90.5mm / 92mm / GTV-2 Performance S Spring Cylinder head 40mm x 35.5mm Valves.

(Priced individually)
Manley stainless steel valves; 40mm inlet and 35.5mm exhaust 
Heavy-duty single valve springs with 3-groove collets
Chromoly retainers and 55cc combustion chambers
Upgrade your engine with this high-performance single spring cylinder head, designed for 90.5/92mm barrels and pistons. It features 40mm stainless steel inlet valves and 35.5mm stainless steel exhaust valves, ensuring durability and efficient airflow.
The head is equipped with heavy-duty single valve springs and 3-groove collets for enhanced valve control, along with robust Chromoly retainers. With 55cc combustion chambers and 12mm spark plug threads, it delivers optimal compression and ignition performance for your engine.
Combustion Chamber Volume: 56cc
Intake Port Volume: 56cc
Exhaust Port Volume: 66.5cc
Flow @ 25” vacuum
Valve lift - CFM
.100”  -  55CFM
.200”  -  87CFM
.300”  -  113CFM
.400”  -  130CFM
.500”  -  137CFM
.600”  -  141CFM
.650”  -  142CFM
Dimensions:
Width: 305mm
Height: 160mm
Depth: 205mm
Weight: 6.2kg
This Part Fits - Beetle, Karmann Ghia, Bay window, Split screen, Trekker, Type 3, Buggy