COVID-19 Announcement: Due to the current situation, unfortunately deliveries are taking up to 3 working days to be delivered.

Availability: Out Of Stock
Sku: BM301871S


Born to surpass the demands of the world’s top endurance racers, the all-new Fourstroke utilizes 100mm of front and rear travel, plus the revolutionary RAD integrated dropper post to deliver the sport’s most innovative XC race machine.


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.

Frame Fourstroke 01 - Advanced Pivot System
(100mm travel), PF92 Bottom Bracket,
12 x 148mm Boost Thru-axle

Seatpost Race Application Dropper (RAD)
80mm Drop

Frame Technology RAD seatpost, Big Wheel Concept
Race Geometry

Sizes 4 sizes: S / M / L / XL

Frame Weight 2270g*

Seatpost weight 345g**

Frame Integrated seatpost
Internal cable routing
Integrated frame protections
Integrated fork stopper

Technical details
Frame 12 x 148mm Boost, 1.5” Head Tube

Fork Tapered steerer 1-1/8” to 1-1/2”
44mm offset
100mm travel

Seatpost Race Application Dropper (RAD)
80mm Drop / elliptic shape (34.1x25.6mm)

Bottom Bracket PF92

Brakes Postmount 160 / 160***

Drivetrain 1x specific
Boost chainline
Replaceable standard or direct mount
rear derailleur hangers

Tires 58mm maximum width****

Misc. 38T maximum chainring (1X boost cranks)
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


  • Fourstroke 01 - Advanced Pivot System, Race Application Dropper, PF92 Bottom
  • Bracket, 12 x 148mm Thru-axle, 100mm Travel
  • 01 Premium Carbon (F&R)
  • S / M / L/ XL
  • Fox Float 32 SC, Factory, FIT4, Kashima, Remote, 100mm
  • Fox Float DPS, Factory, Evol, Kashima, Remote
  • 1x12
  • SRAM XX1 Eagle SL, 34T
  • SRAM X01 Eagle, 10-50T
  • SRAM XX1 Eagle
  • SRAM XX1 Eagle AXS
  • SRAM XX1 Eagle AXS
  • Sram Level Ultimate (160/160) *
  • BMC MFB 01 Carbon, 750mm
  • BMC MSM 01
  • BMC RAD 80mm Drop
  • Fizik Antares R5
  • DT Swiss XRC 1200 Spline
  • DT Swiss XRC 1200 Spline 25 **
  • Vittoria Barzo G2,0 tubeless 2.25
  • Gold Flake

* M size spec - rotor size adjusted for some sizes
** Tubeless rim strip & valve included

Shipping is Free on all items to anywhere in the United Kingdom

Shipping rates to international locations are calculated at checkout. (More Accurate shipping information will appear here soon)
Finance options Coming Soon

BMC Fourstroke 01 One New XX1 Eagle MTB Bike

Just added to your wishlist:
My Wishlist
You've just added this product to the cart:
Go to cart page