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You are here: Home | Fiesta | Fiesta ST Mk8.5

Fiesta ST Mk8.5

PUMASPEED - The Home of Fiesta ST Tuning

As this new facelifted Mk8.5 car is based on the same platform and engine as the Fiesta ST Mk8 we didn't think it would take much time in transferring all the data from our astonishing Mk8 ST Stage 1R calibration over to the Mk8.5's slightly updated ECU. After a long dyno and test session to perfect the remap MAXD placed the torque at a safe level of just under 380nm and the power for stage 1R at a repeatable 245-255bhp, remember these figures are from a completely stock car!

The initial impressions of the car on the road are quite astonishing, the mid range pull will blow your socks off and the driveabilty is far better than the original calibration. 

Since the release of the 1.5 Dragon engine platform release in 2018 we have already owned multiple ST Mk8s and each one has been developed and developed again. We've had stage 1, stage 2, stage 3 with hybrid turbos that have produced upto an incredible 315bhp. In 2022 we are proud to be the only company in the world currently offering all 3 stages of mapping, plus all the proven supporting hardware.

Pumaspeed truly is the home of Ford tuning, starting with the Pumas in 1999 and now in the last 2 years buying a Mk4 Focus ST, the new Puma ST, Mk8 Fiesta ST and branching out into the BMW, Toyota and Hybrid markets. Our MAXD Out remapping software is unrivalled and the R-Sport hardware we stock is second to none. So whether you have just picked up your Mk8.5 ST and you're looking to pack a little more punch from your turbo with our Stage 1R package, or you're looking for a fully built forged engine with X47 turbo with big brake kit, coilover kit and full exhaust, Pumaspeed is the home of the Fiesta Mk8.5 ST. 

See below the Performance Tuning Packages suitable for your Mk8.5 Fiesta ST


Stage 1R | Up to 255bhp | From £549

Remap & Intake

The Stage 1R package takes your Fiesta ST to where the car should have left the factory with up to 255bhp. The MAXD Out software perfectly paired with your choice of induction system that flows more air to the turbo and creates great induction noise, this is a necessary first mod for every Fiesta ST owner which can be left perfect or added to for stage 2 or stage 3. 


Stage 2R | Up to 275bhp | From £2279

Remap, Intake, Intercooler & Exhaust System

The most fun out of your stock turbocharger. Combining simple methods of more air in and more air out with the R-Sport Intercooler and full turbo back exhaust, this package maximises the standard turbocharger on the Fiesta ST with the MAXD Out remapping software making up to 275bhp on 99 RON pump fuel. 

Stage 3R | Up to 315bhp | From £3249

X47 Hybrid Turbo, Remap, Intake, Intercooler & Exhaust System

The infamous X-Series hybrid turbo, need we say anymore. Tried, tested and perfected. With upto 315bhp on tap, you can fully exploit the incredible Fiesta ST chassis. This package is built with the knowledge we have learnt about what hardware pairs best with this turbo and the MAXD Out software. You simply can't get better. 


Sort Order:
Pumaspeed Power Packages
MAXD Workshop Fitted Remaps
MAXD Flash Programmers
Turbocharger Accessories
Body Kits Styling - Exterior
Bushes - Suspension
Clutches - Uprated
Cooling - Air
Diagnostic Tools
Forscan Diagnostic ELM327 CableAdd to basket.

£19.90 (inc. VAT)

Forscan Diagnostic ELM327 Cable

Battery Isolator Switch 12vAdd to basket.

£10.00 (inc. VAT)

Battery Isolator Switch 12v

Exhausts - Pumaspeed Exclusive
Exhausts - Milltek
Filters - Induction Kits
Service - Mail Order
Silicone Hoses
Styling - Interior
Suspension - Coilovers
Suspension - Lowering Springs
Suspension - Wheel Spacers
MAXD Domed BadgeAdd to basket.

£2.90 (inc. VAT)

MAXD Domed Badge

Pumaspeed Domed BadgeAdd to basket.

£2.90 (inc. VAT)

Pumaspeed Domed Badge

Pumaspeed Large Sticker (55cm)Add to basket.

£9.90 (inc. VAT)

Pumaspeed Large Sticker (55cm)

Pumaspeed SunstripAdd to basket.

£29.90 (inc. VAT)

Pumaspeed Sunstrip

NANKANG AR-1 - 225/45ZR15 Add to basket.

£148.44 (inc. VAT)

NANKANG AR-1 - 225/45ZR15

NANKANG AR-1 - 235/40x18Add to basket.

£209.99 (inc. VAT)

NANKANG AR-1 - 235/40x18

NANKANG AR-1 - 255/35x18 Add to basket.

£239.99 (inc. VAT)

NANKANG AR-1 - 255/35x18

NANKANG AR-1 - 265/35ZR18Add to basket.

£245.99 (inc. VAT)

NANKANG AR-1 - 265/35ZR18

NANKANG AR-1 - 295/30x18  Add to basket.

£289.99 (inc. VAT)

NANKANG AR-1 - 295/30x18