Focus ST225/RSMK2 Performance Build

£6245 (£5,204.17 ex vat) IN STOCK Finance Options Available
DReamscience deck performance. DReamscience deck performance.Dreamsciene Performance engine deck
DReamscience deck performance.
DReamscience deck performance.
Dreamsciene Performance engine deck

Focus ST225/RSMK2 Performance Build

£6245 (£5,204.17 ex vat) IN STOCK Finance Options Available

Full Cylinder Head Rebuild *

See full spec list in product description

Add Big Valve Head. (includes head rebuild)

For builds over 550bhp and large Turbos.

Include ARP Head bolts.

The ultimate head bolt kit.

Include ARP Main Bolt kit.

This is the extended kit with Crank ladder and surrounding bolts.

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Product Description

Focus ST225/RSMK2 Performance Build


*If you wish for this product to be fitted, Please select the fitting drop down option*

Dreamscience Motorsport offer a range of replacement Engines for the Ford Focus ST225 and Ford Focus RS Mk2. These engines offer superior reliability and strength to eradicate the worries of your engine cracking a cylinder liner which, in this day and age seems almost certain.

The development team at Dreamscience Motorsport have teamed up with a Specialist Duratec engineer and race team owner to bring you the most comprehensive and advanced Engine replacement for your performance Ford Focus ST/RS using the latest technology to construct our Engines.  We Prices are competitive and the engine packages are comprehensive. All we require is that you bring your car to us and we do all the work. All you have to do is pick your car up for DS HQ and Enjoy!

During the engine build we go above and beyond all others to make your experience a good one. The job turnaround is 10 days from removal, rebuild, refit and run in. We will also colour code your new Engine block, casings and ancillaries to any colour scheme you may already have for your car.

All the parts used when building your engine are Ford Genuine parts, the engine run-in oil and regular engine oil are all of the highest quality so is the coolant. Our Technicians use engine assembly gel and anti-friction spray when assembling the engines to ensure 0% bearing wear upon initial start-up.

– Performance Rebuild. Strong enough to remain reliable above 750BHP. 

  • Remove and Strip Customer Engine.
  • Deep clean and prep.
  • Liner Replacement. All 5 using 4D CNC Machine.
  • Line honed Main Bearing Housings.
  • Reface the Cylinder block after liner replacement.
  • Finish Honed to suit Pistons.
  • Gap Piston Rings.
  • Check, Polish and recondition Crankshaft.
  • Supply and fitment of new Forged Pistons.
  • Supply and fitment of Forged Rods.
  • Supply and fitment of ARP Big End Rod Bolts.
  • Supply and fitment of DS Liner to Block Wall Pins.
  • Cylinder head, check, pressure test, skim and refit.
  • Long block and motor rebuild.
  • Block, sump and all ancillaries are coloured in Silver to make engine look brand new.
  •  Deep clean of Engine Bay.

Optional Upgrades:

  • Full Cylinder head rebuild
  • Includes 20 x valve guides.
  • 20 x Valve stem seals.
  • Surface check and skim, Deep clean, Pressure test.
  • Re shim all 20 cam Buckets.
  • Labour.
  • Available in the drop down.


  •  Big Valve Head.
  • Includes 20 x larger Valves.
  • Double Titanium Valve Springs
  • Ported and polishes valve ports.
  • Skimmed.
  • Pressure tested and refinished.


All genuine parts used.

Scrub in service. This is highly recommended. We start and scrub your new Engine in for its first 250 miles, a period in which we run your Engine to ensure that the best possible scrub/run in is carried out. Once the 250 mile distance has been covered, we will change your Oil and Oil Filter again and replace the Oil with Castrol Edge 0w40.


PLEASE NOTE. We do not accept PayPal or Chip and Pin card payments for this product as it is over £2500.00. This is a strict company policy and cannot be changed under any circumstances. We do accept card payments on our website, over the phone, our payment terminal at DS HQ and also Bank Transfer. 

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Focus ST225 Performance Build

New OEM Main Journal Bearings.

New OEM Big end Bearings.

New Piston Rings. Gapped and set up.

Dreamscience Ductil Steel Liners. x 5

Dreamscience Spec Liner to Block Wall Pins.

Wiseco 83mm 8:5:1 Forge Pistons.

K1 Forged 143mm H beam Rods.

New OEM RS Spark Plugs

OEM Water Pump

OEM Oil Pump.


OEM Spark Plug seals

OEM Cam plugs.

OEM Cam Seals

New head bolts x 12

Athena Head Gasket

Oil cooler seals.

Sump seals.

Gater Racing Kevlar Cam Belt with tensioners.

OEM Auxiliary belts.

OEM Turbo Coolant Feed Seals.

OEM Turbo Oil Feed Seals.

OEM Turbo return Seals.

OEM Sump Bung Washer.

OEM Oil Filter.

OEM Gearbox Oil.

OEM Super+ Coolant used.

OEM Exhaust and Inlet Gasket.

OEM Front and Rear Crankshaft seals