Hi guys,

Would a focus ST rear bumper fit the mk2.5 non st focus? How easy would it be to install it also?

Or a ST/RS diffuser is ideally what I need but seems impossible for a reasonable price.

Fully interchangeable however you will have a gap where the second exhaust pipe would be.

It is easy to swap over, unscrew the rear of the wheel arch liners (as they attach to the bumper brackets) then remove the 2 big nuts (one each side) but be careful as the bolts they go to are only moulded into the plastic of the brackets.

Open the boot and undo the 2 bolts there.

Get under the bumper and remove the screws holding the bottom bumper tabs to the car.

Remove bulb holders from fog/reverse lights and then pull bottom of bumper towards you and lift up to unhook it from the boot trim.

Fully interchangeable however you will have a gap where the second exhaust pipe would be.

It is easy to swap over, unscrew the rear of the wheel arch liners (as they attach to the bumper brackets) then remove the 2 big nuts (one each side) but be careful as the bolts they go to are only moulded into the plastic of the brackets.

Open the boot and undo the 2 bolts there.

Get under the bumper and remove the screws holding the bottom bumper tabs to the car.

Remove bulb holders from fog/reverse lights and then pull bottom of bumper towards you and lift up to unhook it from the boot trim.

Cheers. Any idea of a price I should be looking at? Ideally I only want the st/rs diffuser but seems impossible to find at a reasonable price! Any idea where to source a bumper or a diffuser? I want to fit a duplex exhaust anyway but would rather do this so it goes together better

The ST bumper/diffuser set-up is different to the ZS type.

The ZS diffuser attaches over the existing bumper and the ST/RS ones are actual panels that attach into a space on the ST/RS bumpers-

ZS type-

ZS fit method-

ST/RS type-

ST/RS fit method-

Close up of the wheel arch bolt/bracket for removal reference-