Thick walled piston kit. Typically 92mm piston kits are a fairly thin walled cylider. These all new kits are extra thick wall to make a very strong engine. The case and heads must be bored out the same as for 94mm. Cast piston kit. Includes 4 pistons barrels rings and pins. Requires machining of case to fit the bigger diameter. Material Type: Cast Bore & Stroke: 92mm X 82 Engine Displacement: 2180CC92 X 82 Piston & Cylinder Kit Thick Wall