K&N's 57S Performance Airbox Lid & Performance filter upgrade - 57S-4000 SiCo Developments 52mm) is a complete standalone

52mm) is a complete standalone gauge

but also require an official road approval to use their car every day

Pillowball top mount – some applications come with hardened rubber top mounts as standard to ensure the highest quality ride and keep costs as reasonable as possible for road use but we often offer a pillowball upgrade for these vehicles should you want to remove this flex and make the car a little more hardcore

The Airtec stage 2 had already proved itself in the Focus RS tuning scene as the must have mod for 400+ cars

K&N's 57S Performance Airbox Lid & Performance filter upgrade - 57S-4000 SiCo Developments 52mm) is a complete standaloneK&N filters have just launched their Gen1 Air box lid modification complete with K&N filter element, bolt on power in a matter of minutes. TUV approved for Europe, fits lots of applications Focus Mk2 RS Focus Mk3 ST250, Zetec S 1. 6 & 1. 6 Eco Boost, 1. 1 Eco Boost K&N's 57S Performance Airboxes increase horsepower and acceleration by dramatically reducing air flow restriction caused by the original factory design. They come with K&N's Million Mile