Its official Athena have released a 160cc cylinder kit with a replacement ECU that corrects the ignition curve getting the very best performance capable from this pretty and popular bike.
The pictures we have available are extremely poor so we thought it best just to look at the bike instead until they arrive with us. What we can tell you is that the kit is very easy to install with no modification to crank casings etc, simply fit the cylinder kit and plug the ecu in and away you go.
Here's some tech spec, the kit uses a forged piston with a nickel coated aluminium barrel 65mm diameter. The official hp figures are below.