40mm - 47mm intake port

36mm - 41.5mm exhaust port

49mm - 53mm intake valve

41.5mm - 42.5mm exhaust valve

Ev8 stainless 8mm lightweight intake valves

Inconel 8mm lightweight exhaust valves

Hardened ductile iron intake valve seats

B5 copper exhaust valve seats

12mm or 14mm spark plugs

86 - 90 cc chamber volume

Ceramic coated exhaust ports or full coating
(available upon request)

Nirist fire rings (optional)