TOP CAPS IN ALLOY FOR VALVE SPRINGS. ONE SET(8)
C-AEA528

£74.91 exc vat

£89.89 inc vat

In stockIn stock
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.

£74.91 exc vat

£89.89 inc vat

In stockIn stock

Recommended usage 1 x C-AEA528 to fit one mini.

Recommended products

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.

Alternative products

Original type steel 'S' competition top caps for dual springs.

If you are upgrading from single springs or just want to replace those old worn top caps, these better grade material are the best answer. Eight required per head.

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.

People also bought products

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.

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...

1.1" diameter intake valve for 948cc with 8.65mm wide groove for use with the original 88G616 top caps and 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.

160lbs on the nose at 400" for standard Cooper S or twin spring set ups. See C-AEA526 and C-AEA527 for later developed springs. These are ok for all standard uses but are improved and uprated over all original factory fitted...

Spacers for under the rocker pedestals are used mainly by engine tuners to allow tappet adjustment to be made where cylinder head mods have been carried out. 1.3mm/0.0512" thick, this can be used to hold locating screw on rocker post assembly but the...

Early Large cotter groove exhaust valve. Most small bore engines seem particularly prone to burning valves, it is highly recommended to replace the exhaust valves when you do a valve job! This 1.0" valve fits most early 948cc, 998cc and 1098cc engine...

We stock a limited range of Paul Ivey developed Rimflow valves for the A-Series.

30.9mm (1.217") diameter exhauste valve for 12G940 large bore casting is oversized to the stock version. Not only can you pick-up performance from...

1.311" (33.3mm) dia x 3.57 long intake valve.


Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. use the later narrow, single collet groove and current valve head shapes.


As ...

1.259" (32.00) dia x 3.57 long Exhaust valve.


Our race valves are produced in EN214N steel. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes.Heat treated to eradicate wear from unleade...

1.220" (31mm) dia x 3.57 exhaust valve.

Our race valves are produced in EN214N steel and are stellite tipped and use the later narrow, single collet groove and current valve head shapes.These valves are plasma heat treated to eradicate wear ...

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...

Actually 29.3mm (1.15") these valves are in EN214N steel with chrome plated stems for use in standard iron guides. Easily noticeable by their strange design shape they claim to give better flow characteristics.

Made in EN214N chrome plated stem for use with standard iron guides these valves claim to give better flow characteristics on standard engines.36.6mm (1.44")

chrome on en214N steel enables fitment of this valve to standard iron guides.

the flow characteristics of this valve are claimed to give better power when used on standard applications. 35.7mm)1.405") for 12G940 large bore casti...

Collet for the 3 groove valve. Sold per half and 2 required per valve.

These cotters go with AHU1897 top cap. On Turbo heads after engine number 102641 were fitted on the inlet only.

All early 850/997/998/1098cc heads u...

Pre A Plus exhaust valve using 88G459 small cotters. Uses AEA311 springs-25.4mm. For 850/998/1100cc. This valve is to a higher spec than the originals.

Inlet valve 1098cc with small cotter groove.29.2mm(1.15") and takes AEA311 spring.Sold singly 4 required per engine.