SuperSprings SSF-180-40-1 SumoSprings Maxim Front Airless Airbag Kit Designed to enhance load carrying ability, stabilize sway and improve overall driver control and comfort Provides progressive load control and compresses up to 80% of original height with full memory rebound "Airless airbag" design means no air leaks, air line or compressors Proprietary material provides softer engagement for enhanced comfort Built tough in the USA