£4,200.00 – £5,250.00
Standard compression cylinder head, assembled with new valves, guides and springs.
Studs and gaskets not included.
Revised port design for improved air/fuel mixing and additional strengthening features to prevent common failure stress cracks.
*High compression design available upon request. For oversized piston diameter, valve diameter and port re-design. Contact for further details
Standard compression cylinder head, assembled with new valves, guides and springs.
Studs and gaskets not included.
Revised port design for improved air/fuel mixing and additional strengthening features to prevent common failure stress cracks.
*High compression design available upon request. For oversized piston diameter, valve diameter and port re-design. Contact for further details
| Cylinder Head Option | Riley 9 – Fully Assembled, High Performance Cylinder Head – Fully Assembled |
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