Piston Kit Ø 44.98 mm (12° Top) – KTM 65SX (2009‑2026) / Husqvarna TC65 (2017‑2026) / GASGAS MC65 (2021‑2026)
High‑performance piston kit from VHM featuring Ø 44.98 mm diameter and 12° dome‑top profile. Compatible with KTM 65SX 2009‑2026, Husqvarna TC65 2017‑2026 and GASGAS MC65 2021‑2026. Precision CNC‑machined for racing performance and longevity.
$115.99
Product Description
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:
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Diameter: Ø 44.98 mm
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Version: Special
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Piston Crown Shape / Top Profile: Flat top 12°
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Bore Size: Ø 45 mm
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Piston Pin Diameter: Ø 12 mm
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Engine Type: 2‑Stroke
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Coating: Yes (inside coating)
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Piston‑to‑Cylinder Clearance: Minimum 0.04 mm, Maximum 0.05 mm
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Piston Ring End Gap: 0.20 + 0.10 mm
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Usage Note: Must be used in combination with a VHM 12° insert and head.
| Make | Model | Year |
|---|---|---|
| GAS GAS | MC 65 | 2021 - 2025 |
| HUSQVARNA | TC 65 | 2017 - 2025 |
| KTM | 65 SX | 2009 - 2025 |



