Launched in October 2022, BMC’s Fourstroke has arrived at BikeRadar HQ for testing.
The brand’s cross-country mountain bike was updated with a new frame featuring refreshed geometry, increased water bottle capacity and a new suspension layout.
This is a race bike through-and-through, with 100mm of suspension travel on tap.
However, if you’re after a bike that’s more capable on gnarlier tech, BMC also launched a Fourstroke LT with 120mm of travel front and rear.
Let’s take a closer look at the build. A striking frame
The Fourstroke looks fast standing still and the frame sports BMC’s top-tier 01 level carbon fibre construction.
It uses BMC’s twin-link APS (Advanced Pivot System) suspension design, with the shock now sitting horizontally under the top tube rather than vertically.The frame is also visually different to its predecessor and is easily identifiable from the second vertical strut on the driveside. BMC claims this increases pedalling efficiency by 20 per cent.The bottom bracket area has also been beefed up and the bike can accept up to 2.4in mountain bike tyres.There are five strategically placed bottle cage bosses on the down tube, so you can fit up to two bottle cages. BMC says if you’re using two, they need to be side-loading and they can’t have a greater capacity than 550ml.The Fourstroke’s geometry has been updated too, with the head tube angle a degree slacker at 66.5 degrees.The effective seat tube angle has been steepened to 76.7 degrees. The reach is 457mm on a size medium and all sizes sport a […]
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