Suits all 1500, 2500, 3500 standard height

Suits all 1500, 2500, 3500 standard height

Polyair Bellows

Polyair Bellows load assist kits are designed for leaf-sprung vehicles, providing adjustable air support to prevent rear-end sagging when loaded or towing. They suit anyone who tows or carries heavy loads and wants a smooth ride when unloaded, with easy adjustment for varying weights. The kits are available for both standard and raised applications.

• Air adjustable from 5 to 100psi
• Smooth ride unloaded, better handling under load
• Superior 2-ply fabric reinforced rubber construction
• Corrosion-proof Zytel Nylon end caps
• Easy to install with illustrated instructions
• Most applications require no chassis drilling

Optional Polyair Cradle Kits let the bellow detach at one end, allowing full suspension extension for greater articulation and grip off-road. Wireless compressor kits are also available, offering on-the-go inflation and deflation via handheld controller or mobile app. Single-path systems suit evenly distributed loads, while dual-path systems allow independent air spring control for uneven loads.

Specifications:

• Part Number: 85305
• Height: STANDARD HEIGHT
• Kit Type: BELLOWS
• Makes: GMC
• Models: C/K Series
• Variants: 1500-2500-3500
• Years: 1988 – 2000
• Cradle required: ABCUSA

Compatible Vehicles:

• GMC C/K Series 1500-2500-3500 (1988-2000)