When race engineering meets full-gas fun, you get the Fourstroke R 01, our lightest full-suspension mountain bike frameset.
Engineered in our Impec Lab and sharpened on the race circuit, this 01 Premium Carbon frameset floats up the climbs while progressive XC race geometry encourages you to charge downhill. But the real dark magic? APS suspension pivots tuned for maximum traction, paired with the ultra-efficient Autodrop integrated dropper seatpost.
This frame-only variant comes ready for your dream XCO build. Raw carbon finish with removable decals means custom paint is easy and it includes the fully tunable Öhlins TXC2 Air rear shock. Now go crush it.
VAR0 colorway
When race engineering meets full-gas fun, you get the Fourstroke R 01, our lightest full-suspension mountain bike frameset.
Engineered in our Impec Lab and sharpened on the race circuit, this 01 Premium Carbon frameset floats up the climbs while progressive XC race geometry encourages you to charge downhill. But the real dark magic? APS suspension pivots tuned for maximum traction, paired with the ultra-efficient Autodrop integrated dropper seatpost.
This frame-only variant comes ready for your dream XCO build. Raw carbon finish with removable decals means custom paint is easy and it includes the fully tunable Öhlins TXC2 Air rear shock. Now go crush it.
innovationOptimized APS Suspension
Adjusting suspension pivots boosts efficiency. The secret is in their placement, optimized for real riding performance. Designed in our Impec Lab and proven on the race track. Trust us: it’s easier to feel the speed than explain the magic.
Go Long
Go the distance with an XC frame engineered to take two full-size bottles and still clear 62 mm (2.4”) tires, a rarity for a platform this aggressive. And don’t take our word for it: its palmarès already proves the design works.
Autodrop Technology
Your secret weapon? A fully integrated automatic dropper post that lowers at the push of a button – no awkward squat required. More control, more speed, and more confidence on the most technical XC tracks.
Technical Overview
Frameset
Frame:
Fourstroke R 01 | 01 Premium Carbon with Autodrop Technology | APS Suspension System | 120mm Travel | Fully Guided Internal Cable Routing | Post Mount Disc | 12 x 148mm Boost Thru-Axle
Suspension
Rear Suspension:
Öhlins TXC2 Air | 190 x 45mm | DT Swiss Remote Lockout
Remote Lockout:
DT Swiss Double Stage Remote Lockout
Seat
Seatpost:
BMC Autodrop Integrated Dropper Seatpost | 80mm Drop
Drivetrain
Bottom Bracket:
Press-Fit 92mm MTB
Brakes
Rotor Size (F/R):
Rear rotor compatibility: 160mm or 180mm with an adapter
Accessories
In the Box:
SRAM UDH derailleur hanger | Headset including 2x10mm spacers
Additional Information
Tire Clearance:
62mm measured tire
Weight without Pedals:
3125g | Size M as pictured with all accessories
ASTM Classification:
Level 3
System Weight Limit:
110kg
General Product Safety Regulation (GPSR):
Safety Instructions GPSR (EU)
Responsible person according to GPSR (EU)
| Size | S | M | L | XL |
|---|---|---|---|---|
| Rider Height | <172 | 172-182 | 180-188 | >188 |
| Reach | 437 | 457 | 477 | 500 |
| Stack | 584 | 592 | 600 | 615 |
| BB Drop | 38 | 38 | 38 | 38 |
| Fork Length | 530 | 530 | 530 | 530 |
| Fork Rake | 44 | 44 | 44 | 44 |
| Front Center | 711 | 743 | 760 | 790 |
| Head Tube | 84 | 93 | 101 | 118 |
| Head Tube Angle | 66.5° | 66.5° | 66.5° | 66.5° |
| Rear Center | 431 | 431 | 431 | 431 |
| Seat Angle | 75.6° | 75.6° | 75.6° | 75.6° |
| Seat Tube | 420 | 440 | 470 | 490 |
| Seatpost Drop | 80 | 80 | 80 | 80 |
| Seatpost Length | 389 | 414 | 414 | 414 |
| Seatpost Offset | 0 | 0 | 0 | 0 |
| Standover Height | 727 | 727 | 727 | 727 |
| Top Tube | 576 | 599 | 623 | 651 |
| Trail | 115 | 115 | 115 | 115 |
| Wheelbase | 1140 | 1172 | 1189 | 1219 |
