Street Touring - S
If your car is a normally aspirated sedan (four seats, four factory seatbelts, not sports-car derived) of 3.1 Liters or less, or one of a few small turbocharged cars specified in the rules, and perhaps prepared further than allowed in Stock Category, it may be eligible for one of the Street Touring Classes. Street Touring is an SCCA National class. Street Touring allows anything allowed in Stock, plus (roughly) these modifications:

* Any shocks, struts, and springs, using original attachment points
* Any sway bars
* Any wheels up to 7.5" in width that fit over stock brakes
* Tires up to and including a width of 225, with a treadwear rating of 140 or greater.
* Strut bars/braces as allowed in Street Prepared.
* Exhaust system downstream of catalytic converter(s)
* Short throw shift kits
* Spoilers, body kits, rear wings, etc.
* Pedal kits and other interior cosmetic accessories
* Alternate brakes pads and linings
* Any fully padded and upholstered front seats with reclining seat backs
* Removal of factory trim (rub strips, emblems)
* Alternate steering wheels of any diameter, otherwise meeting Stock rules
* Cross drilled and/or slotted brake rotors
* Alternate air cleaner enclosures
* No limited slip differentials except factory viscous coupler type units
* Stock brake calipers/drums
* Fenders may not be cut or flared (but specific modifications for tires OK)
* Emission-legal headers
* Emission legal modifications to Engine management system, either electronic or mehanical, but not both.
* Engine and transmission must remain unmodified, including emissions equipment