Complete package including the matching engine oil seal kit. Choose the piston brand, model, year, piston size and kit specification from the Brand dropdown. Kit contents vary by option. Check the selected application, piston size and included components before ordering.

Applicable models

• YZ125 2005-2021
• YZ125X 2020-2022
• YZ125 1998-2000
• YZ125 2001
• YZ125 2002-2004

Kit contents and specifications

BWX — BWX Engine Rebuild Kit-YZ125 '05-'21/YZ125X '20-'22 (Kit 758)

This kit includes:

• BWX OEM-type cast Piston Kit (including Rings, Gudgeon Pin & Circlips) – 366-PKC90001A/B/C
• Complete Gasket Set – 276-CGS2161
• Conrod Kit (including Big & Small-End Bearings, Thrust Washers & Crank Pin) – 277-TA-6020
• Crank Bearing Kit – 340-CBK062Y

*** OEM 1 Ring Version***

Additional included oil seal kit

• Engine Oil Seal Kit – 276-ZKM8252 (all engine oil seals)

The matching oil seal kit is included in the displayed package price.

Wossner — Engine Rebuild Kit-YZ125 '98-'00 (Kit 47)

This kit includes:

• Wössner Piston kit (including Rings, Gudgeon Pin & Circlips) – 370-8091DA/DB/DC
• Complete Gasket Set – 276-CGS2136
• Conrod Kit (including Big & Small-End bearings, Thrust Washers & Crank Pin) – 277-TA-6013
• Crank Bearing Kit – 340-CBK024Y

Additional included oil seal kit

• Engine Oil Seal Kit – 276-ZKM8114 (all engine oil seals)

The matching oil seal kit is included in the displayed package price.

Wossner — Engine Rebuild Kit-YZ125 2001 (Kit 48)

This kit includes:

• Wössner Piston Kit (including Rings, Gudgeon Pin & Circlips) – 370-8091DA/DB/DC
• Complete Gasket Set – 276-CGS2138B
• Conrod kit (including Big & Small-End Bearings, Thrust Washers & Crank Pin) – 277-TA-6010
• Crank Bearing Kit – 340-CBK025Y

Additional included oil seal kit

• Engine Oil Seal Kit – 276-ZKM8172 (all engine oil seals)

The matching oil seal kit is included in the displayed package price.

Wossner — Engine Rebuild Kit-YZ125 '02-'04 (Kit 49)

This kit includes:

• Wössner Piston Kit (including Rings, Gudgeon Pin & Circlips) – 370-8072DA/DB/DC
• Complete Gasket Set – 276-CGS2138B
• Conrod Kit (including Big & Small-End Bearings, Thrust Washers & Crank Pin) – 277-TA-6010
• Crank Bearing Kit – 340-CBK025Y

Additional included oil seal kit

• Engine Oil Seal Kit – 276-ZKM8172 (all engine oil seals)

The matching oil seal kit is included in the displayed package price.

Wossner — Engine Rebuild Kit-YZ125 '05-'21/YZ125X 1-Ring (Kit 50)

This kit includes:

• Wössner Piston Kit (including Rings, Gudgeon Pin & Circlips) – OEM-type 1 Ring Version – 370-8160DA/DB/DC
• Complete Gasket Set – 276-CGS2161
• Conrod Kit (including Big & Small-End Bearings, Thrust Washers & Crank Pin) – 277-TA-6020
• Crank Bearing Kit – 340-CBK062Y

Additional included oil seal kit

• Engine Oil Seal Kit – 276-ZKM8252 (all engine oil seals)

The matching oil seal kit is included in the displayed package price.

Wossner — Engine Rebuild Kit-YZ125 '05-'21/YZ125X 2-Ring (Kit 894)

This kit includes:

• Wössner Piston Kit (including Rings, Gudgeon Pin & Circlips) – 2 Ring Special Enduro Version – 370-8302DA/DB/DC
• Complete Gasket Set – 276-CGS2161
• Conrod Kit (including Big & Small-End Bearings, Thrust Washers & Crank Pin) – 277-TA-6020
• Crank Bearing Kit – 340-CBK062Y

Additional included oil seal kit

• Engine Oil Seal Kit – 276-ZKM8252 (all engine oil seals)

The matching oil seal kit is included in the displayed package price.

Images are for illustration purposes only, actual products may differ.

NB:
Pease note that because we sell across multiple platforms, stock availability cannot be guaranteed. If an ordered item is out of stock, it will be placed on backorder and dispatched as soon as it arrives. If an item is permanently unavailable, we will issue a full refund.

Additionally, as most of our products are imported, final pricing is subject to change without notice due to fluctuating exchange rates and shipping costs.

We appreciate your understanding and always strive to process and ship your orders as quickly as possible!