mountune MRX Cylinder Head - 1.6L EcoBoost

Fiesta ST 2013-2019

The mountune MRX Cylinder head upgrade for the 1.6L EcoBoost (Fiesta ST) features dyno and flow bench tested improvements that produce maximum reliable power across a wide RPM range. Each cylinder head is based on a new genuine Ford ST casting that is inspected before receiving a precision NEWEN valve seat profile. The throat of each port is opened up to remove obstructions and then blended into the valve seat to improve flow.

Each head is then ultrasonically cleaned before assembly by one of our motorsport professionals using Supertech High Performance Valves along with upgraded valves springs matched to our V2 camshafts. This head is ideal for those running a larger than stock turbocharger.

The head ships completely assembled with valve lash set using all new cam followers and ready to install on you engine.

Intake airflow is improved by 51% and exhaust air flow is improved by 24% compared to an otherwise stock 1.6L EcoBoost Cylinder head.

Intake valve seats feature multi angle profile, Exhaust valve seats feature radiused profile.

• Power Band 2000-7000 rpm
• Intake Duration 260° (OE Duration 228°)
• Exhaust Duration 244° (OE Duration 212°)
• Intake Valve Lift 8.64mm (OE 7.59mm)
• Exhaust Valve Lift 7.32mm (OE 6.19mm)

V3 Camshaft Specification Option:

• Power Band 2500-7500 rpm
• Intake Duration 272° (OE Duration 228°)
• Exhaust Duration 254° (OE Duration 212°)
• Intake Valve Lift 9.55mm (OE 7.59mm)
• Exhaust Valve Lift 8.41mm (OE 6.19mm)