Welcome to Percy's High Performance Shop

Thank you for visiting our online store! Look around, make comments about our products, rate them and also find important information on our products. Have further questions call us 9-5p Central Time at 573-346-4409, 888-737-2970.

Percy's offers the best high performance gaskets around. Choose from our dead soft aluminum gaskets with the ultimate seal or opt for the high temperature xx carbon gaskets to avoid untimely blow outs.

Looking for an advantage on the track? Consider lightening the load with a lexan SpeedGlass racing windshield or a full set of SpeedGlass windows for a wide range of makes and models.

Are you obsessed with performance tuning? We have accelerator pump conversion kits, carburetor metering block kits and exhaust gas temperature gauges to help you get top performance out of your car.

Do you install tires and wheels or rebuild custom cars? We have a wheel and tire simulator tool to get the perfect measurements of your custom wheels and tires on the first try.