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
• YZ125 1999-2000
• YZ125 2001
• YZ125 2002-2004

Kit contents and specifications

BWX — BWX Top-End Rebuild Kit-YZ125 '05-'21/YZ125X (Kit 757)

This kit includes:

• BWX OEM-type cast Piston Kit (including Rings, Gudgeon Pin & Circlips) – 276-PKC-90001A/B/C
• Top-End Gasket Set – 276-TGS6161
• Small-End Bearing Kit – 371-N1047

*** OEM-Type – 1 Ring Version ***

Wossner — Top-End Rebuild Kit-YZ125 1998 (Kit 1100)

This kit includes:

• Wössner Piston Kit (including Rings, Gudgeon Pin & Circlips) – 370-8091DA/DB/DC
• Top-End Gasket Set – 276-CGS2136
• Small-End Bearing – 371-N1011

Wossner — Top-End Rebuild Kit-YZ125 '99-'00 (Kit 43)

This kit includes:

• Wössner Piston Kit (including Rings, Gudgeon Pin & Circlips) – 370-8091DA/DB/DC
• Top-End Gasket Set – 276-TGS6138
• Small-End Bearing – 371-N1011

Wossner — Top-End Rebuild Kit-YZ125 2001 (Kit 44)

This kit includes:

• Wössner Piston Kit (including Rings, Gudgeon Pin & Circlips) – 370-8091DA/DB/DC
• Top-End Gasket Set – 276-TGS6138
• Small-End Bearing – 371-N1011

Wossner — Top-End Rebuild Kit-YZ125 '02-'04 (Kit 45)

This kit includes:

• Wössner Piston Kit (including Rings, Gudgeon Pin & Circlips) – 370-8072DA/DB/DC
• Top-End Gasket Set – 276-TGS6138
• Small-End Bearing – 371-N1043

Wossner — Top-End Rebuild Kit-YZ125 '05-'21/YZ125X 1-Ring (Kit 46)

This kit includes:

• Wössner Piston Kit (including Rings, Gudgeon Pin & Circlips) – OEM-type 1 Ring Version – 370-8160DA/DB/DC/D200/D400
• Top-End Gasket Set – 276-TGS6161
• Small-End Bearing Kit – 371-N1047

Wossner — Top-End Rebuild Kit-YZ125 '05-'21/YZ125X 2-Ring (Kit 893)

This kit includes:

• Wössner Piston Kit (including Rings, Gudgeon Pin & Circlips) – 2 Ring Special Enduro Version – 370-8302DA/DB/DC
• Top-End Gasket Set – 276-TGS6161
• Small-End Bearing Kit – 371-N1047

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!