Complete Cast Piston Kit Side A by Prox
This PROX cast piston kit is designed for the maintenance of Honda CR 250 R motocross engines. Its aluminium construction, 66.34 mm diameter, and side A oversize are suitable for the standard replacement intended for this engine. The MoS2 skirt treatment reduces hot friction and supports the break-in of the part.
Design and Materials
- The aluminium construction provides a part suitable for replacing the original piston.
- The cast design with a domed head features a geometry tailored for the Honda CR 250 R engine.
Installation and Assembly
- The 66.34 mm diameter and side A oversize simplify the selection of a piston that matches the cylinder dimensions.
- Checking the condition of the cylinder and the piston-cylinder clearance helps ensure the necessary tolerances for installation.
- Installation by a mechanic or knowledgeable enthusiast promotes adherence to tolerances and engine timing.
- The compatible replacement parts for associated maintenance include segments 260253, pin 032042, clips CP1812, and needle cage 400403.
- Manufacturer reference 01.1315.A
Usage and Performance
- The MoS2 skirt treatment limits hot friction and eases the initial break-in kilometres.
- The reed machining enhances adaptation to the transfer passages specific to motocross engines.
Examples of Compatible Motorcycles
- HONDA CR 250 R (1994 - 1996)
Complete list of compatible motorcycles available in the dedicated section below
