Bilstein B8 5100 (Steering Damper) is designed as an upgrade to factory steering dampers on trucks and SUVs. Utilizing our proven design, these steering dampers are able to dampen minute movements in the steering and reduce steering vibrations that naturally occur, especially in older vehicles. These steering dampers are zinc coated for resistance to harsh elements and match to all B8 5100 series products. B8 5100 (Steering Damper) will offer a significant improvement in steering, handling and comfort. Details: Series: B8 5100 (Steering Damper) Internal Design: Monotube Lower Mount Type: Eye 12.7mm Upper Mount Type: Eye 12.7mm Body Design: Smooth Body (Non-Coilover) Position: Front Boot Included: No Collapsed Length Inch: 13.19 Extended Length Inch: 20.01 Finish: Zinc Plated Piston Diameter: 36mm Reservoir: No Shaft Diameter: 11mm Stroke Travel Length Inch: 6.82 Stroke Travel Length mm: 173.2 Applications: Jeep Wrangler 2007-2017, Wrangler JK 2018 Warranty: Limited Lifetime Warranty