BMC FOURSTROKE 01 LT ONE REVIEW
Words by Nic Hall
Photos by Cole Gregg
I have a soft spot for XC race machines like the BMC Fourstroke. Most of the people I grew up riding with had a beat up old cross-country bike as their first “real” mountain bike. Many of us learned to ride on short travel or hardtail bikes, with what we considered to be “wide” 2.1” tires. The World Cup XC bikes of today are a far cry from what we grew up on, but they still remind me of the times spent racing up hills with my friends. BMC sent us the new Fourstroke 01 LT ONE, their top tier XC-trail bike, and I have spent the last months riding it all over Central Oregon. I finally think I have the bike figured out and what kind of person may be interested in it, so read on to find out if that person is you.
BMC has a long history of putting the latest technology under some of the best XC World Cup athletes in the world. The BMC Fourstroke 01 LT One is the latest example of their cutting-edge engineering. They took their World Cup race bike, added 20mm of travel, and slackened the head tube angle one degree to bolster the descending capabilities. Geometry is solidly in the cross country to fast trail category, with the Large sporting a head tube angle of 66.5 degrees, seat tube angle of 74.8 degrees, reach of 456mm, and chainstay length of 429mm. It is only available with 29” wheels, and packs 120mm travel on both ends. The rear end utilizes BMC Bicycles’ APS dual link suspension system, with two short links controlling the movement of the solid rear triangle and the upper also driving the shock. BMC calls their 29-specific geometry the BWC or “Big wheel concept.” Their idea is to take the benefits of 29in wheels, like increased rolling speed and a bigger contact patch; and increase the handling characteristics by lengthening the front-center, dialing in the bottom bracket drop and chainstay length, and pairing short stems with their builds.
As always, the numbers are only half the story. BMC integrated their top end design touches and tech into the Fourstroke 01 LT. The dropper post is an integrated, elliptical dropper with 80mm of travel and proved to be a major point of contention for our DH-biased testers. It weighs 100g less than any conventional dropper and removes a conventional seatpost clamp altogether. A “premium” carbon layup is used throughout the bike along with a new forged carbon upper link. Integrated frame and linkage protection keep that nice carbon looking good and the suspension moving smooth.
The parts spec on the BMC Fourstroke 01 LT is nothing less than the best. A Fox 34 Step Cast Performance Elite Fit4 fork and Float DPS Performance Elite Evol shock handle suspension duties, with both featuring a bar mounted remote lockout. The drivetrain is claimed to be full SRAM XX1 Eagle, however a GX shifter and 10-52 XO1 cassette prevent this from being entirely true on our test bike. Braking is handled by the ultra-light SRAM Level TLM brakes coupled with Centerline rotors – 180mm on the front and 160mm rear. The cockpit features in-house BMC components, with a 760mm carbon bar and 60mm aluminum stem. Wheels are Mavic Crossmax Carbone XLR featuring 30mm wide rims, with Maxxis Rekon 2.4 WT EXO tires front and rear. The total package without pedals comes in at 11.3kg or 24.9lbs and has a price tag that matches the top-tier spec at $9,999/€7,999.