Yamaha Grizzly 660 [PROX] – Piston kit for 4-stroke

PROX piston kit for Yamaha Grizzly 660

The PROX piston kit has been specially developed for the 4-stroke engine of the Yamaha Grizzly 660. It consists of a piston kit that contains all the necessary components for replacing or repairing the piston.

Technical features

• Brand: PROX
• Engine type: 4-stroke
• Displacement: 660 cm³
• Bore size: 100.00 mm (standard, no oversize)
• Piston skirt: uncoated
• Piston shape: flat at the top (mirror head)
• Compression ratio: 9,2:1
• Material: Aluminum alloy, cast
• Number of pieces: Kit (piston and rings)

Product description

The cast aluminum alloy piston is designed for use in the Yamaha Grizzly 660 4-stroke engine. The uncoated surface of the piston skirt ensures proven functionality and compatibility with the original cylinder liners. The hole size corresponds to the standard dimension of 100.00 mm, which means that no oversize machining is required.

The piston's flat top shape supports the 9.2:1 compression ratio, designed to balance engine performance and reliability. In addition to the piston, the piston kit also includes the appropriate piston rings to ensure optimal sealing in the combustion chamber.

This piston kit is part of the ENGINE GROUP and belongs to the PISTON + RING KITS product category. It is suitable for replacement during maintenance or repairs on the engine of the Yamaha Grizzly 660 to maintain the functionality and performance of the vehicle.