BMC’s mid-level (but race-ready) 29er hardtail mountain bike gets an all-new frame, aimed at tackling more aggressive trails without giving up the responsive power transfer it’s known for.
The brand’s Tuned Compliance Concept (TCC) uses flat seatstays, a D-shaped seat tube and post, and even the wheel and tire spec, to tame the rough stuff. A slacker head angle lets you dive in and test it, but the bottom half of the bike remains all business when it’s time to toe the line…
BMC’s new geometry
Pulling inspiration from their Fourstroke full suspension XC bike, the new Twostroke keeps the rider in an aggressive position with its 75º seat angle and short seat stays.
When it’s pointed downward, a 67º head angle and 44mm offset fork help keep the wheel stable and out in front of the rider.
Click to enlarge the geometry chart. Four sizes are offered (S/M/L/XL).
BMC Twostroke frame details & tech
The most eyecatching part of the frame is the flattened seatstays that cut into the underside of the top tube, but there are a few other details worth noting.
The bike uses fully internal cable routing with a covered entry port on the lower, left-hand side of the downtube, making it all but invisible.
The other standout feature is the D-shaped seat tube and proprietary seatpost. It’s designed to offer some rearward flex to take the edge off bumps when you’re seated. Or, you can shim it to fit a standard round 27.2 dropper seatpost.
And integrated chain guide sits above the chainring, and three bottle cage bolts on the downtube let you choose between a low single bottle position, or adding a bottle on the seat tube, too.
BMC Twostroke pricing and models
Interestingly, BMC opted to keep the entire range of bikes affordable, forgoing ultra high-end build kits…likely because they’re reserving those for their soft-tail Teamelite (which, BTW, hasn’t seen a real update since 2015, so our money’s on an updated version of that coming soon!)
The Twostroke 01 ONE (above) is the most expensive at $4,299 (€3,999) and gets a mostly SRAM GX Eagle group with X1 (non-series) carbon cranks and X01 rear derailleur, and SRAM Level TLM brakes. DT Swiss XR 1700 wheels and Vittoria Barzo 29×2.25 tires round out the package. Claimed weight is 9.33kg.
The Twostroke 01 TWO comes in at $3,299 (€2,999) and gets a full GX Eagle group with Level TL brakes. Claimed weight is 9.7kg.
The Twostroke 01 THREE runs a GX/NX/SX Eagle mix with Shimano Deore BR-6100 brakes, Shimano hubs and Alex rims for $2,699 (€2,499). Claimed weight is 11.46kg.
The least expensive carbon “01” level model (all of these share the same carbon frame) is the Twostroke 01 FOUR with a Deore 1×12 group and MT200 brakes. Retail is $2,199 (€1,999), and claimed weight is 11.46kg.
Below this are two alloy models for $1,599 (€1,599 with NX Eagle) and $1,199 (€1,199 with Deore).
