Steel decompression plate

Please specify your model during the purchasing process.

Compression with the shim and 2 original cylinder head gaskets is generally between 8:1 and 8.7:1 (NB: this value does not correspond to the pressure in bar found on a compressiometer). This decompression will allow you to reliably apply up to 1.5 bar of boost. (Of course, with the right engine settings).

Peugeot Citroën TU3 TU5 1.4L 1.6L - 8S et 16S

VW 1,8l

VW 2,0l

VW G40

VW G60

VW Lupo GTI

VW Polo 6N

VW VR6 12S

VW V6 24S- 2,8l

VW V6 - 3,2l R32

VW V5

Renault 1.2L D7F

Renault 1.8L 2.0L F7P R19 16S Clio 16S

Honda Civic EJ9

Honda D14 D15 D16

Ford Focus 2,0l Zetec

Ford V6 Probe

V8 (2 St.) 

Opel C20XE 2,0l

Opel  C20NE 2,0L

Opel C18XEL

Opel X20XEV

Opel X14XE

Opel C16 et X16 8S

Opel X16XE

Opel X18XE

Opel Z18

BMW E30 325  525

BMW E36 323 328

BMW E36 320 520

BMW E36 M3

BMW E36 318is

BMW E30 318

BMW E30 320

Mazda 323bg

Mazda MX 5 

Mercedes CLK 200 136PS

Mitsubishi 4G63 (evo)

If your vehicle isn't on this list, we suggest you look at our custom-cut aluminium cylinder head shims.