Bilstein B4 OE Replacement-Suspension Strut Assembly (22-155344) 17090 The 74mm IPD Plenum is

The 74mm IPD Plenum is the best Boxster/Cayman modification on the market and will further complement other mods such as exhaust

this trunk lid offers high stiffness and strength with up to 50% weight reduction compared to the original panel

Compatible with factory/OEM headers and center muffler

Special attention would be required - as well as the application of AWE's AWE 180 Technology

9 wideband O2 sensors and offer the ability to calibrate the oxygen sensor for maximum accuracy

Bilstein B4 OE Replacement-Suspension Strut Assembly (22-155344) 17090 The 74mm IPD Plenum isBilstein B4 OE Replacement dampers are specifically engineered to be the best choice for maintaining the original ride quality of your vehicle, while meeting or exceeding OE standards. These dampers are the ideal choice for the driver looking to restore the original performance and handling of their vehicle, with the added benefit of world famous Bilstein quality. Notes: It's recommended to replace shock or strut in pairs (passenger and driver side at