Every second matters
The rulebook has been thrown away: re-imagine the ultimate XC race bike and join the revolution – where up meets down. Born to surpass the demands of the world’s top XC athletes, the Fourstroke 01 delivers the ultimate performance on the most demanding courses. A purpose-designed race machine, every element of its structure is crafted to optimize speed, save seconds, and keep riders ahead of the pack.
Our all-new Race Application Dropper Seatpost (RAD) ensures that its fast and smooth adjustments maximize power and control whatever the gradient, allowing you to ride more dynamically. The revised Big Wheel Concept Race (BWC) geometry has evolved to embody the progressive riding style our athletes display on technical World Cup tracks.
The Fourstroke 01 shifts the paradigm. Reel in the competition on the climbs, drop them on the descents. Every second matters.
The ultimate Cross Country race machine
The Fourstroke 01 is born to shave off seconds up and down the toughest XC race courses. Our holistic approach to look at the bike as an entire system allowed us to develop our fastest and most intuitive race bike ever.
The first integrated XC dropper seatpost
RAD (Race Application Dropper) is the world’s first integrated XC dropper post. A genius engineering solution driven by our athletes’ need for modern XC descending performance packed into a featherweight system.
Big Wheel Concept Race Geometry, a new approach
The BWC Race (Big Wheel Concept) geometry supports a progressive XC riding style through the wide-open head angle, long front-end, short chainstays and an innovative stem design.
Built for efficiency
Accept no compromises with a lightweight chassis designed for class-leading stiffness and lightning-fast sprints. The refined APS (Advanced Pivot System) suspension deliver pedaling efficiency, traction and control on every race course.
- Fourstroke 01 – Advanced Pivot System, PF92 Bottom Bracket, 12 x 148mm Thru-axle
- R.A.D.Race Application Dropper integrated seatpost – 80mm Travel
- R.A.D.seatpost, Big Wheel Concept Race Geometry
- Sizes: S / M / L / XL
- Frame Weight*: 2180g
- Seatpost Weight** : 345g
- Integrated Seatpost
- Internal Cable Routing
- Integrated Frame Protection
- Integrated fork stopper
- 12 x 148mm Boost
- Fork : Tapered Steerer 1-1/8″ to 1-1/2″, 44mm offset, 100mm travel
- Seatpost: R.A.D.Race Application Dropper integrated seatpost – 80mm Travel, Elliptic Shape (34.1×25.6mm
- Bottom Bracket: PF92
- Brakes: Postmount 160 / 160***
- Drivetrain: 1x Specific, Boost chainline, Replaceable standard or direct mount rear derailleur hangers
- Tires: 29″ / max. Tire width 58mm ****
- Misc. : 38T maximum chainring – single ring drivetrain (1X Boost cranks)
- Shock dimensions: 185mm x 50mm Metric Shock, Trunnion Mount, 20x8mm hardware
*Average sample weight with shock and complete hardware (w/out rear axle)
**Average sample weight (w/out lever)
***Rotor sizes adapted for some frame sizes
****Tire dimensions based on measured tire width
RAD seatpost: completely integrated with a low system weight of 345g – the most radical XC dropper seatpost.
Lightweight Premium Carbon: a full-carbon system with a new super light carbon upper link. The Fourstroke 01 features a Premium Carbon upper link that saves 40g compared to Aluminum, and provides a stiffer connection between the front and rear triangle.
BWC Race Geometry: a radical approach to XC geometry, tailored to a fast and progressive riding style.
Integrated fork stopper: smart engineering for optimized cable routing and frame protection. The integrated fork stopper protects the frame from impacts and allows a straight downtube design for improved stiffness and weight. The cable cover allows for clean cable entry and creates an additional protection layer.
1 x Specific Frame Construction: designed for ultimate stiffness and improved tire clearance. The 1 x specific design allows us to improve bottom bracket stiffness and the overall frame weight. At the same time it enables us to shorten the chainstays and make ample clearance for wide tires.
Integrated protection: molded protections and dedicated mud guards for increased durability. Molded plastic covers on chainstay and lower link ensure durability and a clean look.