The dual-rate design handles this well. Because there are two discrete rates, the firmer secondary rate is stiff enough to prevent excessive sagging when extra weight goes into the back. So a full cabin or a loaded trunk does not collapse the rear the way a soft single-rate spring might. To cut body roll further, many owners add the adjustable front and rear sway bar set alongside these springs.
With real reviews from real customers, shop UP products for your Tesla Model S, 3, X, Y and Cybertruck with confidence. Leave reviews and earn up to 2000 UP Rewards points each, redeemable towards exclusive UP Products.