374M06800 Wiseco Piston Kit for Yamaha IT175 YZ175 1976-1981 68.00 mm

Wiseco .080 Piston Kit for Yamaha IT175 & YZ175

This Wiseco .080 piston kit is a 68.00 mm oversize piston assembly for Yamaha IT175 and YZ175 machines, cross-referenced as 374M06800, and it is built to restore compression and reliable top-end performance.

Overview

This Wiseco .080 piston kit serves as a 68.00 mm oversize replacement for Yamaha IT175 and YZ175 engines, giving worn top ends a fresh bore-matched piston assembly. The piston kit carries the 374M06800 reference and is intended for riders and mechanics rebuilding 1976 through 1981 two-stroke engines. Fitting a new piston kit like this restores sealing, compression, and dependable running after a rebore.

Built For Performance

• 68.00 mm oversize bore size for engines that have been rebored to the .080 step
• Wiseco forged piston construction built to handle two-stroke heat and load
• Reference number 374M06800 identifies the exact oversize application
• Kit format supplies the piston and matching components for one top-end rebuild
• Suited to the Yamaha IT175 and YZ175 engine family across 1976 to 1981

Fits These Machines

• for Yamaha IT175, 1976-1981
• for Yamaha YZ175, 1976-1981

On-The-Job Use

• Top-end rebuilds after a cylinder rebore to the .080 oversize
• Restoring compression on high-hour trail and enduro machines
• Race prep and refresh work on vintage motocross engines
• Workshop rebuilds where an exact oversize piston is required

Specs At A Glance

Good To Know

Q: Does this piston kit fit a standard bore cylinder? A: No, this is a .080 oversize piston at 68.00 mm, so the cylinder must be rebored and honed to match before installation.

Q: Is this an original Yamaha piston? A: No, this is a Wiseco piston kit made for Yamaha IT175 and YZ175 applications and is not an original equipment part.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.