Piston Kit Ø46.97 – KTM 85SX / Husqvarna TC85 / GasGas MC85 (2003–2026)

This 12° VHM piston is specially developed for maximum performance gain. It is engineered to work exclusively with a VHM 12° insert and cylinder head. The piston is fully CNC machined from high-grade material and features a non-circular profile, ensuring:

• High performance output

• Extended service life

• Consistent top-level power over time

It includes an internal coating and special Z-clips to reduce wear and improve efficiency. Designed for serious motocross riders seeking top engine responsiveness and durability.

Specifications

• Part number: APKT08521707C

• Diameter: Ø46.97 mm

• Version: Special

• Piston crown shape: Flat top 12°

• Bore size: Ø47 mm

• Piston pin: Ø14 mm

• Stroke: 2T

• Coating: Yes

• Piston-cylinder clearance: 0.05 mm

• Piston ring end gap: 0.20 + 0.10 mm