Piston Kit Ø 44.98 mm (12° Top) – KTM 65SX (2009‑2026) / Husqvarna TC65 (2017‑2026) / GASGAS MC65 (2021‑2026)

The VHM APKT06521722D piston kit is engineered for maximum performance in 65 cc two‑stroke motocross engines. With a piston diameter of Ø 44.98 mm and a 12° dome‑top profile, this kit fits KTM 65SX (2009‑2026), Husqvarna TC65 (2017‑2026) and GASGAS MC65 (2021‑2026). The piston is 100% CNC‑machined from high‑quality material and features a non‑circular profile for improved sealing and durability. It must be used in conjunction with a VHM 12° insert and head to ensure proper combustion geometry and performance. Ideal for rebuilds, high‑performance upgrades or competition applications where precision and durability matter. 

Key Features / Benefits:

• Complete piston kit matched to Ø 44.98 mm diameter and 12° dome‑top profile.

• CNC‑machined premium material with non‑circular profile for enhanced sealing and durability.

• Compatible with KTM 65SX (2009‑2026), Husqvarna TC65 (2017‑2026) and GASGAS MC65 (2021‑2026).

• Designed for high‑performance, includes inside coating and supports long lifespan of high output. 

• Requires use with VHM’s 12° insert and head to achieve intended performance and geometry.

Technical Specifications / Specifications:

• Diameter: Ø 44.98 mm 

• Version: Special

• Piston Crown Shape / Top Profile: Flat top 12° 

• Bore Size: Ø 45 mm 

• Piston Pin Diameter: Ø 12 mm 

• Engine Type: 2‑Stroke 

• Coating: Yes (inside coating) 

• Piston‑to‑Cylinder Clearance: Minimum 0.04 mm, Maximum 0.05 mm 

• Piston Ring End Gap: 0.20 + 0.10 mm 

• Usage Note: Must be used in combination with a VHM 12° insert and head.