Here are the specs on the Iron Horse . Specialized Hardrock or Iron Horse which one ????Frame: 6061 Aluminum HardtailSeatpost: Alloy Micro AdjustStem: Alloy, 25.4mmCrankset: FSA Dyna Drive, 42/32/22T AlloyBottom Bracket: FSA Power DriveBrakes: Hayes MX4 Mechanical Disc w/ 6” rotorWheelset: Hubs: Alloy, QR 32H; Rims: WTB MTX 2.4 DiscChain: KMC Z-72Fork: Marzocchi MZ Comp, 100mm travelHandlebar: MTB Aluminum Riserbar, 620mm wide, 30mm rise, 25.4mm clamp diameterRear Shock: NATires: Ninja 26” x 2.10"Front Derailleur: Shimano FD-C050Rear Derailleur: Shimano RD-M410Shifters: Shimano STM405Cassette: SRAM PG-830, 11-34T, 8-speedLevers: Tektro RS360AHeadset: Threadless Steel, 1 1/8”Pedals: Wellgo B-81 Alloy PlatformGrips/Tape: WTBSaddle: WTB Speed V Sport SE