FX Engines K303 3-Port Sleeve, Piston & Conrod Set

The FX Engines K303 3-Port Sleeve, Piston and Conrod Matched Set (part number FX653004) is a precision assembly intended for servicing the FX Engines K303 nitro engine. Supplied as a matched set, the components are selected to work together for an accurate fit and consistent running, helping to restore compression and maintain smooth performance after extended use.

This set is suited to routine maintenance or full engine rebuilds where the sleeve, piston and conrod require replacement. For best results, follow the K303 engine manual for installation and break-in procedures, and ensure clean assembly practices throughout. A careful rebuild can extend engine life and keep your nitro RC running reliably.