2023 BMC

Fourstroke FOUR

A 29″ carbon frame full suspension crosscountry bike with upper mid-range components.
Compare the full range

MSRP€4,299 (about $4,724)
FrameCarbon
SuspensionFull, 100 / 100mm
ForkRockShox SID
ShockRockShox SIDLuxe Select+
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetSLX, Deore
BrakesHydraulic Disc
View on de.bmc-switzerland.comLearn about BMC
Top Comparison
Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Fourstroke FOUR
Other Crosscountry bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

28 mph

Fourstroke FOUR

27 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Fourstroke model range

View Comparison
Sizing
SM

< 5'9"

MD

5'7" – 6'0"

LG

5'10" – 6'3"

XL

6'1" +

Rider Fit Notes
  • 6'3", size Xl, Just right
Reviews
BikeRadar
BMC Fourstroke 01 TWO first ride review

Apr 2023 · Rachel Bennet

Refined geometry and tech make this XC bike a blast to ride on any trail

Highs
  • Confidence-inspiring geometry and high-speed handling

  • Autodrop post works as promised

Lows
  • Low BB could increase pedal strikes for some riders

  • Expensive

  • Front end can feel twitchy through tighter, slower sections of trail

Read Review

The Gear Loop
BMC Fourstroke 01 Two review

Jan 2023 · Leon Poultney

The BMC Fourstroke 01 Two packs race-winning pedigree, but it also makes for a superb single track machine.

Highs
  • Razor sharp handling

  • Smooth and reliable shifting

  • Auto dropper post is clever

Lows
  • Bottom bracket feels low

  • Too niche a bike for some

Read Review

Pinkbike
BMC's All-New Fourstroke Has a Self-Dropping 'Automatic' Seatpost

Oct 2022 · Seb Stott

The revamped race bike's saddle goes up and down at the press of a button.

Read Review

MBR
BMC Fourstroke 01 LT One first ride review - MBR

Jul 2022 · Alan Muldoon

Tom Pidcock’s race machine with a bit more oomph, BMC’s Fourstroke LT gives mere mortals a bit of a safety net that takes it into best down-country territory. Need to know Long-travel version of the BMC Fourstroke that Tom Pidcock races Fox 34 SC fork delivers 120mm travel to match the rear Remote lever offers three distinct suspension modes Integrated bump-stops protect the frame and allow for straighter and stiffer downtube Sag indicator on the upper link makes for easy suspension set up Available in four frame sizes Priced at €8,499 (no UK pricing as yet) Tom Pidcock is one lucky son of a gun. And not because Mathieu van der Poel went out the front door at the 2020 Tokyo Olympics. It’s not even because on any given day he can race for the win at the highest level in road racing, cyclo-cross or mountain biking. That’s down to a lifetime dedicated to his craft and good genetics, not good fortune. When I say Pidcock is lucky, it’s because he was in the fortunate position of being able to choose which mountain bike he wanted to race. A rare position for a sponsored rider at any level, let alone someone capable of competing for, and ultimately winning, Olympic gold. How did he find himself in this particular situation? He currently rides for Ineos Grenadiers and the team is sponsored by Pinarello for Road and Cross. Because the  Italian brand doesn’t make a XC full-suspension race bike, that left Pidcock free to choose. Rumour has it, he tested a bunch of bikes from different brands before settling on the BMC Fourstoke. Not that you could tell he is riding one as all of the graphics have been removed. Now, given that BMC gets no direct publicity we can only assume that no money changed hands and it was genuinely Pidcock’s first choice. That, or, it is one of the best guerrilla marketing campaigns ever. Given that Pidcock has a custom build with electronic SR Suntour suspension, it’s hard to know which configuration of Fourstroke he’s riding. That’s right; there are two, and both use the exact same full carbon frame. The standard Fourstroke gets a 50mm stroke shock to deliver 100mm of travel, while the LT version we have here retains the same eye-to-eye length but gets a 5mm longer stroke to boost travel to 120mm. But the numbers don’t quite add up. If the standard Fourstroke delivers 100mm of travel from a 50mm stroke shock that gives it a 2:1 leverage ratio. Now, given that BMC upped the shock stroke by 5mm on the LT, it should be obvious that it will only provide an extra 10mm of travel. So the LT is a 110mm bike not a 120mm bike, which is exactly the amount of travel that I measured in the workshop. To confuse matters further, the stock Fourstroke actually has 104mm of travel, and BMC rounds it down. The shortfall in travel on the LT could also …Continue reading »

Highs
  • Progressive geometry with a fast efficient ride feel. LT version is only 0.5kg heavier than the race version.

Lows
  • Could be plusher in the open suspension setting. Restricted to one dropper post option.

Read Review

Bike Perfect
BMC Fourstroke 01 LT One review – a winning XC bike turns its hand to downcountry

Apr 2022 · Graham Cottingham

BMC’s Fourstroke may be one of the more progressive XC bikes around, but does this translate when it gets a downcountry makeover

Highs
  • Harder you ride better it feels suspension

  • Very light for a 120mm bike

  • Precise handling chassis

  • Playful ride feel

  • Snappy under power

  • Beautifully finished and high-quality frame

Lows
  • 80mm dropper post is way too short

  • Slacker geometry has led to slacker seat tube angle, shortened reach, and raised bottom bracket

  • BMC don't offer the great value

  • Suspension lock-out exposed on top of the bars, rather than tucked below

Read Review

Enduro Mountainbike Magazine
BMC Fourstroke 01 LT ONE – In our big 2022 downcountry group test

Mar 2022 · Simon Kohler

At first glance, it’s hard to tell apart the BMC Fourstroke 01 LT ONE from its XC counterpart. However, the beefier fork, aggressive tires and extra travel promise better trail performance. But is it just mere promises or can the BMC deliver on the trail?

Highs
  • Good balance in the attack position

  • Intuitive handling

  • Very efficient when pedaling even in fully open mode

Lows
  • Restricted freedom of movement

  • Rear suspension lacks sensitivity downhill

  • Brakes don’t do justice to the character and intended use of the bike

Read Review

Loam Wolf
Review: BMC Fourstroke 01 LT One

Jan 2021 · Nic Hall

If you're an XC pinner looking for maximum speed on the climbs, check this BMC Fourstroke out. And see why it's NOT the mountain bike for us.

Highs
  • Climbing Performance

  • Pure Speed

  • High-Gloss Paint

  • Great Spec

Lows
  • Dropper post limited range

  • Uncomfortable in the air

  • Not as comfortable descending as similar bikes

  • High-end price tag

Read Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Fourstroke Carbon | APS Suspension System | 100mm Travel | Fully Guided Internal Cable Routing | PF92 Bottom Bracket | Post Mount Disc | 12x148mm Boost Thru-Axle

BB StandardBB86/BB92, Press Fit

Hanger StandardUDH

ColorIron Grey / Black

Fork

Rock Shox SID SL RL - TwistLoc Lockout - TwistLoc Lockout

Travel100mm

Shock

RockShox SIDLuxe Select+ Shock

Travel100mm

Bottom Bracket

BB86/BB92, press-fit

Stem

MSM01 Stem

Handlebar

BMC MFB02 Alloy 750mm

Saddle

Fizik Antares R7

Seatpost

BMC MSP03 - 31.6mm - 0mm Offset

TypeRigid

Groupset
Rear Derailleur

SHIMANO SLX RD-M7100 12 spd

Crank

Shimano Deore FC-M6100 | 32T

Shifters

SHIMANO SLX SL-M7100 12 spd

Cassette

SHIMANO Deore CS-M6100 12 spd 10-51T

Chain

SHIMANO Deore CN-M6100 12 spd

Brakes

Hydraulic Disc

TypeHydraulic Disc

Wheels
Rims

SHL28OS | 25mm Inner Width

Front Hub

Shimano HB-MT400-B / FH-MT410-B

Rear Hub

Shimano HB-MT400-B / FH-MT410-B

Tires

Vittoria Mezcal 2.35"

Rider Notes
Riders Also Viewed

Last updated March 23