S55 Upgraded SSR M3/M4 4-Pin Keyed Crank Hub Kit m4 rear spoiler The addition of methanol injection

The addition of methanol injection is a powerful tool in reducing the intake air temperature

You now have the option to pair your Valved rear section with the best sounding mid pipe all in one place

Carbon fiber fender covers

they come with all the necessary hardware and gaskets

H&R Springs are shot-peened to increase their life by more than 200%

S55 Upgraded SSR M3/M4 4-Pin Keyed Crank Hub Kit m4 rear spoiler The addition of methanol injectionA required upgrade when chasing more power on your S55! This upgraded crankhub will give you the peace of mind and ability to chase more power without having to worry about the dreaded oem crank hub failure. Don't wait until it fails or worse causes engine failure. Upgrade your crank hub today and drive worry free! This kit includes all recommended components necessary in order to successfully remove and replace your stock S55 crank hub with an