Replica Thruxton Cylinder Heads


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Produced as a replica 1966 Thruxton cylinder head with modern improvements.:

Colisbro valve guides

Unleaded valve seats

6R4 double coil springs

Ø2” head inlet valves with 5/16” stem

Standard exhaust valves

Steel valve caps and collets for 6R4 springs

Ported inlet tract

Machined for double coil springs

Machined for pushrod ‘O’ ring

Can be machined for a second spark plug

Complete cylinder head Price: £1,750

Squish combustion chamber Thruxton cylinder heads with 48mm inlet valve and 40mm exhaust valve, 7 mm stems, with 2 x 10mm spark plugs and compression ratios from 9:1 to 11:1 for use with KRT designed squish piston

Price £1,750

Now available: 1967 inspired Neil Kelly Isle of Man Works squish cylinder head and squish piston

Price £1,800


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