- Premium AC4B bare aluminium design allowing custom valve and spring selection.
- Angled spark plug setup providing improved header clearance and efficient flame travel.
- Generous 200cc intake runner volume to support increased airflow demand.
- 64cc combustion chambers optimized for high performance street and track setups.
- Suitable for entry-level street performance revving reliably up to 6,500 rpm.
Designed for custom engine builders seeking flexibility, these bare AC4B alloy cylinder heads offer exceptional durability alongside a high-flow 200cc intake port and 64cc combustion chamber layout. The angled spark plug orientation enhances combustion chamber dynamics while improving header clearance in tight engine bays.