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Pacbrake Vehicle Suspension for towing and load leveling
Dial in support for heavy loads with Pacbrake vehicle suspension for towing/load leveling. Adjustable air springs help keep rigs level, reduce chucking, and boost directional stability, with options like internal jounce bumpers for a smoother ride at low psi. These mount at the bump-stop location, so don't pair them with helper springs in the same spot, and support the axle if lifting by the frame.
No. They occupy the same mounting location on the axle and use the factory bump stop perch, so they can't be run together. Pick one system for support and adjustability. Verify your axle's bump stop style before deciding.
They help keep your vehicle and trailer level and can reduce chucking for more directional stability. Add air to counter rear sag and restore clearance when hauling or towing, then deflate when unloaded. If you notice creaks when not towing, check hardware torque and that no brackets or bushings are contacting where they shouldn't.
Ride can stay comfortable when set to low pressure, and some versions with internal jounce bumpers can smooth the ride even at zero psi. If you feel changes, fine-tune pressure to your preference. Keep an eye on clearances after adjustment.
Support the rear axle if lifting the vehicle by the frame. This helps prevent overextending the air bags. Let the tech know to keep the axle supported with stands or use a drive-on style lift.
Install is straightforward with clear instructions. It can be easier with rear tires off, but some do it on the ground. Watch for frame hard lines and existing gooseneck U-bolts that may interfere. Set the lower bracket and bag first, then the top bracket. Confirm clinch stud orientation. If swivel fittings leak, reseal or replace. Install stainless steel airlines during initial routing to save steps.