Genuine Mini Spares valve stem oil seal manufactured with original Dupont Viton, as fitted to the twin points engines, are the best material and seal you can use and although expensive are the best to date in stopping the engine smoking.

Man...

35.7 x 29.5mm race valves in plasma-nitrided EN214N s/steel with manganese bronze valve guides. Nominal 21.4cc with by pass and heater take off holes open.

This specification of cylinder head, based on used core castings, is modified to curr...

35.7 x 29.5mm race valves in plasma-nitrided EN214N s/steel with manganese bronze valve guides, Nominal 21.4cc with by pass hose and heater take off holes open. This specification of cylinder head, based on used core castings, is modified to current...

35.7 x 29.5mm valves in plasma-nitrided EN214N s/steel with manganese bronze valve guides.Nominal 24-25cc with by pass and heater take off holes open. Supersport head-sold on an exchange basis-old core must be serviceable and no cracks--See [link]...

35.6 x 29.3mm valves in chrome stem with cast iron valve guides.

By pass hose tube and heater outlet open. This specification of cylinder head, based on used core casting, is modified in true Road sport style to maximise on-road performance ...

Approx 23.5cc combustion chambers for use with dished pistons. This specification of cylinder head is the only modified version for the small-bore based engines Mini Spares supply as it is judged to be the only one worth up-grading to. Based on used ...

35.7 x 29.5mm valves in plasma-nitrided EN214N s/steel with manganese bronze valve guides. Nominal 21.4cc with by pass and heater take off holes open. This specification of cylinder head, based on brand new twin point injection castings (modified to...

35.6 x 29.3mm steel valves with chrome stems and cast iron valve guides.

No by pass hose and blanked off heater outlet as per SPI heads

This specification of cylinder head is modified in true Road sport style to maximise on-road pe...

Victor Reinz large bore head gasket for A-series engines.

New competition valve cotter for early heads with the large single groove valve, these are precision CNC machined from 4340 and heat treated to a better spec than EN24T and claimed to be stronger in fatigue life.

These locate better in the v...

New competition valve cotter, these are precision CNC machined from 4340 and heat treated to a better spec than EN24T and claimed to be stronger in fatigue life.

These locate better in the valves and easier to control spring heights.

Unlike polished covers, these powder coated aluminum valve covers don't get that dingy look; simply wipe them and they're clean. (Fins and Mini Spares logo remain cast aluminum finish) And they're made to clear our hi-lift rockers. Available in ...

Set of strong lightweight titanium top caps to suit our valve springs C-AEA526/527 hard for single collet competition valves. Sold as a set of 8.

3 layer steel head gasket especially suitable for full race engines up to 73.5mm

bore where it has larger bore holes and considered the ultimate head gasket.

Especially recommended for 8 port heads as it has no fire/compression ring...

Genuine Mini Spares valve stem oil seal manufactured with original Dupont Viton, as fitted to the twin points engines, are the best material and seal you can use and although expensive are the best to date in stopping the engine smoking.

Man...

Standard inner valve spring lower collar, use C-AEA654.

These are no longer required when using our C-AEA526 and C-AEA527 range of silicone wire springs which are a slight interferance fit and friction ...

Minispares universal head kit includes a top quality GEG302 copper head gasket, valve cover gasket, manifold gasket, thermostat gasket,heater tap gasket,2x thermostat gasket 6x HS2 carb gaskets,3xHS4 carb gaskets,2x air clea...

Genuine version of the thermostat gasket for all A series. Black one side and red the other they are fitted black side to the head. Green to the thermostat.

We have no evidence as yet that they last longer but do look good.

See [lin...