Description:The Mach 4 SL is XC, distilled to its fastest form-engineered for efficiency, sharpened for precision and built to master the modern racecourse. Born from the crucible of World Cup XC and epic endurance racing, it balances a feathery build with an obsession for stiffness, control and efficiency.ForkFox Performance 34SL, 29", 44mm offset, GRIP - 120mmRear ShockFox Performance FloatWheelsetDT Swiss X1900 w/ DT Swiss 370 hub, 25mm - 29" 15x110 F / 12x148 RTiresFront: Maxxis Ardent Race 29" x 2.2" TR, EXO, 120 TPIRear: Maxxis Ardent Race 29" x 2.2" TR, EXO, 120 TPIDrivetrain- Crankset: SRAM Eagle 70 DUB, 32t- Rear Derailleur: SRAM Eagle 90 Mechanical Transmission, 12-Speed- Shifter: SRAM Eagle 90 Mechanical Transmission, 12-Speed- Cassette: SRAM XS-1270 Eagle Transmission, 10-52t- Chain: SRAM Eagle 70 Flattop, 12-SpeedBrakes- Brakes: SRAM DB8 Stealth 4-Piston- Rotors: SRAM Centerline 6-Bolt 180mm Front / 160mm RearCockpit- Handlebar: Phoenix Ride 20mm Rise Aluminum, 780mm- Stem: Phoenix Race XC/Trail, 60mm- Grips: Phoenix Factory Lock-OnComponents- Seatpost: JD/PIVOT YSP23GLS- Saddle: Phoenix WTB Race Volt (Narrow Width)- Headset: Pivot Precision Sealed Integrated CartridgeAdditional InfoBikes ship free in the continental US, arrive fully assembled, come set up tubeless with Stan's sealant, and include complimentary suspension setup based on rider weight. Want to customize any spec on this build? Reach out to us and we'll help set it up exactly how you want.