Which insert for what▾
AE32150 inserts for the VHM head AA33103
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 144 SX 07-08 / 150 SX 09-15 – F 13.80 cc
SKU: AE32150-F
Insert (combustion chamber)
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Which insert for what▾
AE32150 inserts for the VHM head AA33103
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.
Description
Exchangeable combustion chamber (insert) for the VHM cylinder head AA33103. Chamber volume 13.80 cc. 🔴 The insert fits ONLY the VHM head AA33103 — it cannot be fitted into the OEM head. For the stock (OEM) piston. Compared with the VHM standard (13.60 cc) it has a larger volume, i.e. lower compression: better over-rev and more top speed at the cost of bottom-end response. It also tolerates lower-octane fuel. 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 144 SX (2007–2008); KTM 150 SX (2009–2015); KTM 150 XC (2009–2015).
Compatibility (2)
Specifications
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