Cylinder Yamaha DT TZR RD 80 to 100cc Parmakit

The Italian manufacturer Parmakit offers us this fantastic cylinder for Yamaha DT Portugal with a square cylinder.
Equipped with a 2-ring piston with a 55mm diameter, it allows us to increase the displacement up to 100cc. Its more aggressive transfer distribution will increase the power of the engine. 

The Kit does not include the cylinder head; the original must be adapted.