High-performance gravity-cast replacement piston kit engineered to restore top-end compression and crisp throttle response on standard bore cylinders. Manufactured from a high-silicone aluminum alloy with a friction-reducing Molybdenum Disulphide skirt coating for a faster break-in and extended component life.
Specs & Details
- Manufacturer Part Number: 175-22520A
- Brand Number: 22520A
- Component Type: Cast Replica Piston Kit (Includes piston, rings, wrist pin, and circlips)
- Size / Bore: Standard (53.93 mm)
- Material & Construction: Gravity-cast high-silicone aluminum alloy with T-5 heat treatment and MoS2 skirt coating
Two-Stroke Vehicle Fitment
| Make | Model | Engine Type | Year Range |
| Yamaha | YZ125 | Two-Stroke Motocross | 1998–2001 |
TSO Garage Note
An ideal top-end refresh component for keeping your Yamaha YZ125 hitting the powerband cleanly on a standard-bore cylinder. The gravity-cast profile and coated skirt minimize friction and wear against the bore, making routine rebuilds straightforward and reliable.
