
2025 BMC Fourstroke Four - Acid Yellow/Black
BMC- SRAM NX Eagle Drivetrain
- Rock Shox SID SL RL Fork / Rock Shox SIDLUXE Select+ Shock
- SHL28OS Wheelset
Fourstroke is the cornerstone Cross-Country bike designed to excel on every level. Offering beyond-the-tape versatility, this XC machine is setting a new standard with unrivalled 100mm APS dual-link suspension travel. The redefined Big Wheel Concept geometry improves performance in a lightweight full-carbon frame with integrated protection and two water bottle cages for long-distance rides. The Fourstroke FOUR arrives with a SRAM NX Eagle drivetrain, RockShox SID SL RL fork and RockShox SIDLuxe shock, SHL28OS wheels with 25mm inner width and the BMC MSP03 seatpost.
Optimized APS Suspension
More traction equals more speed and that is what we are after. Next-level kinematics tuning, and best-in-class suspension performance delivers full traction, great efficiency, and active suspension on every terrain.
Go Long
This long-distance marathon machine is versatile by design. Allowing you to go far, the Fourstroke has been optimized to fit two water bottles and offers a tire clearance of 62mm to fit the latest 2.4" XC tires.
Redefined Geometry
BMC Race is tailored to a fast and progressive racing style designed to attack the steepest and loosest courses with the improved 66.5° head angle and a long front-end.
Design Boost
Put the hammer down! The redesigned chassis excels in torsional and pedalling stiffness for unparalleled power delivery. A true performance leap that boosts one of the most successful XC race bikes on the scene to a new level.
- Frame:
- Fourstroke Carbon | APS Suspension System | 100mm Travel | Fully Guided Internal Cable Routing | Post Mount Disc | 12 x 148mm Boost Thru-Axle
- Stem:
- BMC MSM 01
- Handlebar:
- BMC MFB 02 Alloy | 750mm
- Seatpost:
- BMC MSP 03 | 31.6mm | 0mm Offset
- Saddle:
- Fizik Antares R5
- Crankset:
- SRAM X1 1000 Eagle
- Chainrings:
- 34T
- Cassette:
- SRAM SX Eagle PG-1210
- Cassette Size:
- 11-50T
- Chain:
- SRAM NX Eagle
- Rear Derailleur:
- SRAM NX Eagle
- Shifters:
- SRAM NX Eagle
- Gears:
- 1 x 12
- Bottom Bracket:
- PF92 Bottom Bracket
- Brake Levers / Calipers:
- SRAM Level T
- Rotors:
- SRAM Centerline Rotors
- Rotor Size (F/R):
- 160 / 160 S-M | 180 / 160 L-XL
- Rims:
- SHL28OS | 25mm Inner Width
- Hubs (F/R):
- DC-711 (F) | DC-3248 (R)
- Tires:
- Vittoria Mezcal | Tubeless | 2.35 Inches
- Tire Clearance:
- 62mm
- ASTM Classification:
- Level 3
- System Weight Limit:
- 110kg
- General Product Safety Regulation (GPSR):
- Safety Instructions GPSR (EU), Responsible Person (GPSR (EU)) (repeated references to Safety Instructions and Responsible Person under GPSR (EU))
- Tubeless Information:
- Tubeless Ready Rims | Tubetype Tires
- Rear Suspension:
- RockShox SIDLUXE
- Front Suspension:
- RockShox SID SL RL
- Remote Lockout:
- TwistLoc Lockout