Effective shock absorbers include the Monroe 58640 Sensa Trac Adjusting Absorber and Bilstein 5100 Series Rear Shock Absorber, with average user ratings of five out of five stars on Amazon.com, as of 2015. The Monroe Sensa Trac is nitrogen gas-charged, featuring a fluon banded piston and tapered grooves.
The Monroe Sensa Trac also features all-weather fluid to reduce friction and valves that automatically adjust to road conditions. Multiple reviews mention using the shock absorbers on trucks with great results.
Reviewers of the Bilstein 5100 Series mention excellent riding comfort and handling compared to standard shocks. Multiple customers also mentioned the shocks are easy to install.