57S-4000 K&N Performance Air Intake System
![57S-4000 K&N Performance Air Intake System](https://res.cloudinary.com/knfilters-com/image/upload/c_lpad,dpr_2.0,f_auto,h_540,q_auto,w_540/v1/media/catalog/product/5/7/57S-4000_2.jpg?_i=AB)
FORD FOCUS II RS
![](https://cdn11.bigcommerce.com/s-g6pubi5/images/stencil/500x659/products/1477/791/E-2993__74033.1491981654.jpg?c=2)
57S-4000 K&N Performance Intake Kit - TPS GARAGE LLC
![](https://i.ytimg.com/vi/ok9LyrdvVfE/maxresdefault.jpg)
Ford Focus RS Sound & Power with K&N Air Filter
Review of my K&N 57S-4000 Performance Intake Kit
![](https://vcmstore.com.au/cdn/shop/products/trackhawk_intake_1_grande.jpg?v=1666236410)
Intake Kits – VCM Store
![](https://cdn.snsimg.carview.co.jp/minkara/note/000/002/403/965/2403965/p2.jpg)
売り切り商品 K&N 57S-4000パフォーマンスインテークキット
![](https://kn-sg.com/wp-content/uploads/2021/11/12342-2_Left_34.jpg)
57-0649 K&N PERFORMANCE AIR INTAKE SYSTEM - K&N Singapore
Gain more torque to fly and more power to climb with the customized K&N FIPK Air Intake Ramp up with up to a 26-horsepower increase thanks to improved
![](https://www.napaonline.com/img/brand/k-n/k-n-fipk-air-intake-01b7L.png)
K&N FIPK Air Intake 57S-4000
K&N's 57S Performance Airbox is a TUV compliant intake system. Supplied as a complete kit with all necessary parts and fittings supplied. The K&N
![](https://i.ebayimg.com/images/g/4LYAAOSwymRlhpQ9/s-l1200.webp)
K&N 57S Performance Air Filter Airbox / Induction Kit - 57S-4000
![](https://res.cloudinary.com/knfilters-com/image/upload/c_lpad,dpr_2.0,f_auto,q_auto/v1/media/catalog/product/5/7/57S-7070.jpg?_i=AB)
K&N 57S-7070 Performance Air Intake System