This product contains a chemical known to the state of California to cause cancer, birth defects, or reproductive harm.
https://www.p65warnings.ca.gov/Most towns have a public scale that you can use to weigh your car. If there isn t a public scale in your town, check with your local race track or truck stop.
In order to get the required weights for spring selection you must weigh your car in three different segments. Before weighing the vehicle be sure that it is race ready (driver on board, fuel tank filled, correct amount of ballast added). Roll the car onto the scale so that only the front tires are centered on the scale and record the scale reading. This is your front end weight. Next, roll the entire car onto the scale making sure that it is centered on the scale pad and again record the scale reading. This is your total weight. Finally, roll the car off the scale so that only the rear tires are centered on the scale pad and note the scale reading. This is your rear body weight. Now that you have all the necessary numbers you can determine which spring is correct for your application.