20mm - service kit - suits Whiteline sway bars only, Designed to fit a Whiteline performance 20mm sway bar. Whiteline's sway bar mount bushings not only boasts the latest in bushing material technology but a high performing PTFE inner lining boasting an extraordinary low coefficient of friction. This inner lining eliminates the need to lubricate the bushing on installation and therefore makes these bushing 'grease free'! Whiteline bushings are made from the latest highest quality synthetic elastomer and designed to synchronize your suspension system for optimal safety, handling, performance, ride quality, longevity and reduced maintenance., Limited Lifetime Warranty