Athena Big Bore Cylinder Kit 70cc Bolt-On 2-Stroke Scooter

  

The Athena Big Bore Cylinder Kit is a bolt-on 70cc cylinder kit designed for 2-stroke scooters. It includes a complete aluminum cylinder with a nickel-carbide plated bore, cylinder head, forged piston, piston rings, 10mm wrist pin, circlips, carbon reeds, and all required top-end gaskets. The piston head is domed. Installation is bolt-on; no crankcase modifications are required. When the cylinder kit is disassembled, replace the gaskets with the specific Athena spare gasket kit rather than non-Athena replacement gaskets.

Athena recommends using their 17.50mm or 19.00mm scooter carburetor with this kit.