Which insert for what▾
AE32059 inserts for the VHM head AA33041
VHM standard: YZ85
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 Yamaha YZ 80 99-01 / YZ 85 02-18 – K 8.40 cc
SKU: AE32059-K
Insert (combustion chamber)
Price incl. VAT (23%)
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Which insert for what▾
AE32059 inserts for the VHM head AA33041
VHM standard: YZ85
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 AA33041. Chamber volume 8.40 cc. 🔴 The insert fits ONLY the VHM head AA33041 — 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: Yamaha YZ 85 (2002–2018); Yamaha YZ 80 (1999–2018).
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