Cat Back Exhaust [Mk7 Fiesta ST] Pistons Machined from T-6061 billet aluminium

Machined from T-6061 billet aluminium

• Crank sprocket machining for keyway

which the Stage 1 calibration has been fully optimised for

Lighter than OE system

Cat Back Exhaust [Mk7 Fiesta ST] Pistons Machined from T-6061 billet aluminiumThe mountune Cat Back Exhaust for mk7 Fiesta ST reduces back pressure and improves performance, whilst keeping cabin intrusion boom to a minimum. Designed and developed in the UK, mountune's cat back exhaust utilises a Helmholtz chamber design in the rear silencer. This helps cancel out unwanted frequencies due to the way in which the exhaust gas waves are reflected. Despite being more complicated and therefore expensive to manufacture, this design