Thunderbolt

With lightning quick agility, the Thunderbolt balances XC efficiency and trail capability.

Travel: 120mm (F) / 120mm (R)

Wheel Size: 27.5"

Intended Use: XC Trail

Named after its lightning quick agility, the 2015 Thunderbolt balances XC efficiency and trail capability. It is equally at home on long, technical climbs as it is flowy singletrack descents.

Short 422mm chainstays combined with a longer top tube and a relaxed head tube angle provide both responsiveness and control.

The new SMOOTHWALL™ carbon frame on Thunderbolt MSL models represents a major milestone for Rocky Mountain: by using our new PIPELOCK™ main pivot we have removed all traditional bearings from the frame. Combined with grease ports in key pivot locations, PIPELOCK™ results in a stiffer, lighter, and lower-maintenance bike.

*Please note: non-MSL models do not feature RIDE-9™. Click here for detailed geometry of non-MSL models.

Frame Geometry
xs
sm
md
lg
xl
  • TTH. Top Tube Length - HORZ (mm)
  • 540
    565
    590
    615
    645
  • TTL. Top Tube length - Actual (mm)
  • N/A
    N/A
    N/A
    N/A
    N/A
  • HTA. Head Tube Angle (deg)
  • 67.2 - 68.4
    67.2 - 68.4
    67.2 - 68.4
    67.2 - 68.4
    67.2 - 68.4
  • HTL. Head Tube length (mm)
  • 100
    110
    120
    130
    145
  • STA. Seat Tube Angle - Effective (deg)
  • 73.7 - 75.3
    73.7 - 75.3
    73.7 - 75.3
    73.7 - 75.3
    73.7 - 75.3
  • STL. Seat Tube length (mm)
  • 381
    419
    457
    483
    521
  • CSL. Chainstay Length (mm)
  • 422
    422
    422
    422
    422
  • BBD. Bottom bracket drop (mm)
  • 25.2 - 4.7
    25.2 - 4.7
    25.2 - 4.7
    25.2 - 4.7
    25.2 - 4.7
  • BBH. Bottom bracket height (mm)
  • N/A
    N/A
    N/A
    N/A
    N/A
  • R. Reach (mm)
  • 376 - 393
    398-415
    420 - 437
    443 - 460
    469 - 486
  • S. Stack (mm)
  • 544 - 552
    553 - 561
    562 - 570
    572 - 580
    586 - 594
  • SH. Standover Height (mm)
  • 696
    696
    696
    696
    696
  • WB. Wheelbase (mm)
  • 1073
    1100
    1126
    1152
    1184
  • FC. Front-Centre (mm)
  • N/A
    N/A
    N/A
    N/A
    N/A
  • FO. Fork Offset ()
  • N/A
    N/A
    N/A
    N/A
    N/A

* Not all sizes available in all markets