Progressive 412 Shocks Designed for performance at an affordable price, 412 Series shocks for the Honda Monkey enhance the feeling of nostalgia on an already iconic machine. The double wall body construction with a nitrogen charge uses velocity sensitive valving to give riders a smooth, consistent feel throughout the entire shock stroke. Features: High pressure nitrogen charged damper Progressive rate spring Velocity sensitive damping Improved handling and stability 5-position cam style preload adjuster Spanner wrench included 13 length