Vertex Top End Piston Kit - Yamaha YZ 125
Part number: VTK22520B
$208.95
Description
Top end piston kit; includes: piston, rings, pin, circlips, top end gaskets, and wrist pin bearing when applicable. Specifications Cylinder Diameter: 54mm Displacement: 125cc Piston O.D.: 53.94mm Vehicle Fitment Yamaha YZ 125 (1998-2000) Vertex Pistons are precision-engineered for maximum performance and durability. Each kit is manufactured to OEM specifications with premium materials for a perfect fit. Backed by Vertex's quality guarantee.
Specifications
| compression ratio | STD |
|---|---|
| cylinder diameter | 54mm |
| displacement | 125cc |
| part type | Top End Piston Kit |
| piston od | 53.94 |
| vehicle type | Dirt Bike |
Listed vehicle applications
| Year | Make | Model | Notes |
|---|---|---|---|
| 2000 | Yamaha | YZ 125 | Catalog application: 2000 Yamaha YZ 125. Piston OD 53.94 mm; Cylinder 54mm. Top end piston kit; includes: piston, rings, pin, circlips, top end gaskets, and wrist pin bearing when applicable. Source: Vertex Pistons Catalog 1-21-2026. Reviewed 2026-09-23. |
| 1999 | Yamaha | YZ 125 | Catalog application: 1999 Yamaha YZ 125. Piston OD 53.94 mm; Cylinder 54mm. Top end piston kit; includes: piston, rings, pin, circlips, top end gaskets, and wrist pin bearing when applicable. Source: Vertex Pistons Catalog 1-21-2026. Reviewed 2026-09-23. |
| 1998 | Yamaha | YZ 125 | Catalog application: 1998 Yamaha YZ 125. Piston OD 53.94 mm; Cylinder 54mm. Top end piston kit; includes: piston, rings, pin, circlips, top end gaskets, and wrist pin bearing when applicable. Source: Vertex Pistons Catalog 1-21-2026. Reviewed 2026-09-23. |
Check the exact vehicle application and specifications before ordering. Ask HPE if a detail is missing.