Mach 4 SL

Mach 4 SL

Gravity Defying Cross Country Rocket Ship


The all-new Mach 4 SL is designed to let World Cup level athletes capitalize on every inch of increasingly technical courses and generate speed where others hesitate. Our engineers have pushed the boundaries in every conceivable metric of cross country performance. It’s the lightest, fastest 100mm travel XC race bike we’ve ever developed. Go ahead, turn yourself inside out and leave it all out on the race course because the new Mach 4 SL leaves nothing on the table.


  • Frame
  • Fork
    Fox Factory Stepcast 34 29" w/ Remote, 44mm offset, FIT4 - 120mm
  • Rear Shock
    Fox Factory DPS
  • Rear Derailleur
    Shimano XTR M9100 SGS 12-Speed
  • Shifter
    Shimano XT M8100 ISPEC EV 12-Speed
  • Crank
    Race Face Æffect R 34t
  • Cassette
    Shimano XT M8100 10-51t
  • Chain
    Shimano CN-M8100 12-Speed
  • Brakes
    Shimano XT M8100 2-piston
  • Rotors
    Shimano XT CenterLock - 160mm Shimano XT CenterLock - 160mm
  • Seatpost
    Fox Transfer Factory Series 100mm (XS), 125mm (SM-LG), 150mm (XL)
  • Saddle
    Phoenix WTB Pro Volt (Narrow Width)
  • Handlebar
    Phoenix Team Flat Carbon - 760mm
  • Stem
    Phoenix Team XC/Trail
  • Grips
    Phoenix Factory Lock-On
  • Headset
    Pivot Precision Sealed Integrated Cartridge
  • Wheels
    DT Swiss M1700 w/ DT Swiss 350 hub & 36t Star Ratchet 25mm - 29" 15x110 F/12x148 R
  • Wheel Size
  • Tires
    Maxxis Ardent Race 29" x 2.2" TR, EXO, 120 TPI Maxxis Ardent Race 29" x 2.2" TR, EXO, 120 TPI
  • Miscellaneous
    Pro XT/XTR w/ 120mm Fork - 29"
More Info
Mountain bike pricing and specifications are ever changing. This info was last updated August 16, 2021.
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