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VHM Cylinder Head Insert blank for GAS GAS EC 300 and RIEJU MR 300 2018-2022
€72.90
Tax Included
VHM cylinder head insert for GAS GAS EC 300 and RIEJU MR 300 from 2018 to 2022. Each version shows its three key figures: chamber volume, piston height and squish.
The VHM AE32320-A cylinder head insert is designed for GAS GAS EC 300 and RIEJU MR 300 from 2018 to 2022. On a VHM cylinder head, the combustion chamber is an interchangeable insert (or dome). Changing the insert changes the chamber volume, and therefore the compression ratio, without modifying the head: you adapt the engine to the fuel, the terrain and your riding.
Key features
- Each version shows its three key figures: chamber volume, piston height and squish.
- Change the compression without machining the head, to suit the fuel and the terrain.
- Part number engraved on the insert.
- Fits VHM cylinder heads only.
Specifications
- Brand: VHM
- Manufacturer part number: AE32320-A
- Engine: 2-stroke
When to change the insert?
- Switch to a different fuel (98 or race fuel with a higher octane rating).
- Engine knocking (pinking) or running hot: compression too high for the fuel.
- You want more torque on tight or sandy terrain.
Change the insert when you change fuel or type of riding, or if the engine pinks. The insert's three dimensions (volume, piston height, squish) must match your engine.
Fitting tips
- The insert is changed with the cylinder head removed.
- Check that the actual height of your piston at top dead centre matches the figure given for the insert.
- Replace the VHM head O-rings every time you take it apart.
- Check the squish with solder wire before riding.
- Tighten the head to the recommended torque, in a criss-cross pattern and in several stages, then fit a new spark plug.
Why VHM?
Since 1995, VHM has been designing racing engine parts for two-strokes: cylinder heads with interchangeable inserts, combustion chamber inserts, crankshafts and connecting rods. A specialist brand, used to fine-tune an engine's power without transforming it.
Spare parts and items to plan
- VHM head O-rings : VHM SK33000.VITON · VHM SK33000
- Spark plug : NGK
- Coolant : LIQUI MOLY 1 L · TWIN AIR
Frequently asked questions
Will it fit my original cylinder head?
No: VHM inserts only fit VHM cylinder heads.
Which version should I choose?
Choose according to your engine and fuel.
Compatibility
Check the exact model and year of your bike in the list below before ordering.
Fits:
GAS GAS EC 300 2019
GAS GAS EC 300 2018
RIEJU MR 300 2022
RIEJU MR 300 2021
Click on your bike to see all compatible parts.
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VHM cylinder head insert for GAS GAS EC 300 and RIEJU MR 300 from 2018 to 2022. Each version shows its three key figures: chamber volume, piston height and squish.
VHM Cylinder Head Insert blank for GAS GAS EC 300 and RIEJU MR 300 2018-2022
€72.90
Tax Included