Which insert for what▾
AE32281 inserts for the VHM head AA33171
VHM standard: OEM piston
for the VHM 12° piston
for the VHM 12° piston VHM standard: VHM 12° piston APKT08521707
for the VHM 12° piston
In general: smaller volume = higher compression = more pull but better fuel needed; larger volume = lower compression, the engine revs out more freely and tolerates pump fuel. If in doubt, take the standard.
Based on the VHM manufacturer charts.
VHM head insert KTM 85 SX / Husqvarna TC 85 18-24 / GasGas MC 85 21-24 – E 8.00 cc
SKU: AE32281-E
Insert (combustion chamber)
Price incl. VAT (23%)
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24-month warranty
on all parts
Which insert for what▾
AE32281 inserts for the VHM head AA33171
VHM standard: OEM piston
for the VHM 12° piston
for the VHM 12° piston VHM standard: VHM 12° piston APKT08521707
for the VHM 12° piston
In general: smaller volume = higher compression = more pull but better fuel needed; larger volume = lower compression, the engine revs out more freely and tolerates pump fuel. If in doubt, take the standard.
Based on the VHM manufacturer charts.
Exchangeable combustion chamber (insert) for the VHM cylinder head AA33171. Chamber volume 8.00 cc. 🔴 The insert fits ONLY the VHM head AA33171 — it cannot be fitted into the OEM head. For the stock (OEM) piston. This is the VHM standard insert for this head — the default choice if you are not sure which one to pick. Quick to change — the insert simply sits in the head and seals with O-rings. The last characters of the part number are engraved on the insert, so you cannot mix them up. Fits: KTM 85 SX (2018–2024); Husqvarna TC 85 (2018–2024); GasGas MC 85 (2021–2024).
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