X4 2-stroke rocket
Wild Polish bike unveiledJJS Design from Poland has released pix and details of what is probably the wildest concept bike we've seen for a long time, called the JJ2S X4.
The machine is based around an extremely unusual X-configuration liquid-cooled and fuel-injected powerplant displacing around 500cc.
Bore and stroke dimensions are 56.4mm x 50, while it claims to produce a healthy 110 horses at 8000rpm. The injection is done by Synerject.
Its frame is relatively conventional, featuring a monoshock rear mated to USD fork up front and employing a steel lattice design. Braking is via single 320mm disc and six-piston calliper up front, matched to a 240mm disc and two-piston brake on the rear.
Basic dimensions are: Seat height 800mm, wheelbase 1341 mm, length 1955 mm, width 640mm, height 1138 mm and dry weight 155kg. The fuel tank holds 24lt. Tyres are 120/70-17 and 190/50-17.
We seriously doubt this one will make it into production, but would love to get a ride on it…
JJS Design
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