Eibach ERS 4.00 in. Length x 3.00 in. ID Coil-Over Spring Air Filters>Air Filters - Drop In a similar material to the

a similar material to the famous ARB TRED PRO Recovery Boards but containing a higher concentration of glass to improve strength

Made with aircraft quality aluminum and specifically engineered to maximize cooling efficiency

This kit is engineered specifically for your 2008+ Subaru WRX or STI and includes everything needed to replace the restrictive factory airbox

A combination of lightweight alloy materials makes transportation and operation truly painless

Eibach ERS 4.00 in. Length x 3.00 in. ID Coil-Over Spring Air Filters>Air Filters - Drop In a similar material to theEibach's ERS line has evolved over the years to be the world's most prominent, comprehensive and superior Race Spring System. Eibach Race Springs are all manufactured in series production, often repeated, with a strong manufacturing experience. Thus, Eibach constantly achieves the most linear spring characteristic (rate) while maintaining the lowest tolerances and the highest quality in the industry.