Monday, September 26, 2022
HomeCyclingBMC Fourstroke prototype XC bike teases SRAM launch date

BMC Fourstroke prototype XC bike teases SRAM launch date


BMC’s full-suspension XC Fourstroke mountain bike seems set for a whole redesign if this prototype raced at MTB Worlds with the brand new SRAM Eagle AXS is something to go by. Plus, BMC appears to have casually let slip an actual timeline for the launch of that next-gen direct-mount SRAM Eagle AXS derailleur prototype we noticed on Nino’s Scott.

We’ll solely have to attend a month for the total particulars…

BMC Fourstroke all-new prototype XC bike

BMC Fourstroke unreleased prototype with BlackBox SRAM XX1 Eagle AXS SL derailleur detail

c. an nameless Bikerumor fan

On the UCI XC MTB World Championships final weekend in Les Will get, a few riders from the BMC MTB Racing staff had been noticed on a brand new and as-yet-unreleased carbon BMC Fourstroke prototype XC mountain bike, with all-new tube shaping and a reoriented shock format.

Plus, the bikes of those two racers additionally seem like constructed up with the identical direct mount BlackBox SRAM Eagle AXS derailleur prototype, the identical hole plate Eagle FlatTop SL (T-Kind) chain, and identical new XX1 SL Eagle cassette with 3 machined alloy cogs that we noticed on N1N0’s bike.

Try our Professional Bike Examine of 10x World Champion Nino Schurter’s setup for the total particulars of the whole lot we learn about that prototype SRAM Eagle AXS drivetrain – the patents we’d uncovered years again, the anticipated efficiency positive factors, and UDH compatibility.

Each Filippo Colombo & Titouan Carod had been on the brand new BMC Fourstroke prototype, with Filippo incomes an XCC podium & an XCO prime ten on the unreleased bike.

Curiously of be aware, Pauline Ferrand-Prevot opted to not experience the brand new bike, however to race the BMC Twostroke carbon hardtail as an alternative, with a view to profit from lighter weight and improved effectivity for the Les Will get climbs. That appeared like a great name as she went on to win the World Championship title in each brief observe XCC and Olympic distance XCO.

What do we all know? BMC Tech particulars

BMC Fourstroke unreleased prototype with BlackBox SRAM XX1 Eagle AXS SL derailleur, racing Worlds

c. Filippo Colombo, pictures by Maxime Schmid & 3SO L’Agence

BMC hasn’t shared any particulars on the brand new bike but. However the obvious shift for BMC who lengthy held the opinion {that a} vertical shock orientation yielded the very best efficiency… the unreleased BMC Fourstroke prototype strikes to a horizontal shock format.

It nonetheless seems to be a short-link 4-bar with a unified rear triangle and a tiny rocker driving the shock. However now the rear triangle has moved to a extra symmetric design with a vertical strut connecting seat & chainstays on each side of the bent seat tube, and a submit mount brake now on the seatstay.

The downtube drops a bit on the backside bracket, presumably to make extra room inside the principle triangle. These Fourstroke prototypes we’ve seen don’t seem to incorporate a cage mount on the seattube. However they do appear to have 5 water bottle bosses on the downtube. The racers at Worlds had only one bottle cage within the second-to-lowest place, however this certainly would permit for two bottles or a bolt-on software/spares service under a full-size water bottle?

BMC Fourstroke unreleased prototype with BlackBox SRAM XX1 Eagle AXS SL derailleur, racing UCI XCC World Championships

c. Filippo Colombo, pictures by Maxime Schmid & 3SO L’Agence

The brand new BMC Fourstroke prototype will get a steeper sloping toptube extra in step with the seatstays and appears to characteristic extra boxy tube shaping in its rear finish, with the identical pointed seatstay caps & hidden {hardware}. Up entrance, the principle triangle is a little more rounded than the present angular bike. The brand new bike retains the short-travel built-in RAD elliptical dropper seatpost, now in shiny silver ano, and strikes its inside cable routing from the underside of the downtube, as much as the edges of the headtube.

And naturally, it strikes to the brand new UDH-compatible (?) SRAM direct mount rear derailleur.

BMC Fourstroke unreleased prototype downtube detail

c. BMC

Regardless that it’s a utterly totally different suspension design in comparison with the present Fourstroke, we’re fairly positive it can maintain the identical title. How? These teaser photographs on BMC’s homepage are named “Fourstroke”.

BMC isn’t actually hiding the unreleased Fourstroke prototype very a lot both. In reality, the brand new bike is on their homepage now, and you’ll signal as much as be one of many first to get the total particulars:

Spot one thing particular in Les Will get? Signal as much as be the primary one to know.

BMC Fourstroke & SRAM Eagle AXS coming quickly?!

BMC Fourstroke unreleased prototype with BlackBox SRAM XX1 Eagle AXS SL derailleur coming October 5, 2022

c. BMC

Clicking BMC’s “Inform me extra” button takes you to a web page referred to as “The Remaining Countdown” with a clock counting down simply over a month left till the October fifth unveiling.

And see what’s peeking out of the underside of that photograph above on the finish of the brand new Eagle FlatTop SL chain?

That’s the brand new direct mount SRAM XX1 Eagle AXS derailleur!

However as an alternative of being stealthy all-black just like the BlackBox prototypes on Filippo Colombo’s new bike or the one raced by Nino Schurter… this one has polished alloy on the higher B-knuckle direct mount. That appears rather a lot like a completed consumer-ready product. So, it feels like SRAM goes to must launch it earlier than Oct 5, 2022 if this new BMC goes dwell in simply 32 days.

Tick, tock!https://bikerumor.com/all-new-bmc-fourstroke-01-gets-rad-with-integrated-80mm-oval-xc-dropper-post/present

BMC-Switzerland.com

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