Boomba Racing Focus ST250 Sound Symposer Delete Kit Color:Red Valve springs are made with

Valve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance & durability at high rpms and better memory

Please note 3mm mudflaps are now only available in grey or yellow

compared to the stock core

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

tempered and shot-peened for years of precision performance

Boomba Racing Focus ST250 Sound Symposer Delete Kit Color:Red Valve springs are made withThis direct bolt on kit deletes and blocks the sound symposer from your 13+ Focus ST, cutting off the artificial drone noises being directed into the cars cabin, instead allowing you to hear your engine and exhaust tones as they should be. Included is this kit are an aluminum block off plate and a delrin hose plug, both of which are precision CNC machined from high quality material with laser engraved Boomba logos. The block off plate features an o