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Tools and Calculators
Use an online version of the same tools we use in-house.
Wheel Dimension and Tire Width Calculator
If you know your wheel width and offset, we’ll give you a good estimate of your Front-space, Back-space, Total Wheel Width, and Tire Width Recommendations
Tire Height Calculator
Estimate the tire height of up to 6 different tire sizes at once.
Injector Size Calculator
If you know your maximum Horsepower at the crank and your fuel type, this tool estimates your best injector size.
Gear Ratio Finder
>> COMING SOON
Find the best gear ratio for your differential, based on your desired redline at a certain speed.
Coil-over Tension Conversion - KGS to Lbs
>> COMING SOON
If you’re an American, you may not understand the metric system. Enter KGS/mm to get your coil-over’s tension in Lbs.
Header Port-Size Calculator
>> COMING SOON
Calculate the correct header size for your engine based on where you want your peak horsepower.

