Vertex Top End Piston Kit - KTM 50 SX
Part number: VTK22813CD
$125.95
Description
Top end piston kit includes: piston, rings, pins, circlips, top end gaskets, and wrist pin bearing when applicable. Specifications Cylinder Diameter: 39mm Displacement: 50cc Piston O.D.: 39.47mm Vehicle Fitment KTM 50 SX (2006-2008) KTM 50 SX PRO JR (2001-2005) 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 | 39mm |
| displacement | 50cc |
| part type | Top End Piston Kit |
| piston od | 39.47 |
| vehicle type | Dirt Bike |
Listed vehicle applications
| Year | Make | Model | Notes |
|---|---|---|---|
| 2008 | KTM | 50 SX | Catalog application: 2008 KTM 50 SX. Piston OD 39.47 mm; Cylinder 39mm. Top end piston kit includes: piston, rings, pins, circlips, top end gaskets, and wrist pin bearing when applicable. Source: Vertex Pistons Catalog 1-21-2026. Reviewed 2026-09-23. |
| 2007 | KTM | 50 SX | Catalog application: 2007 KTM 50 SX. Piston OD 39.47 mm; Cylinder 39mm. Top end piston kit includes: piston, rings, pins, circlips, top end gaskets, and wrist pin bearing when applicable. Source: Vertex Pistons Catalog 1-21-2026. Reviewed 2026-09-23. |
| 2006 | KTM | 50 SX | Catalog application: 2006 KTM 50 SX. Piston OD 39.47 mm; Cylinder 39mm. Top end piston kit includes: piston, rings, pins, circlips, top end gaskets, and wrist pin bearing when applicable. Source: Vertex Pistons Catalog 1-21-2026. Reviewed 2026-09-23. |
| 2005 | KTM | 50 SX PRO JR | Catalog application: 2005 KTM 50 SX PRO JR. Piston OD 39.47 mm; Cylinder 39mm. Top end piston kit includes: piston, rings, pins, circlips, top end gaskets, and wrist pin bearing when applicable. Source: Vertex Pistons Catalog 1-21-2026. Reviewed 2026-09-23. |
| 2004 | KTM | 50 SX PRO JR | Catalog application: 2004 KTM 50 SX PRO JR. Piston OD 39.47 mm; Cylinder 39mm. Top end piston kit includes: piston, rings, pins, circlips, top end gaskets, and wrist pin bearing when applicable. Source: Vertex Pistons Catalog 1-21-2026. Reviewed 2026-09-23. |
| 2003 | KTM | 50 SX PRO JR | Catalog application: 2003 KTM 50 SX PRO JR. Piston OD 39.47 mm; Cylinder 39mm. Top end piston kit includes: piston, rings, pins, circlips, top end gaskets, and wrist pin bearing when applicable. Source: Vertex Pistons Catalog 1-21-2026. Reviewed 2026-09-23. |
| 2002 | KTM | 50 SX PRO JR | Catalog application: 2002 KTM 50 SX PRO JR. Piston OD 39.47 mm; Cylinder 39mm. Top end piston kit includes: piston, rings, pins, circlips, top end gaskets, and wrist pin bearing when applicable. Source: Vertex Pistons Catalog 1-21-2026. Reviewed 2026-09-23. |
| 2001 | KTM | 50 SX PRO JR | Catalog application: 2001 KTM 50 SX PRO JR. Piston OD 39.47 mm; Cylinder 39mm. Top end piston kit includes: piston, rings, pins, 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.