High-performance gravity-cast replacement piston kit engineered to restore top-end compression and crisp throttle response. 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
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Manufacturer Part Number: 175-23119A
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Brand Number: 23119A
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Component Type: Cast Replica Piston Kit (Includes piston, rings, wrist pin, and circlips)
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Size / Bore: Standard (53.93 mm)
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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 | 2005–2021 |
| Yamaha | YZ125X | Two-Stroke Off-Road / Enduro | 2020–2022 |
TSO Garage Note
An ideal top-end refresh component for keeping your late-model Yamaha YZ125 or YZ125X hitting the powerband cleanly. The precision-cast profile and coated skirt minimize friction and wear against the cylinder bore, making routine rebuilds straightforward and reliable.
