Skunk2 Racing Lost Motion Assembly Spring Set (312-05-0200) 3515 The AEM 21-788C Performance Cold

The AEM 21-788C Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicles restrictive factory air filter and air intake housing

The housing seals to the front duct which has been maximised in volume to reduce any potential restrictions in flow

Seibon MB-style carbon fiber side skirts for the 2015-2018 Subaru WRX/STi combine advanced construction techniques with durable

Without Muffler

Skunk2 Racing Lost Motion Assembly Spring Set (312-05-0200) 3515 The AEM 21-788C Performance ColdRequired for Camshaft Lift Above . 490in. 3% Stiffer Than OEM Type R LMA Springs Use w Pro 3 or Tuner 3 Cams. Skunk2 is proud to introduce its Lost Motion Assembly Kits for Honda's B series VTEC engines. Skunk2 Lost Motion Assemblies will fit any B Series DOHC VTEC engine (Type R GSR B16A, B17A, B18C). The Skunk2 Lost Motion Assembly is an advance spring device that is designed to put pre load on the center portion of the VTEC rocker when it is in the