Genuine Mini Spares product as everything else on the market was poor fitting and unstable.

For Performance see 88G459EVO made in the USA by a Specialised Racing product company.

All the earlier heads used the 2A11 cott...

Lightweight hard anodised aircraft alloy top caps for single collet competition valves. Sold as a set of 8.

See titanium set [linkC-AEA528[/link] for ultimate race use with wils camshaft or heavy poundage springs.

Alloy 8 Port Head with valves/springs /top caps built up to take .500 thou cam lift with approximately 20.5cc combustion chamber.---Minispares have managed to get 148bhp and 120ft lbs of torque.

This is not a straight bolt on part so see [...

Similar to C-AHT463 with 35.7mm inlets but larger 31mm exhaust valves as per Cooper S original valve sizes. Using a brand new MPI casting and modified for earlier cars pre 1996 only . 22cc combustion chamber

Some companies call ...

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...

Spring seat shims (set of 4), 0.040" thick (1mm).

Spacer shims to increase valve seat pressure and overall spring rate.

These were also used on all the 8 port head valve seats to prtect the alloy seats from wear. (8 port now C-AHT36...

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.

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.

37mm(1.457") longer inlet valve for the 2012 on 8 port head only

for use with special guides these are plasma heat treated to eradicate premature wear from unleaded petrol



3.933" 99.898mm long

1.2"(31mm) intake valve for 12G295 Cooper head 998cc. Also a suitable upgrade for other small bore heads. These have the large collet groove 8.65mm (.340") 2A11 cotters which are now available as 2A11EVO. Correct grade exhau...

Originally fitted to Minifin rocker covers as standard Rover equipment, it will also fit almost every other rocker cover including our FP26 range and Minispares alloy covers. This improved cap has a large grip and an improved lock system...

Best quality 1" exhaust valve for small bore cylinder heads as fitted standard to 998 Cooper. Higher grade than AEA434. Has a large 8.65mm (.340") collet groove 2A11 cotters which are now available as 2A11EVO.

Sold individually.

To help rocker pad to valve stem alignment and reduce friction, the standard springs can be replaced with solid spacers and correctb shim set. The spacers and shim kit are sold as C-AEG392.

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...