SHS Cylinder Head — AK Short Nozzle, Flat Pad
SHS Cylinder Head — AK Short Nozzle, Flat Pad
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DETAILS
DETAILS
- description
AK gearboxes take two nozzle lengths, and the cylinder head has to suit the one you are actually running. This is the short-nozzle head.
The flat pad is the face the piston head lands against. It absorbs the impact at the end of each stroke, which takes the harshness out of the sound and spares the parts either side of it.
Pads are consumable. They harden with heat over time, and a hardened pad stops doing the job it was fitted for.
Specifications
| Specification | Detail |
|---|---|
| Type | Cylinder head |
| Platform | AK |
| Nozzle length | Short |
| Damping | Flat pad |
| Material | 7075-T6 aluminium alloy, CNC machined |
| Sold as | Single cylinder head |
Good to know before you buy
Measure the nozzle you are replacing before ordering. Short and long AK heads are not interchangeable.
Frequently asked questions
How do I tell a short from a long AK nozzle?
Measure the one you removed. AK builds use both lengths and the difference is small enough to be easy to misjudge by eye.
What does the flat pad do?
It cushions the piston head as it reaches the end of its travel, which quietens the impact and reduces the shock passed into the gearbox.
Will the pad wear out?
Yes. Heat hardens it over time, and a hardened pad no longer absorbs much. It is a wearing part like any other.