Developed in the factory for the course – the fourstroke FS01 sets the standard for lightweight, race-standard full suspension bikes. With a frame weight of 2000 grams ( including shock system ), optimized APS suspension system and perfectly coordinated components, the FS01 offers the ultimate in ride performance.
Maximum propulsion and traction, precise steering characteristics and directional stability combined with a compelling aaesthetic, that’s the fourstroke FS01.
Specifications
Frame: APS Carbon (Rear Travel 100mm) 
Tubing: Carbon
Size: S / M / L 
Fork: Fox FRL FIT, 100mm
Rear Shock: Fox RP2 (RL) 
Gears: 2 x 10
Crankset: Sram XO, 42-28
Cassette: Sram PG, 12-36
Front Derailleur: Sram XO
Rear Derailleur: Sram XO
Shifter: Sram XO
Brakes: Sram XO, 160mm Rotor
Handlebar: Easton EC70 XC, Low Rise
Stem: Easton, EA70
Seatpost: BMC Race Post
Saddle: Selle Italia SL XC
Hubs: Easton EA90 XC
Rims: Easton EA90 XC
Tyres: Schwalbe, Rocket Ron 26x2.25 
Colour: Pure White / Naked Carbon, Gloss
weight: 
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 | 395 | 580 | 110 | 542 | 419 | 69.5 | 73.5 | 433 | 10 |
| M | 445 | 595 | 125 | 557 | 429 | 69.5 | 73.5 | 433 | 10 |
| L | 485 | 610 | 140 | 570 | 439 | 69.5 | 73.5 | 433 | 10 |
| Rider height | Bar width | Stem extension | Crank length |
|---|---|---|---|
| 158 – 168 | 685 | 80 | 170 |
| 165 – 178 | 685 | 90 | 175 |
| 175 – 185 | 685 | 100 | 175 |
Reviews
technology
initial load indicator
initial load indicator
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Used for the best possible adjustment of the sag, can be easily checked when getting on and adjusted where necessary.
TCC
tuned compliance concept
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With a neat combination of different carbon fibers and their alignment, and by applying stepped tube profiles, we achieve increased vertical compliance while maintaining high levels of lateral and torsional stiffness.
APS
advanced pivot system
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Suspension system that ensures comfort, unsurpassed traction and efficient power transmission in any biking situation.
iSC
integrated skeleton concept
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Tube junctions perfectly tailored to the distribution of forces. Cleverly selected skeletal reinforcement elements at the nodal points and the spread of the top tube distribute the impacting forces perfectly.
NBP
natural born postmount
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Direct assembly of the brake cylinder at the frame without adapter.
