GSC SRT4 S1 Billet camshafts
For Caliber SRT4 and EVO X
The GSC billet S1 cams are designed for those with the stock turbo up to the 550 HP range. These cams will not sacrifice any bottom end loss over stock cams; nothing but gains, and will promote faster spooling of the upgraded turbos. Gains of 20-50 WHP (depending on turbo) have been seen by simply bolting the S1 cams in.
* Upgraded valve spring required for Caliber SRT4