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fourstroke FS01 29 XC

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Our fourstroke has always been a race bike, built with potential to be a lot more. 29 inch wheels make this latest iteration more capable than ever before.

 

Racers looking for efficiency and responsiveness will not be disappointed, and it is also the perfect tool for all day mountain bikers riding challenging terrain. Uphill or downhill, the fourstroke simply got faster.

Specifications

  • Frame Frame: APS (Rear Travel 100mm)
  • Tubing Tubing: Carbon
  • Size Size: S / M / L
  • Fork Fork: Fox 32 Float CTD Adj FIT Factory Kashima 100mm
  • Rear Shock Rear Shock: Float CTD BV Factory Kashima
  • Gears Gears: 3 x 10
  • Crankset Crankset: Shimano XTR, 42-32-24
  • Cassette Cassette: Shimano XTR, 11-36
  • Front Derailleur Front Derailleur: Shimano XTR
  • Rear Derailleur Rear Derailleur: Shimano XTR Shadow PLUS
  • Shifter Shifter: Shimano XTR I-Spec
  • Brakes Brakes: Shimano XTR 180mm ICE-Tech
  • Handlebar Handlebar: Easton EC70 XC Flat
  • Stem Stem: Easton EA90
  • Seatpost Seatpost: Easton EC70 Zero
  • Saddle Saddle: Tundra 2 Braided
  • Hubs Hubs: Easton EA90 XC
  • Rims Rims: Easton EA90 XC
  • Tyres Tyres: Continental Race King 2.2
  • Colour Colour: Brown
  • weight weight: 10.45 kg
  • Pedal Pedal:  

Geometry

Glossary

s
Seat tube
tt
Top tube
ht
Head tube
ha
Head tube angle
sa
Seat angle
rc
Chain tube
Size s tt ht stack reach ha sa rc drop
S 420 585 90 585 412 70 73.5 445 40
M 460 610 100 595 434 70 73.5 445 40
L 510 635 110 605 456 70 73.5 445 40
Rider height Bar width Stem extension Crank length
165 - 174
170 - 182
180 - 195

Concept

Fast
The geometry is built around the BWC (Big Wheel Concept). A longer top tube and slacker head angle, in combination with wide handlebars, make the handling stable and comfortable. Short chain stays, low bottom bracket and a short stem complete the concept by keeping the bike lively.

Efficient
A race bike must be light, and with a complete frame weight at 2kg, the fourstroke FS01 fears no competition. Our APS (Advanced Pivot System) suspension, specially refined for big wheels in conjunction with the BWC, provides the perfect balance of comfort, control and efficiency.

Capable
The combination of big wheels, stable geometry and APS suspension makes the bike capable of overcoming any obstacle. High torsional stiffness improves steering precision and boosts confidence.
1) Frameset
-APS suspension, 100mm travel
-BWC 29er geometry
-12x142mm rear axle
-Frame weight (FS01): 2070 gr including all hardware
-Hardware includes: Rear shock, chain guide, bolts, seat clamp, and rear wheel axle.
-Shock dimensions: 200x50mm

2) Bottom bracket – BB90 Shimano pressfit

3) Integrated chainguide and chain catcher – Refer to specific manual

4) Initial load indicator – Convenient SAG adjustment

5) Tapered Headset – 1-1/8” to 1-1/2”

6) Natural born post mount
-Designed for 160mm discs
-Maximum 185mm rotors
-Replaceable threaded inserts

7) Cable routing
-Continuous cable routing along the down tube
-Internal cable routing for reverb stealth or shock lockout

Reviews

  • fourstroke FS01

    fourstroke FS01

    What Mountainbike

    England

    December 2012

    Download PDF

  • fourstroke FS01 29

    fourstroke FS01 29

    bike

    Deutschland

    Oktober 2012

    Download PDF

  • fourstroke FS01 29

    fourstroke FS01 29

    MountainBIKE

    Deutschland

    Oktober 2012

    Download PDF

  • fourstroke FS01

    fourstroke FS01

    Bike Magazine

    Françe

    Septembre 2012

    Download PDF

  • fourstroke FS01 29

    fourstroke FS01 29

    Vélo Vert

    Françe

    Août 2012

    Download PDF

technology

APS

advanced pivot system

Unsurpassed power transmission, traction control, and comfort.

The ideal suspension system converts all of a rider's energy into forward propulsion, while at the same time absorbing impacts. Mechanically, these two goals are at odds with one another. But BMC's APS rear suspension satisfies these two goals by carefully calculating the pivot points of the rear suspension so that inertial force generated under acceleration is not misdirected into compressing the shock.

How is this accomplished? With APS the virtual pivot point is positioned so that constant chain tension is maintained for forward acceleration. As such, pedaling forces are used for forward propulsion with no loss of energy transfer in the suspension system. At the same time, the shock system ensures optimum rear wheel traction, guaranteeing that those pedaling forces are not only getting to the rear wheel, but to the ground, as well. The end result is a suspension system that provides extreme power transfer efficiency, uncanny traction, and excellent comfort.

 

 

System integration

natural born postmount

Brake mount is directly bolted to the rear triangle.

Direct assembly of the brake caliper to the frame with no need for an adapter means improved braking power transfer, especially under demanding conditions.

initial load indicator

Remarkably simple sag adjustment.

Just set the sag adjustment according to the indicator, and go. Trailside adjustments have never been simpler.

Catalog 2014

team clothing

Order online now: Jersey Set of the BMC Racing Team is available for order now from our website.