Which insert for what▾
AE32104 inserts for the VHM head AA33083
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 Honda CR 125 R 05-07 – E 11.40 cc
SKU: AE32104-E
Insert (combustion chamber)
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Which insert for what▾
AE32104 inserts for the VHM head AA33083
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 AA33083. Chamber volume 11.40 cc. 🔴 The insert fits ONLY the VHM head AA33083 — it cannot be fitted into the OEM head. For the stock (OEM) piston. Compared with the VHM standard (11.20 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: Honda CR 125 R (2005–2007).
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