Alongside Cube’s 2016 road bike introduction were their new and updated mountain bikes, bringing the high-end C68 carbon construction to the dirt.
Called HPC (high performance carbon), the Stereo models will get a two new carbon front triangle bolted to their alloy rear triangle. The high end one is called C68, which uses a squarer fiber strand, which reduces the amount of resin needed to fill in the space between round strands. The result is the same strength but using 68% carbon versus resin compared to a normal frame with ratios as low as 40% fiber to resin. The other frame type is C62 (62% fiber), plus an alloy model that saves about 400g compared to the prior alloy model by using thinner, lighter tubes and linkages with all excess material removed.
They also add nano particles to the C68’s resin, which stops cracks or delaminations between layers from spreading. Translation: better impact resistance.
The new Stereo bikes will come in a 120mm travel 29er, a 140mm with both 27.5 and 29er wheel sizes, and the 160mm 27.5 bike shown above. The 27.5″ 140 and 160 bikes get a Boost 148mm spaced rear end but standard forks, the 29er gets a Boost 29er fork, too (the differences in spec are due solely to availability of compatible parts).