Which insert for what▾
AE32071 inserts for the VHM head AA33057
CR85R '03 VHM standard: 2003
CR85R '03-04
CR85R '03-04 VHM standard: 2004
CR85R '03-04
CR85R '05-07
CR85R '05-07 VHM standard: 2005–2007
CR85R '05-07
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 85 R 03-07 – M 8.20 cc
SKU: AE32071-M
Insert (combustion chamber)
Price incl. VAT (23%)
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24-month warranty
on all parts
Which insert for what▾
AE32071 inserts for the VHM head AA33057
CR85R '03 VHM standard: 2003
CR85R '03-04
CR85R '03-04 VHM standard: 2004
CR85R '03-04
CR85R '05-07
CR85R '05-07 VHM standard: 2005–2007
CR85R '05-07
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 AA33057. Chamber volume 8.20 cc. 🔴 The insert fits ONLY the VHM head AA33057 — it cannot be fitted into the OEM head. For the stock (OEM) piston. Compared with the VHM standard (8.00 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 85 R (2003–2007).
