Insert 6.80 cc – KTM 85SX (2025‑2026) / Husqvarna TC85 (2025‑2026) / GASGAS MC85 (2025‑2026)

The VHM AE32361‑025 insert is engineered for high‑performance two‑stroke 85 cc motocross engines in the 2025‑2026 KTM 85SX, Husqvarna TC85 and GASGAS MC85 when paired with a 12° piston and compatible VHM cylinder head. With a combustion chamber volume of 6.80 cc, this insert boosts the engine’s effective compression ratio, delivering greater low and mid‑range torque and sharper throttle response when exiting turns. While it sacrifices a bit of top‑end speed compared to lower‑compression options, it excels in tight or technical circuits and deep‑sand conditions. The insert is precision‑machined, engraved for identification, and installs directly into the VHM head. It is not compatible with OEM cylinder heads, making it ideal for serious performance build environments.

Key Features / Benefits:

• Insert with 6.80 cc volume for enhanced low and mid‑range torque.

• Suited for KTM 85SX (2025‑2026), Husqvarna TC85 (2025‑2026) and GASGAS MC85 (2025‑2026) when used with a 12° piston.

• Ideal for deep‑sand, technical tracks or riders prioritising throttle response and mid‑range power.

• Quick to adjust, high compression design, easy identification with part‑number engraving.

• Requires VHM head and 12° piston—no compatibility with OEM heads.

Technical Specifications / Specifications:

• Type: Optional / High‑Compression Insert

• Combustion Chamber Volume: 6.80 cc

• Piston Height: +0.50 mm

• Squish Clearance: 0.80 mm

• Piston Crown Shape: Flat Top 12°

• Compatible Bore: Ø 47 mm

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