With positive and negative reviews, the Specialized Rockhopper Expert Disc 29 Single-Speed 2009 Mountain Bike is overall a nice ride. 2009 Specialized Rockhopper Expert Disc 29 Single-Speed Mountain Bike features Specialized M4 manipulated alloy frame, 20t Cr-Mo cog cassette, and Tektro Auriga Comp hydraulic disc brake set. Sadly, some have complained about the strengths of the brakes, but the single speed 29er is still nice. Retail is $1100.

Specialized Rockhopper Expert Disc 29 Single-Speed 2009 Mountain Bike

(29 votes, average: 3.38 out of 5)

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Specialized Rockhopper Expert Disc 29 Single-Speed 2009 Mountain Bike Frameset
Frame: Specialized M4 manipulated alloy frame, 29″ geometry, fully butted, ORE DT, 2-piece forged adjustable dropouts w/ SShanger, disc only
Rear Shock: n/a
Fork: Rock Shox Tora Race 29er, 80mm, 32mm Cr-Mo stanchions, magnesium lower, Solo Air spring w/ Motion Control damper, LO and rebound adj., disc only

Specialized Rockhopper Expert Disc 29 Single-Speed 2009 Mountain Bike Wheels
Rims: Specialized RHD 29″, double wall disc, pinned w/ eyelets, 28/32h
Front Hub: Specialized Hi Lo, forged alloy, double sealed, ground race, 28h, QR
Rear Hub: Specialized, cassette, forged alloy, double sealed, ground race, QR, 32h w/ conversion kit for single speed cog
Spokes: 1.8mm (15g) stainless
Front Tire: Specialized Fast Trak Control, 29×2.0″, 60TPI, aramid bead, 2Bliss ready
Rear Tire: Specialized Fast Trak Control, 29×2.0″, 60TPI, aramid bead, 2Bliss ready
Inner Tubes: Specialized schraeder valve

Specialized Rockhopper Expert Disc 29 Single-Speed 2009 Mountain Bike Drivetrain
Front Derailleur: n/a
Rear Derailleur: n/a
Shift Levers: n/a
Cassette: 20t Cr-Mo cog, 1/2′ x 3/32″ for casssette hub
Chain: KMC X9 w/ reuseable Missing Link
Crankset: Truvativ Fire-Ex, 2pc, forged alloy arms for GXP
Chainrings: 32A
Bottom Bracket: Truvativ GXP, Outboard cartridge bearings, 68mm x 118mm
Pedals: Alloy body and cage, 9/16″

Specialized Rockhopper Expert Disc 29 Single-Speed 2009 Mountain Bike Components
Saddle: Specialized Indie XC, Body Geometry, 143mm width, front and rear bumpers
Seatpost: Specialized alloy two bolt, micro adjust head, 30.9mm
Seat Binder: Specialized alloy w/ QR, brass washer
Stem: Specialized 3D forged, 4-bolt, 7 degree rise, 31.8mm clamp
Handlebars: Specialized butted alloy, 31.8mm, 25mm rise, 640mm wide, 8 degree back sweep, 8 degree up, 2.6mm thick
Grips: Specialized Enduro, dual compound Kraton, no flange, 131mm
Front Brake: Tektro Auriga Comp, hydraulic disc, dual piston w/ 160mm rotor
Rear Brake: Tektro Auriga Comp, hydraulic disc, dual piston w/ 160mm rotor
Brake Levers: Tektro Auriga Comp