Insert KTM 300SX 2023 – 2025 / Husqvarna TX300 2023 – 2025 / GasGas EX300 2024 – 2025 (25.50cc)

The AE32339-C VHM insert, with a 25.50cc volume, offers a higher compression ratio compared to the standard insert. This results in stronger low and mid-range torque, which boosts acceleration and traction out of corners — ideal for tight or technical tracks.

It is specifically designed to fit the VHM cylinder head AA33210 and is quick and easy to swap, making it a versatile choice for riders who want to fine-tune their engine performance depending on track and weather conditions.

Use the VHM insert chart as a guideline for fuel type, elevation, and terrain to choose the right insert.

Key benefits:

• More bottom and mid-range power

• Improved corner-exit acceleration

• Quick to adjust

• Designed for VHM heads only

This insert is not compatible with OEM cylinder heads.

Specifications

• Type: Optional

• Volume: 25.50 cc

• Piston height: 0.00 mm

• Squish: 1.90 mm

• Piston crown shape: Flat top

• Bore: Ø72 mm