4752M05450 Wiseco Piston Kit for Yamaha TTR125 2000-2023 .020 54.50mm

Wiseco .020 Piston Kit for Yamaha TTR125

This Wiseco .020 over piston kit for Yamaha TTR125 runs a 54.50 mm bore with an 11:1 compression ratio, cross-referencing OEM part 4752M05450 for a precise top-end rebuild.

Overview

This Wiseco .020 piston kit for Yamaha TTR125 is a forged replacement assembly made to bring a worn top end back to life. The 54.50 mm bore and 11:1 compression ratio suit riders who want a modest overbore with reliable power. It fits 2000 through 2023 TTR125 models and works well for both shop and home rebuilds.

Built For Performance

• Forged piston construction for durability under heat and load
• 54.50 mm bore with .020 oversize for a light cylinder clean-up
• 11:1 compression ratio for consistent, responsive power
• Kit includes piston, rings, wrist pin, and circlips
• Cross-references OEM part 4752M05450
• Built for the Yamaha TTR125 engine family

Fits These Machines

• for Yamaha TTR125 (2000-2023)
• for Yamaha TTR125E (2000-2023)
• for Yamaha TTR125L (2000-2023)
• for Yamaha TTR125LE (2000-2023)

On-The-Job Use

• Top-end rebuilds on trail and play bikes
• Cylinder refresh when a light overbore is needed
• Restoring lost compression on a tired engine
• Part of a full engine service or rebuild

Specs At A Glance

Good To Know

Q: Will this piston drop into a stock cylinder? A: No, the .020 oversize piston requires the cylinder to be bored and honed to 54.50 mm for correct clearance.

Q: Are rings and pin included? A: Yes, the kit ships with the piston, rings, wrist pin, and circlips, though gaskets are sold separately.

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