Not exactly. BDS's instructions tell you that you may need to add blocks under the frame bumpers. Specifically, you want to prevent the fully collapsed shocks from bottoming before the axle hits the frame bumper. You can also use shorter shocks (factory compressed length) but with the higher ride, this may seem like too short a shock absorber. I think it's usual for these kits to supply longer shocks, and it's up to the installer to verify that they won't bottom out before the axle is stopped by the bumper. Any shocks with a compressed length longer than what the factory supplies will need spacers under the bumpers. Another option is to raise the upper shock mount above the frame rail and allow more collapsed length for the longer shocks.