Forge Piston Ram Dump Valve for Evo 4-X (FMDVEVO14) Innovate Motorsports PERRIN foam filters are made

PERRIN foam filters are made of reticulated polyurethane foam which offers a minimal amount of air

Requires only a T5 hex allen key to install and it's completely reversible if you no longer need it

Porsche style 108mm CV's on both ends

52mm gauge diameter and slim 0

These give you improved traction and reduced wheel hop without too much vibration

Forge Piston Ram Dump Valve for Evo 4-X (FMDVEVO14) Innovate Motorsports PERRIN foam filters are madeMade from billet aluminum, this atmospheric diverter valve dumps the charge air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. Vehicle Fitment: 2008 2015 Evo X (GSR, MR and Final Edition models) 2001 2006 CT9A Evo 7 8 9 (GSR, RS, SE and MR models) 1996 2001 JDM Mitsubishi Lancer Evolution 4 5 6 models