Pennock Ported CR460/CR470 Cylinder Kit

We partnered with David Pennock to bring you this track-proven, race-winning cylinder kit, carefully cut to optimize flow inside the combustion chamber for maximum performance from your case reed engine.

Includes:
Filled GP460 cylinder,
Modified GP460 Piston
Snap Rings
Base gasket(s)

Block-off plate NOT included

Please choose the product variant that matches your engine's crankshaft.
GP460 with a stock crankshaft (46cc)
GP460 with a 1mm stroker crankshaft (47cc)