Products > Ford Focus ST225 (mk2) > Exhausts > dsci ST Full Exhaust (De Cat)

dsci ST Full Exhaust (De Cat)

dsci ST Full Exhaust (De Cat)

£695.00 Inc. VAT

(Now back in stock)dsci Focus ST225 complete 3 inch stainless steel sports exhaust system. Includes turbo down pipe, cat replacement pipe,and a resonated cat back with 5" in line silencers, available with a selection of 4" designed tips.

dsci ST Full Exhaust (De Cat)

Not legal for road use in the UK.

dreamscience have collaborated with one of the UK"s biggest exhaust names to manufacture one of the finest 3" exhausts for the Focus ST on the market.

The exhaust is constructed from 304 grade aircraft spec stainless steel, it is mandrel bent to ensure a smooth and unrestricted exit of gasses from the engine, this is also helped by the de cat and the 3" cat back.

Click play to hear the ST225 exhaust!

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This exhaust does not use the traditional large silencer at the rear of the vehicle as we have chosen to use two inline silencers, not only do they give a sporty sound they have a unique look and save weight.

After customer feedback, we have also taken the 2 rear in line resonators and increased their size from 4” diameter to 5” diameter, the effect of this is a softened and reduced cabin noise, especially in the cruise, while maintaining the aggressive roar and growl at the rear and outside of the car.

We have not used a conventional sports cat, instead we have incorporated a very free flowing de cat which has been thoroughly tested.

With the dreamscience Exhaust system you have the choice between two tip styles, 4" slash cut hard edge and 4" slash cut rolled in.

dsci ST225 Full Exhaust Gallery

Click image to zoom...
dsci ST Full Exhaust     dsci ST225 Turbo Downpipe     dsci ST225 De-Cat

dsci ST225 Cat Back     dsci ST225 De-Cat     dsci ST225 Full Exhaust

dsci ST225 Full Exhaust     dsci ST225 Full Exhaust     dsci ST225 Full Exhaust

dsci ST225 Cat Back     dsci ST225 Full Exhaust     dsci ST225 Full Exhaust

The dsci ST225 Full Exhaust Kit includes:

3 Inch Turbo Downpipe

De Cat

Cat Back

Rolled In or Hard Edge tips
4 inch slash cut tips, available in either rolled in or hard edge



FULL Fitting Kit Optional (clamps and bolts)

You can reuse your existing fittings or purchase a new set using the option below before adding to your basket. The set comprises three replacement genuine ford copper downpipe bolts and a genuine ford downpipe gasket.


Fitting is available at our dreamscience HQ in Hull, UK, priced at £70. Please select this below before adding to cart, and choose "Collection" as your delivery option otherwise you will be charged carriage!













































dsci ST Turbo Downpipe

dsci ST Turbo Downpipe

3 inch stainless steel Turbo Downpipe for Focus ST225

Price if bought individually: £195.00

dsci ST Cat Back

dsci ST Cat Back

(Now back in stock)3 inch stainless steel Cat Back with 4 inch slash cut tips either rolled in or hard edge for Ford Focus ST225

Price if bought individually: £425.00

dsci ST De-Cat

dsci ST De-Cat

3 inch De Cat in stainless steel for Focus ST225 "Picture is for illistration only. the Decat is a straight through pipe"

Price if bought individually: £105.00

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United Kingdom

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3-5 days


Rest of the World

3-7 days


Delivery: Only the highest delivery charge in your basket is charged. If you continue to shop and buy other items with lower delivery costs they are sent in the same package at no additional charge.



£695.00 Inc. VAT

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