Fourstroke 01 XT (2017)

World Champion full-suspension

The Fourstroke is one of the very few full-suspension mountain bikes to win the XCO World Championships. That alone sets it apart as an outstanding race bike.

R99,000.00 R70,000.00

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Description

The combination of our Big Wheel Concept (BWC) geometry and Advanced Pivot System (APS) suspension design makes for an incredibly fast and capable XC or Marathon race bike. If there is one category the Fourstroke belongs to, it is quite simply racing.

Specifications

  • FrameFourstroke 01 - Advanced Pivot System
  • Tubing01 Premium Carbon (F&R), DTi
  • SizeS / M / L
  • ForkFox Float 32 SC, Performance Elite, FIT4, Remote (100mm)
  • Rear ShockFox Float DPS, Perfomance Elite, Evol, Remote (100mm)
  • Gears2x11
  • ChainwheelShimano XT, 36-26T
  • CassetteShimano XT, 11-40T
  • ChainShimano XT
  • Front DerailleurShimano XT
  • Rear DerailleurShimano XT, Shadow Plus
  • ShifterShimano XT
  • BrakesShimano XT (160/160mm)
  • HandlebarBMC MFB 01 Carbon, 720mm
  • StemBMC MSM 02
  • SeatpostBMC MSP 01 Carbon
  • SeatFizik Tundra M7 Versus
  • HubsDT Swiss XR 1501 Spline ONE, Centerlock
  • RimsDT Swiss XR 1501 Spline ONE 22,5
  • TyresContinental: X-King (F) / RaceKing (R), Performance Silver, 2.2
  • ColourGrey

Geometry

– fourstroke 01 XT

Size S M L
Stack mm 585 595 605
Reach mm 412 434 456
Seat tube st mm 420 460 510
Top tube tt‘ mm 585 610 635
Head tube ht mm 90 100 110
Seat angle sa ° 73.5 73.5 73.5
Head angle ha ° 70 70 70
Rear center rc mm 445 445 445
Front center fc mm 659 684 709
Wheelbase wb mm 1101 1126 1151
BB drop mm 40 40 40
Fork length fl mm 506 506 506
Fork rake fr mm 51 51 51
Trail mm 80 80 80
Crank length mm 170 175 175
Stem length mm 70 70 70
Stem angle ° 6 6 6
Bar width mm 720 720 720
Bar rise mm 4 4 4
Backsweep ° 9 9 9
Post length mm 350 400 400
Stand over height mm 759 791 820

Concept

BWC Geometry

The demands of cross country mountain bike racing require a maneuverable machine that inspires confidence when you scream down the final descent into a sprint finish. A long top tube, slack head tube angle and a wide bar paired with short stem and chainstays is our recipe for making big wheels roll fast and turn easily. The entire Fourstroke family is built around this super progressive approach to bike geometry.

Lightweight

Chasing the podiums of World Cup races is all about maximizing technical advantages. A frame that weighs merely 2.5 kilos  is a fantastic place to start. Advancements in carbon technology combined with the skill of our Impec Lab’s engineers resulted in an industry and race-leading machine for XC and Marathon mountain bike racing.

Efficient

Our Advanced Pivot System (APS) for the Fourstroke family focuses on efficiency and reducing rider fatigue. APS’s high tech design promotes extreme pedaling efficiency. How extreme? World Champion extreme. Thanks to the efficiency of APS, the  Fourstroke is one of the only full-suspension bikes in the world to have won the XCO World Championships.

Array – Fourstroke 01 ONE

Frameset

  • Frame: Fourstroke 01 Premium Carbon Frame (F&R) – 100mm
  • Frame Technology Advanced Pivot System Suspension and Big Wheel Concept Geometry
  • Sizes: 3 sizes: S / M / L
  • Frame Weight: 2040g (M)**

Integration

  • Frame: DTi compatible, Integrated single-ring chain guide, Internal routing for lockout, Initial Load Indicator

Technical details

  • Frame: 12 x 142mm Thru-axle (Shimano)
  • Fork: Tapered steerer 1-1/8” to 1-1/2”, 51mm offset
  • Seatpost: 31.6mm
  • Bottom Bracket: PF92
  • Brakes: Postmount 160 / 180***
  • Drivetrain: Bottom-pull front derailleur – High-direct, type mount, Replaceable standard or direct mount rear derailleur hangers
  • Tires: 2.25” maximum width****
  • Misc.: 200mm x 50mm shock dimensions, 21.84 x 8mm hardware, 36T maximum chainring, single ring drivetrain

 

**Average sample weight with hardware
***Rotor sizes adapted for some frame sizes
****Tire dimensions based on measured tire width

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