Injen Black Water Repellent Pre-Filter Fits X-1070 - 1076BLK Piston Sets - Forged - 4cyl Cobb 13-18 Ford Focus ST

Cobb 13-18 Ford Focus ST / 16-18 Focus RS Stage 1+ Drivetrain Package (White w/Blk Shift Knob)

The Mishimoto Focus ST intake has them all

Track Edition (with mid-pipes) provides a 13 lb weight savings over the stock exhaust

but other benefits include unsprung weight reduction

Injen Black Water Repellent Pre-Filter Fits X-1070 - 1076BLK Piston Sets - Forged - 4cyl Cobb 13-18 Ford Focus STInjen Technology's Hydroshield are designed to enhance the efficiency of any air filter, including Injen's SuperNano Web and our 8 Layer oiled cotton gauze air filters. Injen's Hydroshield is constructed from a proprietary base media and then treated with a hydrophobic water repellent. Our Hydroshield is UV resistant, can stop contaminants down to. 005", is puncture resistant, and has elasticity characteristics which helps the Hydroshield to return to