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Forged Engine Rebuild [Mk8 Fiesta ST] - Fully Fitted

The mountune Forged Engine Rebuild for the 1.5-litre Dragon engine native to the Mk8 Fiesta ST and Puma ST, includes mountune specification forged pistonsand steel connecting rods for support of substantially increased power, torque and cylinder pressures, with assembly performed by one of our highly-skilled racing division engine builders.

In addition to the uprated rods and pistons, this upgrade replaces or upgrades a number of other key engine components to maximise reliability, including:

  • Cylinder head gasket 
  • Big end bearing shells 
  • Head bolts
  • Crank seals
  • Timing chain, gear and guide
  • Crank, ladder and flywheel bolts
  • Water pump
  • All other required gaskets / seals
  • Engine oil and filter (Liquimoly)
  • Coolant change
  • Engine plaque
  • mountune steel conrods
  • ARP rod bolts
  • mountune forged pistons
  • mountune build plaque

Your engine will be removed from your vehicle, before being stripped and inspected within our racing division. Components being reused, including the block, will be multi-stage cleaned, before being rebuilt with the components and forged internals mentioned above. Once rebuilt, it will be reinstalled into your vehicle with all necessary fluids replaced accordingly. A 500 mile post run-in period engine diagnostic check is also included.

This product includes a fixed labour charge for installation at mountune HQ in Hutton, Essex. This is a comprehensive drive in, drive out service, where you can make use of our comfortable and spacious customer waiting area while the work is being carried out.

We will typically need your car for approx. 5 working days.

Please note: the price shown for this product includes installation at mountune HQ only, and is not transferrable to any other dealer or installer.

Please specify your preferred installation date in the 'notes' section when checking-out; our workshop team will then contact you to confirm this date. If we can't accommodate your preferred choice, the team will discuss other available dates.

PLEASE NOTE: Your engine will be subject to a visual inspection after removal from the vehicle. There will be a secondary inspection after tear down. Any additional required work will be advised and quoted before proceeding.


Yes, our 'hub' boasts a comfortable waiting area with ample seating and workspace, free Wi-Fi, complimentary coffee and snacks, plus it features a large selection of our products and engines on display, too.

With over 40-years of designing, producing and fitting ECU/TCU software, components and engines, there is no better choice than mountune to have your performance parts fitted. Just like you, we're all petrolheads and treat your pride and joy with the care and attention that it deserves (as if it were our own car), so you can have complete peace of mind of not only the highest levels of workmanship, but that the people that designed the hardware or software are also installing it as originally intended.

You'll also be able to collect and spend mountune reward points too, helping you save money.

For all of our garage services our labour rate is currently £90 per hour (£75 +VAT).

Yes, when you choose mountune to install your performance parts and ECU/TCU tuning, not only can you spend any mountune reward points you've collected (in the usual way), you'll also earn mountune rewards too. So you can save more and spend less, regardless of how you shop with us.

Yes, we offer a comprehensive service for your Ford or VAG model using manufacturer approved or supplied parts, in accordance with our extensive schedule. Please see our separate servicing products, which can be added to your basket and booked individually, or together with performance upgrades.

It's also the only place you'll get a 'mountune' stamp in your book!

If you have other hardware you'd like installed together with your mountune upgrades please let one of our workshop team know and we'll do our best to accommodate you.

Our workshop currently operates Monday - Friday, 8.00am - 5.00pm. If you have any special requirements around dropping off or picking up your vehicle, please just let us know and we'll do our best to accommodate you.

Yes, whilst booking an upgrade or service online is the best way to secure products and services in our workshop, you'll normally be able to add additional performance parts on the day as well, should you wish.