Kartboy Oil Cap Delrin Black - Subaru WRX / STI VA WRX / STI Differentials The effect is similar to

The effect is similar to a lighter flywheel

StopTech offer a wide selection of replacement

This does NOT replace the OEM direct injection system

we found a great solution in the form of the PERRIN Turbo Sump Restrictor

Kartboy Oil Cap Delrin Black - Subaru WRX / STI VA WRX / STI Differentials The effect is similar toFor those of you who want a stylish OEM oil cap replacement, Kartboy has provided the masses with their delrin oil cap. These will complement your engine bay, and unlike other aftermarket oil caps that can be harsh to the touch, these are made out of delrin plastic. These can be removed with ease, and come equipped with a new O ring