2017 BMC Fourstroke 02 XT Bike
2017 BMC Fourstroke 02 XT Bike
The BMC Fourstroke 02 works with the innovations developed for the Fourstroke 01, with a single critical change. The rear triangle has shifted from molded carbon-fiber to welded, triple-butted aluminum. It adds about 400g of weight, while improving durability and dropping the price.
And you still get all the great features designed into the Fourstoke01. That includes a BB92 bottom bracket, for greater frame strength and less weight, an integrated, adjustable chain catcher to protect the bottom bracket, an integrated chain guide under the right chain stay to keep the chain on no matter what, a replaceable aluminum anti-chainsuck piece, a tapered 1 1/8″ to 1 1/2″ headset, Natural Born Post Mounts on the left seat stay have replaceable nuts, mounts are designed for 160mm rotors, but can be adjusted to take up to 185mm rotors. The headset tapers from 1 1/8″ at the top to 1 1/2″ below. There’s a 142x12mm thru axle joining the two sides of the rear suspension for great lateral stiffness. Even the cable routing has been thought through. There are mounts for cables and brake hose underneath the down tube while there’s a way to internally route a cable for adjusting your seat post.
BWC, Big Wheel Concept, is the first point of thinking. This is BMC re-considering geometry to maximize the benefits of 29ers while minimizing any negatives. The result is an agile climber that is as comfortable picking lines while crawling uphill as it is ripping up an open descent. The keys are lower bottom bracket, longer top tube, shorter head tube, and more relaxed head angle. APS, Advanced Pivot System, is how they isolate the pedaling inputs from the trail-created inputs. The suspension is active whether you’re pedaling or coasting. And to tune it perfectly, you just sit on the bike and look down at the swingarm to find the Initial Load Indicator. Machined and painted lines on the arm that allow you to figure out where neutral is, and then tune for firm or soft.
The shocks are set up to give you 100mm of travel. They match the front and rear suspension from Fox. The dampers adjust via a knob for three different settings, Climb Trail Descend. It’s an easy twist to get the right rebound, and you can change the setting in an instant.
As with the Fourstroke 01, the 02 provides continuous exterior cable routing for your shifting and braking. You’ll find it tucked under the downtube, where the housing is held in place. There is, however, internal routing for a dropper post. You also get the sag adjustment indicators on the swingarm so you have a nice visual for tuning the sag.
The BMC Fourstroke 02 is when your ambition exceeds your budget.
Bottom Bracket Shimano
Brake Calipers Shimano SLX
Brake Levers Shimano SLX
Cassette Shimano SLX, 11-40
Chain Shimano CN-HG601
Crankset Shimano XT, 36/26
Fork Fox Float 32 SC, Performance Series, Grip, Remote, 100mm
Frame Material 01 Premium Carbon (F), Al-13 Triple-Butted Aluminum (R)
Front Derailleur Shimano SLX
Handlebar BMC MFB 02, 720mm
Pedals Not Included
Rear Derailleur Shimano XT, Shadow Plus
Rear Suspension Fox Float DPS, Performance Elite, Evol, Remote, 100mm
Rotors Shimano SLX, 160mm
Saddle Fizik Nisene XS
Seatpost BMC MSP 02
Shifters Shimano SLX
Stem BMC MSM 02
Tires Continental: X-King (F) / RaceKing (R), Performance Silver, 29×2.2
Wheel – Front DT Swiss X1900 Spline
Wheel – Rear DT Swiss X1900 Spline
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