Want a bit more power from your air-cooled VW engine? This 87mm piston and cylinder kit bumps your 1500cc or 1600cc motor up to a 1641cc—no machine shop required! It's a slip-in design, so you can install it with basic tools. The kit includes four cast iron cylinders, four hypereutectic aluminum pistons, piston rings, wrist pins, and clips. Compression height is 39.5mm, and it's designed for the stock 69mm crankshaft stroke. Perfect for Beetles, Buses, or dune buggies looking for a reliable performance boost. Makes a noticeable difference in torque and responsiveness. Always check your engine's condition and follow proper break-in procedures. A classic upgrade for VW enthusiasts on a budget.