Vertex Full cast size A Piston kitYAMAHA 250 YZ 250 - 1988 - 1991Ref : 9417DA / 1095108001

Replace your worn piston with this VERTEX cast piston, specially designed for Yamaha YZ250 models from 1988 to 1991. Made of aluminum, this oversized A piston is suitable for cylinders bored to 68.00 mm and features a piston diameter of Ø 67.94 mm. It maintains the original compression ratio (standard), making it easier to restore the engine without altering ignition or carburetion settings.

• Manufacturer reference: 22154A
• Brand: VERTEX
• Type: Cast aluminum piston
• Piston diameter: Ø 67.94 mm (oversize A)
• Recommended bore diameter: 68.00 mm
• Compression: Standard

Designed for the Cross environment, this piston is aimed at riders who are repairing or rebuilding their engine after wear or boring. Before installation, check the condition of the cylinder, replace rings and pin if necessary, and adhere to the piston/cylinder clearances recommended by the manufacturer. Compatible notably with Yamaha YZ 250 models (1989–1991).

• YAMAHA YZ 250 (1991 - 250 cm3)
• YAMAHA YZ 250 (1990 - 250 cm3)
• YAMAHA YZ 250 (1989 - 250 cm3)