Which insert for what▾
AE32297 inserts for the VHM head AA33184
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.
AE32384 inserts for the VHM head AA33184
VHM standard: 2T RACE 2025–2026
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 cylinder head Beta RR 125 2T 18-24 / Beta RR 125 2T Racing 19-24 / Beta RR 125 2T X-PRO 25-27 / Beta RR 125 2T RACE 25-26 + insert G 11.60 cc
SKU: AA33184-AE32384-G
Replaces part numbers: AA33184, AE32384-G
Insert (combustion chamber)
Need another insert for the head, e.g. for a different fuel? Inserts sold separately →
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Which insert for what▾
AE32297 inserts for the VHM head AA33184
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.
AE32384 inserts for the VHM head AA33184
VHM standard: 2T RACE 2025–2026
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.
HEAD AND INSERT INCLUDED: VHM head AA33184 + insert AE32384-G (combustion chamber 11.60 cc). Once fitted the head is ready to ride, nothing else to buy. Golden VHM two-stroke cylinder head with an exchangeable combustion chamber. It is designed to keep the engine's power throughout the whole race, not just the first laps: the improved water duct takes heat away from the combustion chamber more effectively. Made from a high-quality alloy and sealed with O-rings instead of a conventional gasket. WHAT THE INSERT IS AND WHY YOU NEED IT The VHM head has two parts: the golden cooled body and the chamber fitted into it — the insert. The insert sets the combustion chamber volume, i.e. the compression. Smaller volume = higher compression = more pull, but it needs higher-octane fuel. Larger volume = lower compression = the engine revs out more freely and tolerates pump fuel. When you change fuel, track or elevation you swap only the insert, not the whole head. WHICH INSERT TO CHOOSE (OEM piston) • AE32297-C — 10.80 cc, Beta RR125 2T '18-24, X-PRO '25 • AE32297-E — 11.00 cc, Beta RR125 2T '18-24, X-PRO '25 (VHM standard) • AE32297-F — 11.20 cc, Beta RR125 2T '18-24, X-PRO '25 • AE32384-B — 10.80 cc, Beta RR125 2T RACE '25-26, X-PRO '26-27 • AE32384-C — 11.00 cc, Beta RR125 2T RACE '25-26, X-PRO '26-27 • AE32384-E — 11.20 cc, Beta RR125 2T RACE '25-26, X-PRO '26-27 (VHM standard: 2T RACE 2025–2026) • AE32384-F — 11.40 cc, Beta RR125 2T RACE '25-26, X-PRO '26-27 • AE32384-G — 11.60 cc, Beta RR125 2T RACE '25-26, X-PRO '26-27 VHM STANDARD INSERT • AE32297-E (11.00 cc) • AE32384-E (11.20 cc) — 2T RACE 2025–2026 BENEFITS • more engine power • better heat transfer • more resistance to detonation • exchangeable combustion chambers Spare O-rings: seal kit SK33184. Fits: Beta RR 125 2T (2018–2024); Beta RR 125 2T Racing (2019–2024); Beta RR 125 2T X-PRO (2025–0); Beta RR 125 2T RACE (2025–2026).
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