If you have a Caliber SRT-4 and you want to maximize the airflow into and out of your cylinder head, one thing that really helps is larger valves with a good valve job.
We cant help you with a valve job (your local machine shop can do that for you) but we can help you with the valves!
We have standard, or oem sized valves in stock, as well as 1mm oversize valves in stock for the Caliber SRT-4.
Photo of the valves below, click on the photo to jump to our website for more info.