Which insert for what▾
AE32068 inserts for the VHM head AA33053
VHM standard
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 250 SX 03-06 – F 21.00 cc
SKU: AE32068-F
Insert (combustion chamber)
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Which insert for what▾
AE32068 inserts for the VHM head AA33053
VHM standard
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 AA33053. Chamber volume 21.00 cc. 🔴 The insert fits ONLY the VHM head AA33053 — 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 250 SX (2003–2006).
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