Cycle News

Cycle News 2019 Issue 30 July 30

Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles

Issue link: https://magazine.cyclenews.com/i/1149641

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PATON S1-R LIGHT WEIGHT TRACK TEST R I D E R E V I E W P92 Strange to see a modern bike with twin rear shocks, right? the crank produced by the stock Kawasaki motor there's an intermediate level of performance for street versions of the S1-R, whose mildly breathed on DOHC 180-degree motor (one-up/one-down, piston-wise) produces 82 hp at 8500 rpm at the rear wheel. That's significantly more than the stock Japanese engine, thanks mainly to the exquisitely-made, freer-flowing SC Project 2-1 titanium exhaust. But the kitted engine fitted to the test bike I rode also benefitted from Pistal pistons lifting the compression ratio to 12.5:1 from the stock 11.3:1, together with some light im- provements to the cylinder head aimed at enhancing gas flow and combustion. The ER6's twin 38mm throttle bodies are retained with a single injector per cylinder, together with the stock Kei- hin ECU, but this is fitted with a Power Commander to help get the best out of the SC Project pipe. Torque is up signifi- cantly, too, even with stock camshafts fitted, with 64 lb-ft available at 7000 rpm. (Left) The streetbike will deliver 82 hp, whereas Dunlop's racer will reach a comparatively massive 112 hp. (Below) The package is let down somewhat by the standard Kawasaki dash.

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