Valve kit Detroit 170cc 5.5mm stems
 Included:
- 28.5mm Inlet valve
 - 25mm Exhaust Valve
 
 
Hardened steel construction with pre set valve faces.
 You will still need to grind the valve faces to produce a proper fit with the head you intend to use them in.
 Dimensions:
 
- A = 71.2mm
 - B = 25mm exhaust
 - C = 28.5mm inlet