Disclaimer
StanceMath calculators give estimates from the numbers you enter. They do not know your exact vehicle, suspension, brakes or tire brand and cannot guarantee fitment. Sounds are synthesized approximations, not recordings of any product. Prices, hours, power and loudness figures are illustrative planning estimates. Always confirm with your seller or installer.
Laws
In the US, removing, bypassing or disabling emissions equipment on a road vehicle, or selling or installing parts that do so, violates the Clean Air Act, and many states add their own rules. Exhaust noise, window tint and lighting (for example underglow) are regulated by state. Track-only parts are for closed-course use.
Affiliate disclosure
Some links may be affiliate links. If you buy through them we may earn a commission at no extra cost to you. This never changes calculator results.
Privacy
The calculators run in your browser. Inputs you type, and any audio file you play, stay on your device. We do not use cookies for the free tools. If you activate a Pro license, the key is stored in your browser (localStorage) so you stay unlocked. If analytics or ads are added later, this page will be updated first.
Trademarks
Vehicle and brand names are used only to describe compatibility and belong to their owners. StanceMath is not affiliated with any manufacturer.