suspension 


FrameNukeproof Mega 290 Alloy, custom triple butted hydro-formed tube set, custom tuned rear shock configuration, internal dropper seatpost cable routing, threaded bottom bracket, boost 148mm rear axle spacing, 3D contoured frame protection
ForkFox 36 Float Factory 160mm, FIT GRIP 2, Kashima, 51mm Offset
ShockFox Float X2 Factory Kashima, 2 Pos lever, 210x55 (Custom Tune)
Front Wheel DT Swiss E1700, Spline, 30mm, 29", 15x110mm
Rear Wheel DT Swiss E1700, Spline, 30mm, 29", Shimano Freehub, 148x12mm
TyresMichelin Wild Enduro 29" x 2.4, Gum -X TS TLR
CranksetShimano XT M8000, 11-Speed, 170mm, 30T, B148, 53mm chainline
DrivetrainShimano XT M8000, 11-Speed, SGS, Shadow Plus
Cassette Shimano SLX M7000, 11-46T
Chain GuideMRP 1x CS, 28-34T, ISCG-05, black
BrakesShimano XT M8000, finned resin pads
RotorsShimano RT86, 203mm Front/ 180mm Rear
HandlebarsNukeproof Horizon AL 800mm, 25mm
Grips Nukeproof Sam Hill Signature
StemNukeproof Horizon, 50mm, 31.8mm Clamp, black
SaddleNukeproof Horizon SL, Orange
SeatpostRockShox Reverb Stealth; S: 390mm length, 125mm drop; M: 440mm length, 150mm drop; L/XL: 480mm length, 170mm drop
HeadsetNukeproof Warhead, 44-56 IITS


Custom Triple Butted Hydroformed tube set. (Alloy Frames)
Rear Travel: 155mm
Custom Tuned rear shock configuration
Threaded Bottom Bracket
Internal Dropper Seatpost Cable Routing
Boost 148mm Rear axle Spacing
3D Contoured Frame Protection


KEY Small Medium Large Extra Large
Seat Tube381/15"420/16.5"458/18"508/20"
Effective Top Tube569.87mm594.87mm632.24mm678.42mm
Head Angle66666666
Head Tube100mm100mm110mm115mm
Seat Tube Angle75.575.575.575.5
Chain Stay450mm450mm450mm450mm
Bottom Bracket Drop-30.3mm-30.3mm-30.3mm-30.3mm
Fork Travel160mm160mm160mm160mm