Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88347Air LiftOriginal price was $887.99. Current price is $643.99.In Stock
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LoadLifter 5000 ULTIMATE with internal jounce bumper to absorb shock for best ride comfort
Adjustable air spring kit for leaf springs
Rear
Safely run w/zero air pressure
LoadLifter 5000 ULTIMATE adjustable air spring kits feature all of the benefits of our heaviest rated air spring with the addition of an internal jounce bumper inside the spring for the ultimate in ride comfort. An Air Lift exclusive product! Fits vehicles with in-bed hitches. Tow and haul the heaviest loads with safety and comfort with LoadLifter 5000 ULTIMATE. Works with vehicle's leaf springs to provide up to 5,000 lbs. of rear load leveling capacity and keeps the vehicle riding stable, level and comfortable whether loaded or unloaded. Fully adjustable from 5 to 100 PSI. The closed-cell urethane foam jounce bumper inside the ULTIMATE air springs provide a cushion of air that absorbs shock, eliminates harsh jarring on rough roads and protects vehicles carrying heavy loads. Never bottom out again with the ULTIMATE! LoadLifter 5000 ULTIMATE air springs are maintenance free! Safely run with zero air pressure because of the internal jounce bumper. Replaces factory jounce bumper that is sometimes removed when adding air springs. Requires no drilling into frame! Includes industry-exclusive 60 Day No Questions Money Back Guarantee! Includes the most comprehensive Lifetime Warranty in the industry---covers all kit contents including brackets, fittings and air line. Air springs are built like a tire and are reinforced by durable, 2-ply fabric for maximum strength. Exclusive upper and lower roll plates included. Protect the springs from sharp edges, such as brackets or the frame. The kit includes 2 air springs, brackets, air lines, Schrader valve and all of the hardware needed for installation. Includes fully illustrated instruction manual. Add an Air Lift on-board air compressor system to inflate and deflate air springs with the touch of a button from inside or outside of the vehicle.
Air Lift Company has developed dependable air spring suspension products since our inception in 1949. Our original product, a rubber air spring inserted into a car’s factory coil spring, was created and patented in 1950. We’ve come a long way since 1949 and are proud to be a dedicated suspension specialist company.
Today, Air Lift load support products are sold worldwide and are engineered to fit over 540 vehicles. Our extensive product line offers air helper springs for trucks, RVs, SUVs, CUVs, and vans, as well as the most technologically advanced on-board air compressor systems for on-the-go air spring control.
Air Lift leads the industry in no-drill applications – kits that bolt onto your vehicle’s frame, speeding the installation process. Our teams work constantly to bring innovative products to you and upgrade existing products with the latest technology.
All of our efforts are spent ensuring your safety and comfort by designing, engineering, and manufacturing the highest quality suspension products. We are a family-owned business based in Lansing, Michigan, and make your family and cargo’s safety our top priority.
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The Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88255 (Part #BBCG88255) fits 2011-2026 Ram 4500 models. The 2026 model year is the last year covered by this part number. For newer models, check for an updated version.
The Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88255 (Part #BBCG88255) fits the following vehicles: 2011-2026 Ram 4500; 2011-2026 Ram 5500. Always verify your specific year, make, and model before ordering.
Yes, the Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88255 (Part #BBCG88255) is designed to fit the 2011-2026 Ram 4500.
The Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88255 (Part #BBCG88255) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The LoadLifter 5000 Ultimate is an adjustable air helper spring system that provides up to 5,000 pounds (2,268 kg) of load-leveling support. It uses reinforced, commercial-grade single or double convolute bellows with an internal jounce bumper. The air springs are adjustable from 5–100 PSI (0.34–7 BAR), allowing you to adjust support based on your load.
Kit 88255 includes two air springs, frame upper brackets, air spring upper brackets, left and right lower brackets, clamp bars, roll plates, swivel fittings, carriage bolts, button head screws, flat head screws, frame clamp, e-brake adapter, nylon lock nuts, flat washers, air lines, thermal sleeve, heat shield, zip ties, valve caps, rubber washers, star washers, and hex nuts. See the Hardware List on page 3 for complete part numbers and quantities.
The kit is designed for trucks and cars as specified by Air Lift Company. The manual does not list specific vehicle models or years. Contact Air Lift customer service at (800) 248-0892 or (517) 322-2144 to confirm fitment for your vehicle.
No. The kit includes an e-brake adapter (part J) that attaches to the right-side axle using the stock emergency brake line bracket bolt. The stock e-brake cable bracket is then attached to the adapter using a 5/16" cap screw, two flat washers, and one lock nut. This allows the emergency brake system to function normally.
Required tools include: 9/16" crow's foot adapter, standard open-end combo wrenches, ratchet, 5/16" drill bits (very sharp), metric and standard sockets, heavy-duty drill, torque wrench, #6 metric hex key wrench (socket if available), 7/32" hex key wrench (socket if available), hose cutter/razor blade/sharp knife, hoist or floor jacks, two safety stands, safety glasses, air compressor or compressed air source, and a spray bottle with dish soap/water solution.
Yes. A torque wrench is required because the installation involves multiple fasteners with specific torque values: 30 lb.-ft. for frame upper brackets, 20 lb.-ft. for air spring upper brackets and lower brackets, 16 lb.-ft. for upper mounting hardware, and 10 lb.-ft. for lower mounting hardware.
Yes. The installation requires raising the vehicle and supporting the frame with safety stands, then dropping the axle to make room for the air spring assemblies. A hoist or floor jacks are needed to raise and lower the vehicle and axle during installation.
Yes. You must unbolt and remove the left- and right-hand jounce bumpers (and spacers if equipped) from both frames above the axle. The frame upper brackets are then attached to the frame using the stock jounce bumper holes.
1. Set a roll plate over the top of each air spring with the radiused edge toward the air spring. 2. Install the swivel fitting into the top of the air spring finger-tight plus one-and-a-half turns. 3. Attach the air spring upper bracket to the air spring with two 3/8"-24 button head screws, torqued to no more than 20 lb.-ft. 4. Flip over both assemblies and set a roll plate over both ends. 5. Insert the long 3/8" carriage bolt into the lower bracket using the round hole closest to the edge. 6. Attach the lower brackets with flat head screws to the air spring assembly, torqued to no more than 20 lb.-ft.
The radiused (rounded) edge of each roll plate must face toward the air spring so that the air spring is seated inside both roll plates. This applies to both the top and bottom roll plates.
Install the swivel fitting into the top of the air spring finger-tight plus one-and-a-half turns. Do not over-tighten.
Using the stock jounce bumper holes, attach the frame upper brackets (B1) to the frame using button head screws (M) on both sides. Torque the mounting hardware to 30 lb.-ft. (41 Nm).
1. With the axle suspended, set the left side assembly into position above the axle and insert one long 3/8" carriage bolt into the remaining hole in the lower bracket. Repeat for the right side. 2. Raise the axle back up so the slots in the upper brackets line up. Insert two short 3/8" carriage bolts through the slots in the upper air spring and frame brackets from the top down. 3. Insert the frame clamp onto the emergency brake cable and attach it to the front upper bracket bolt of the driver side only. Cap the carriage bolts with flat washers and nylon lock nuts. 4. Align the air spring so it is perpendicular to the upper and lower brackets. Torque the hardware to 16 lb.-ft. 5. Push the lower bracket against the axle/spring retainer. 6. Insert the lower clamp bar over the carriage bolts under the axle and cap with flat washers and nylon lock nuts. Torque all lower mounting hardware evenly to 10 lb.-ft.
It may be necessary to use a 9/16" crow's foot wrench on the forward carriage bolt because of sway bar interference under the carriage bolt.
You must choose the locations for the Schrader valves and drill a 5/16" (8 mm) hole if necessary. The manual shows three suggested locations: inside the fuel tank filler door, inside rear wheel wells, or the license plate or rear bumper area.
Cut the air line in half using a razor blade or hose cutter, making clean, square cuts. Do not use scissors or wire cutters.
Use zip ties to secure the air line to fixed points along the chassis. Do not pinch or kink the air line. Leave at least 2" (51 mm) of slack in the air line to allow for any movement that might pull on the air line. The minimum bend radius for the air line is 1" (25 mm). Maintain at least 6" (152 mm) of clearance between all air lines and the exhaust system, and avoid sharp bends and edges.
Yes. You must drill a 5/16" (8 mm) hole for the Schrader valve in one of three locations: inside the fuel tank filler door, inside rear wheel wells, or the license plate or rear bumper area.
Frame upper brackets (B1): 30 lb.-ft. (41 Nm). Air spring upper brackets (B2): no more than 20 lb.-ft. (27 Nm). Lower brackets (C1 & C2): no more than 20 lb.-ft. (27 Nm). Upper mounting hardware (carriage bolts L): 16 lb.-ft. (22 Nm). Lower mounting hardware (clamp bar A and carriage bolts N): 10 lb.-ft. (14 Nm) evenly on both sides.
Torque the frame upper brackets (B1) to 30 lb.-ft. (41 Nm).
Torque the air spring upper brackets (B2) to no more than 20 lb.-ft. (27 Nm).
Torque all lower mounting hardware (clamp bar and carriage bolts) evenly to 10 lb.-ft. (14 Nm).
The maximum air pressure is 100 PSI (7 BAR). However, the actual air pressure needed is dependent on load and gross vehicle weight rating. Never inflate beyond 100 PSI.
The minimum recommended pressure is 5 PSI (0.34 BAR).
The LoadLifter 5000 Ultimate provides up to 5,000 pounds (2,268 kg) of load-leveling support.
The manual does not describe any electrical connections or wiring. The system uses air pressure adjustment via Schrader valves, which are mechanical and do not require electrical power.
Do not exceed the maximum gross vehicle weight rating (GVWR) or payload rating as indicated by the vehicle manufacturer. The air springs provide up to 5,000 pounds of support, but you must stay within your vehicle's manufacturer specifications.
Maintain at least 6" (152 mm) of clearance between all air lines and the exhaust system. If a heat shield is included in the kit, install it. Slide the air line thermal sleeve over the air line and place it where the air line is closest to the exhaust.
Maintain at least 1/2" (13 mm) clearance from anything that might rub against each sleeve. Be sure to check the tire, brakes, frame, shock absorbers, and brake cables.
Maintain at least 6" (152 mm) of clearance between all air lines and the exhaust system. Install the heat shield if included, and use the air line thermal sleeve where the air line is closest to the exhaust.
Perform the following checks in order: 1. Clearance test – Inflate to 40–60 PSI and verify at least 1/2" clearance from tires, brakes, frame, shock absorbers, and brake cables. 2. Leak test – Inflate to 40–60 PSI and check all connections for leaks; all leaks must be eliminated before road testing. 3. Heat test – Verify at least 6" clearance from heat sources; install heat shield if included. 4. Fastener test – Recheck all bolts for proper torque. 5. Road test – Drive 10 miles and recheck for clearance, loose fasteners, and air leaks.
Inflate the air springs to 40–60 PSI (2.8–4.1 BAR) and check all connections for leaks using a spray bottle with a dish soap/water solution. All leaks must be eliminated before the vehicle is road tested. If the system develops an air leak during use, use a soapy water solution to check all air line connections and the inflation valve core before deflating and removing the air spring.
Inflate the air springs to 40–60 PSI (2.8–4.1 BAR) for both the clearance test and leak test.
Drive the vehicle 10 miles (16 km) and recheck for clearance, loose fasteners, and air leaks.
Check air pressure weekly.
Check air pressure weekly. Always maintain normal ride height. Never inflate beyond 100 PSI (7 BAR). If the system develops an air leak, use a soapy water solution to check all air line connections and the inflation valve core before deflating and removing the air spring.
Yes. Recheck all bolts for proper torque after the initial installation and after the 10-mile road test.
Use a spray bottle with a soapy water solution to check all air line connections and the inflation valve core. Leaks will appear as bubbles in the soapy water. All leaks must be eliminated before the vehicle is road tested. If you cannot locate or fix the leak, contact Air Lift customer service at (800) 248-0892.
The air spring sleeves must maintain at least 1/2" (13 mm) clearance from tires, brakes, frame, shock absorbers, and brake cables. If rubbing occurs, the air springs may not be properly aligned or positioned. Verify that the air springs are perpendicular to the upper and lower brackets and that the lower bracket is pushed against the axle/spring retainer. If clearance cannot be achieved, contact Air Lift customer service at (800) 248-0892.
Air lines must maintain at least 6" (152 mm) of clearance from the exhaust system. If the air line is too close to the exhaust, reroute it using zip ties to secure it to fixed points along the chassis. Slide the air line thermal sleeve over the air line and place it where the air line is closest to the exhaust. If a heat shield is included in the kit, install it. If clearance cannot be achieved, contact Air Lift customer service at (800) 248-0892.
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