Cylinder kit polini BIG EVOLUTION 70cc 12mm

CAD $499.99

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Only one year after having introduced the Evo 3, Polini already presents a new version. The basic features have been kept: coated aluminium cylinder with T-shaped exhaust port and 6 transfer ports, all in a proven design. The exterior, however, has been completely revamped, with a round shape and side cooling pockets. The cylinder comes with a one-piece head, which saves cost and is still reliable. Due to the new manifold with three connection points, not all exhaust systems can be used. The bore is still 47.6 mm so the 70cc limit on most racing tracks won't be exceeded. Depending on the carburettor and the other components used with the cylinder, you can expect performance to be in the region of 20 to 23 hp. Attention, this cylinder must be used with a crankshaft with 85mm connecting rod.

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  • Engine Type Minarelli Horizontal
  • Conrod Length 85mm
  • Piston Pin 12mm
  • Stroke 39.2mm
  • Displacement 70cc

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