Rockhopper Comp Disc 29
Part No.  

Rockhopper Comp Disc 29

Part No.  22310
Rockhopper Comp Disc 29
Technical Specifications
FOR OVER TWO DECADES the Rockhopper has been the best hardtail for any rider looking for thrills and adventure over a wide variety of terrain. The Rockhopper's M4 alloy frame and premium specs deliver category-leading efficiency, value and dependable handling.
  • The Rockhopper Comp Disc 29’s M4 manipulated alloy frame features our 29er-specific geometry for a lower center of gravity and increased stability.
  • The 80mm-travel fork is designed for use with 29-inch wheels and features smooth coil-sprung travel, rebound and preload adjustments, plus lockout—making it tunable to any need.
  • The 3D-forged alloy stem is stiff and strong and features an oversized 31.8mm bar-clamp area for a solid steering connection.
  • The mechanical disc brakes are easy to adjust and maintain and give superb, controllable stopping power. The levers allow for powerful (when necessary) one-finger braking.
  • The medium cage rear derailleur gives reliable, precise gear changes.
  • The 8-speed trigger shifters offer quick shifts with the flick of a finger (or thumb).
  • The triple-chainring crankset utilizes Shimano’s Octalink-splined BB interface for highly efficient power transfer.
  • The high-volume Specialized Fast Trak LK Sport 26x2.0-inch tires have a reduced knob height for lower rolling resistance, without giving up an ounce of traction.
  • The Specialized XC saddle features Aramid side patches that hold up to rough treatment.

Technical Specifications

CHAIN KMC X8 w/ reuseable Missing Link
BOTTOM BRACKET Shimano BB-ES25, Octalink spline, cartridge bearings, 68mm x 118mm
CRANKSET Shimano FC-M36108, Octalink spline, replaceable rings
FRONT DERAILLEUR Shimano Altus, 34.9mm clamp, top swing
SHIFT LEVERS SRAM X-4, 8-speed trigger
CASSETTE SRAM PG-830, 8-speed, 11-32t
CHAINRINGS 42S x 32S x 22S
FORK RockShox Dart 3 SL for 29"" wheel, 80mm, alloy steerer, preload and rebound adj. w/ LO, 13/15"": standard spring, all others: ""stiff"" spring, disc only
FRONT HUB Specialized Hi Lo, forged alloy, double sealed, ground race, 28h
REAR HUB Specialized, forged alloy, double sealed, ground race, cassette, QR, 32h
INNER TUBES Specialized schraeder valve
SPOKES 1.8mm (15g) stainless
FRONT TIRE Specialized Fast Trak Sport, 29x2.0"", 60TPI, wire bead
RIMS Specialized RHD 29"", double wall disc, pinned w/ eyelets, 28/32h
REAR TIRE Specialized Fast Trak Sport, 29x2.0"", 60TPI, wire bead
SADDLE Specialized XC, Body Geometry, 143mm width, front and rear bumpers
SEATPOST Specialized alloy two bolt, micro adjust head, 30.9mm
STEM Specialized 3D forged, 4-bolt, 7 degree rise, 31.8mm clamp
HANDLEBARS Specialized alloy, 31.8mm, 25mm rise, 640mm wide, 8 degree back sweep, 8 degree up, 3mm thick
GRIPS Specialized Enduro, dual compound Kraton, no flange, 131mm
FRONT BRAKE Avid BB5, mechanical disc, caliper/adapter w/ 160mm G2 Clean Sweep rotor
BRAKE LEVERS Avid FR-5, alloy, two-finger, linear pull
REAR BRAKE Avid BB5, mechanical disc, caliper/adapter w/ 160mm G2 Clean Sweep rotor
PEDALS Steel cage, composite body, 9/16""
HEADSET Specialized 1-1/8"" threadless, loose ball
SEAT BINDER Specialized alloy w/ QR, brass washer
FRAME Specialized M4 Manipulated Alloy frame, 29"" geometry, fully butted, ORE DT, 2-piece forged adjustable dropouts, disc only


Geometry Chart

Rockhopper - Geometry

  15 17 19 21 23
Stem Length 60mm 75mm 75mm 90mm 90mm
Crank Length 170mm 175mm 175mm 175mm 175mm
Seatpost Length 350mm 350mm 400mm 400mm 400mm
Handlebar Width 640mm 640mm 640mm 640mm 640mm
Chainstay Length 442mm 442mm 442mm 442mm 442mm
Top Tube Length (Actual) 557mm 570mm 595mm 620mm 642mm
Top Tube Length (Horizontal) 570mm 595mm 625mm 650mm 670mm
Head Tube Angle - Low Setting 70.5° 70.5° 70.5° 70.5° 70.5°
Standover Height 700mm 770mm 800mm 835mm 875mm
Wheel Base 1067mm 1092mm 1122mm 1147mm 1169mm
Head Tube Height 90mm 90mm 100mm 120mm 140mm
Seat Tube Angle (Actual) - Low Setting 72° 72° 72° 72° 72°
Seat Tube Length - Center to Top 381mm 432mm 483mm 533mm 584mm
Seat Tube Angle (Effective) - Low Setting 74° 73.5° 73.5° 73.5° 73.5°
Bottom Bracket Height - Low Setting 299mm 299mm 299mm 299mm 299mm