Insert 7.20 cc – KTM 85SX (2025‑2026) / Husqvarna TC85 (2025‑2026) / GASGAS MC85 (2025‑2026)

The VHM AE32361‑F insert is engineered for riders who demand strong top‑end and over‑rev performance from their 85cc two‑stroke motocross engines. With a combustion chamber volume of 7.20 cc and designed to be used alongside a 12° piston, this insert lowers effective compression ratio compared to closer‑volume options—resulting in improved top‑end rpm, more aggressive rev behaviour, and better suitability for hard ground or fast‑track conditions. It must be used in combination with the matching VHM 12° piston and VHM cylinder head. The insert is easy to swap, includes engraved part identification, and interfaces precisely with the VHM head to ensure correct geometry, longevity and consistent performance under extreme conditions.

Key Features / Benefits:

• Insert with 7.20 cc volume designed to enhance top‑end rpms and over‑rev performance.

• Ideal for fast tracks, hard‑packed surfaces and riders seeking higher corner‑speed and rpm stability.

• Improved resistance to detonation and strong materials help ensure durability and consistent output.

• Simple to install in VHM head insert system—supports accurate tuning and adjustment.

Technical Specifications / Specifications:

• Type: Optional/High Over‑Rev Insert

• Combustion Chamber Volume: 7.20 cc

• Piston Height: +2.15 mm

• Squish Clearance: 0.80 mm

• Piston Crown Shape: Dome

• Compatible Bore: Ø 47 mm

• Usage Note: Must be used in conjunction with a VHM 12° piston and VHM cylinder head; not compatible with OEM head.