Welcome to Performance Unlimited, Inc.
Classic and performance racers and enthusiasts also turn to Performance Unlimited with confidence knowing that we will help them to achieve that winning edge – whether competing on the track, at a car show or for the hearts of car lovers on the road.
Whatever your automotive goals – reliability, financially efficient operation and/or speed and handling – Performance Unlimited offers unlimited performance.
Truck and High Performance Accessories
- Foreign and Domestic Auto Service and Truck Repair
- Fleet Vehicle Repair and Maintenance
- State of the Art Diagnostic Equipment
- Scheduled Maintenance under Auto and Truck Manufacturers Warranty (Any make, any model)
- Serving the Greater McHenry Area Since 1982
- We drop you off and pick you up so you don't miss important business and family appointments (within 10 miles of our shop located just north of McHenry - Click here for Map and Direction)
- Family Owned and operated - so we understand what it means when your car or truck fails
- ASE Certified Technicians - We proudly display our certificates
- 24,000 mile / 24 month warranty on all provided services
- Constant Continuing Education means we never fall behind new technologies
- 24 Point Vehicle Inspection - Ask for one. It’s FREE
AC Performance Check - $29.95 (50% off Regular price)
- Inspect hoses, lines, seals, connections and other components for leaks.
- Check temperature readings
- Check that your compressor and clutch is operating properly and inspect the drive belt for cracks or damage.
The air conditioning belt drives many other components in your vehicle, meaning a worn belt can have a much worse impact than simply an uncomfortable trip. It takes an expert to tell, so bring your car to us and let our ASCE experts give you the peace of mind knowing that your vehicle will keep you cooler and safer this summer.
NAPA Summer Savings - 20% Off on Struts and Shocks (Expires 7/31/15)
FREE TIRE ROTATION*
FREE BRAKE AND SAFETY INSPECTION*
*with non-discounted Oil Change
Shocks, Struts, Suspension, Spring Grove | Shocks, Struts, Suspension, Wonder Lake
shocks, struts, suspension, Johnsburg | shocks, struts, suspension, McCullom Lake