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Rocky Mountain Thunderbolt Alloy 50

Rocky Mountain Thunderbolt Alloy 50
  • Color: Purple/Black
  • Color: Red/Black
$3,014.10 - $3,349.00
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This item is not permitted to be shipped, however it can be purchased online and picked up at your convenience.


With the Thunderbolt Alloy 50, Rocky Mountain pushes the rear travel to 130mm, increases stiffness, lowers the rate curve slightly, and gives the frame a host of next-generation features—but keeps its playful geometry and wide-range of RIDE-9 adjustments. The Thunderbolt is at home on technical climbs, powering through rough stuff, and popping off every trail feature you lay eyes on. Fox keeps your tires gripping the course with a DPS EVOL shock and 34 Performance fork, lightweight hardware that can damp with the heavyweights.

Speed becomes a natural extension of your body as you crank up the Shimano XT 1x11-speed drivetrain, with impressive climbing prowess and a fast top-end, all driven by a Race Face crankset. Maxxis DHR II tires keep you glued to the trail with race-winning traction, and Shimano hydraulic brakes give you peace of mind that braking is under control so you can focus on carrying speed all the way to the finish line. The Race Face dropper post gives you an edge on both ascents and descents, ensuring your body is always in the right position for the job.

The RIDE-9 adjustment system allows riders to quickly fine-tune their geometry and suspension with a pair of Allen keys. Nine configurations are possible thanks to two interlocking chips. Position 1 geometry configuration shown below.

Rocky Mountain Thunderbolt geometry chart


Frame FORM Alloy. Full Sealed Cartridge Bearings. Press Fit BB. Internal Cable Routing. ISCG05 Tabs. RIDE-9 Adjustable Geometry + Suspension Rate. FORM Alloy Rear Triangle
Fork Fox 34 Float Performance 130mm
Headset FSA Orbit NO.57E
Rear Shock Fox Float DPS EVOL Performance
Axles Front: 110 x 15mm
Rear: 148 x 12mm
Rims/Wheels Sun Helix TR25 SL
Hubs Rocky Mountain Sealed Boost 15mm / DT Swiss 370 Boost 148mm
Spokes WTB 2.0-1.8
Tires Front: Maxxis Minion DHR II Folding 27.5 x 2.3
Rear: Maxxis Minion DHR II Folding 27.5 x 2.3
Crankset Race Face Aeffect Cinch
Chainrings 32T
Bottom Bracket Race Face BB92 24mm
Chain KMC X11-1
Rear Derailleur Shimano XT
Cassette/Rear Cogs Shimano SLX 11-46T
Shifters Shimano SLX
Handlebars Rocky Mountain AM 760mm
Tape/Grips Rocky Mountain Lock On Light
Stem Rocky Mountain AM
Brakes Shimano MT500
Saddle WTB Volt Race
Seat Post Race Face Aeffect Dropper 30.9mm

* Subject to change without notice.


Passage nord-est

Part Numbers

Option UPC MPN Store SKU
Purple/Black / X-Small 770416240962 CRF909151
Purple/Black / Small 770416240979 CRF909161
Purple/Black / Medium 770416240986 CRF909181 18178
Purple/Black / Large 770416240993 CRF909191 18269
Purple/Black / X-Large 770416241006 CRF909201
Red/Black / X-Small 770416241112 CRF909152
Red/Black / Small 770416241129 CRF909162
Red/Black / Medium 770416241136 CRF909182
Red/Black / Large 770416241143 CRF909192
Red/Black / X-Large 770416241150 CRF909202