the ultimate NC mx-5 supercharger kit

strong, smooth

predictable powerband

with oem driveability

the worlds best supercharger just got even better

Developed by corten miller

enhanced by bbr gti

key

Statistics

Increased Power
Stage 1
60% more BHP
Stage 2
85% more BHP
Increased Torque
Stage 1
65ft-lb (88NM)
Stage 2
80ft-lb (108NM)
Reduced Launch
Stage 1
5.3 seconds
Stage 2
4.8 seconds

01

Launch control

Get the best standing start possible with our special launch control feature. Set your RPM launch point and then let the ECU do the rest to manage traction off the line.

User adjustable launch points only available for models fitted with cruise control, otherwise possible with ECU Connect.

02

flat foot shift

Allowing the driver to keep their foot planted on the accelerator whilst changing gear minimises shift times, keeps maximum engine speed & torque ready for the next gear.

03

switchable maps

Four stage switchable mapping adjustable on the fly, 98+, 95RON (E5/E10) fuel modes, Valet Mode, Race Mode, etc

Stage Switchable Mapping Only Available for Models Fitted with Cruise Control, otherwise possible with ECU Connect.

04

downshift
auto-blip

The Auto Blip feature applies a short burst of throttle when the driver is down-shifting, which is particularly useful under braking. This raises the RPM to help provide a smooth entry into the lower gear by reducing the engine-braking effect.

small

but mighty

Based upon the Rotrex C30-94 Centrifugal design with superior efficiency, silent operation and self contained oiling system, combined with it’s unique patented traction drive technology it offers  the smoothest linear power delivery. The supercharger supplies airflow of up to 0.39kg/s reaching impeller speeds of up to 100,000RPM combining small size with exceptional performance & durability.


If left unrestricted would go onto 430BHP!

smooth

power delivery

Our Supercharger kit's true strength lies in exploiting the exceptional balance and poise the chassis has from the factory. Retaining the car's OEM smooth, linear power delivery characteristics, with no spikes in torque are in keeping with the MX5's character.

FRONT
mounted intercooler

+ cold air intake system

Fitment behind the front bumper, offers protection from the elements & is the perfect location for cooling down the charge air generated by the Rotrex, offering reduced heat soak for a maximum safe power and reliable horse power increase. Using a high quality core, hand fabricated & welded by highly skilled craftsmen, our inter-cooler offers excellent thermal properties, flow characteristics & all with minimal pressure drop. The reusable foam air filter can be cleaned at service to maintain maximum performance & air filtration properties.

industry leading

tuning

Using industry leading ECU tuning allowing a true and clean re-calibration of the standard ECU.
Our MX5 supercharger is calibrated using a powerful tools to add special features such as Launch control and switchable maps.

small

but mighty

Based upon the Rotrex C30-94 Centrifugal design with superior efficiency, silent operation and self contained oiling system, combined with it’s unique patented traction drive technology it offers  the smoothest linear power delivery. The supercharger supplies airflow of up to 0.39kg/s reaching impeller speeds of up to 100,000RPM combining small size with exceptional performance & durability.


If left unrestricted would go onto 430BHP!

smooth

power delivery

Our Supercharger kit's true strength lies in exploiting the exceptional balance and poise the chassis has from the factory. Retaining the car's OEM smooth, linear power delivery characteristics, with no spikes in torque are in keeping with the MX5's character.

FRONT mounted intercooler

+ cold air intake system

Fitment behind the front bumper, offers protection from the elements & is the perfect location for cooling down the charge air generated by the Rotrex, offering reduced heat soak for a maximum safe power and reliable horse power increase. Using a high quality core, hand fabricated & welded by highly skilled craftsmen, our inter-cooler offers excellent thermal properties, flow characteristics & all with minimal pressure drop. The reusable foam air filter can be cleaned at service to maintain maximum performance & air filtration properties.

industry leading

tuning

Using industry leading ECU tuning allowing a true and clean re-calibration of the standard ECU.
Our MX5 supercharger is calibrated using a powerful tools to add special features such as Launch control and switchable maps.

increased performance

Our Stage 2 Supercharger delivers 280/300bhp, 75-85% more than a stock Mazda MX5, whilst our Stage 1 Supercharger develops 230/250 bhp.

That is 50-60% more than stock depending on the type of exhaust manifold (and primary diameter).

0-60 in 4.8 seconds

STAGE 2
4.8 SEC
STAGE 1
5.3 SEC
OEM
7.5 SEC
Replay?

power charts

Stock
BHP
159
FT-LB
147
0-60
7.5s
Highlight on Chart
Stage 1
BHP
248
FT-LB
213
0-60
5.3s
Highlight on Chart
Stage 2
BHP
304
FT-LB
227
0-60
4.8s
Highlight on Chart

4-Way
Map SWITCHING

What's
included

bbr stage 1

  • C30-94 Rotrex Supercharger
  • Rotrex Oil reservoir
  • BBR Oil Cooler
  • BBR High Quality Anodised CNC Rotrex brackets
  • BBR High Quailty Anodised CNC Tensioner brackets
  • Supercharger and revised ancillary belt
  • BBR 250BHP intake restrictor
  • BBR CAIS - Cold Air intake system with serviceable air filter
  • BBR Front mounted intercooler
  • BBR branded Intercooler silicone hoses
  • BBR Mandrel Bent intercooler pipe work
  • BBR Branded Breather hoses
  • Bosch EV14 BBR spec Injectors
  • BBR / Bosch MAP / Temperature sensor
  • BBR Recirculating piston type dump valve in factory black finish
  • BBR Starchip EcuTek calibration software with driver switchable modes (ECU Connect required for models without cruise control)
  • Optional hardware only and BBR Software/EcuTek programming cable choices for DIY clients
  • * An aftermarket sports manifold is required BBR 4-1 manifold advised.

BBR stage 2

  • BBR Fuel Module
  • NGK Iridium Spark Plugs
  • Engine Mounted Fuel Filter
  • 300 BHP Intake Restrictor
  • BBR 300 BHP ECU Calibration
  • *BBR 2.5” Manifold back Exhaust system and Stage One clutch recommended

bbr Fuel Module

Past 250bhp included with stage 2, we address the dead end fuel system with our in-tank module

Housing a 500BHP fuel pump and boost compensated fuel pressure regulator we overcome the fuel pressure drop found on the stock system. This means we can use smaller injectors to maintain OEM idle and drivability characteristics. Finished off with an engine bay mounted fuel filter and billet anodised bracket, this now makes fuel filter changes possible unlike the stock system.

pricing

Stage 1

from £4095

The BBR Stage One supercharged conversion is available now for all 1.8 and 2.0-litre 2005-2015 MX-5 (NC) models at a cost of £4995* on a fully fitted ‘drive-in, drive-out’ basis from BBR. The DIY version, intended for export and competent mechanics, is also available as hardware only £4095, including comprehensive instructions and technical support, or including BBR software with either EcuTek ProEcu or ECU Connect programming cables stating at £4590.

The BBR Stage One supercharged conversion carries a 12 month warranty.

All prices exclude VAT

*Standard vehicles will require an EcuTek tuning licence

Comprehensive Instructions
Technical Support
12 Month Warranty
buy now

Stage 2

from £4795

The BBR Stage Two supercharged conversion is available now for all 1.8 and 2.0-litre 2005-2015 MX-5 (NC) models at a cost of £5995* on a fully fitted ‘drive-in, drive-out’ basis from BBR. The DIY version, intended for export and competent mechanics, is also available as hardware only £4795, including comprehensive instructions and technical support, or including BBR software with either EcuTek ProEcu or ECU Connect programming cables stating at £5290.

The BBR Stage Two supercharged conversion carries a 12 month warranty.

All prices exclude VAT

*Standard vehicles will require an EcuTek tuning licence

Comprehensive Instructions
Technical Support
12 Month Warranty
buy now

faq

It says that the Rotrex c30-94 is capable of 400+ bhp - how do i get this? 

We restrict the Stage 2 kit to 300 BHP to maintain reliability on the stock engine. A forged engine and other supporting hardware is required to maintain 400+ BHP. Please contact us for more information.

do i require any other parts for the supercharger kit?

An uprated exhaust manifold is required for both kits. For Stage 2 we recommend an uprated clutch & full exhaust system.

can i buy the kit and fit it myself?

Yes, for competent enthusiasts the kit is available from our website.

do i have to use high octane fuel? 

With any performance vehicle we always recommend the use of the best fuel available to you. Our preferred choice is Shell V Power (99RON). Lower octane calibrations are available.

do i need to upgrade my brakes?

The MX5 has a very good stock brake setup, if used on the track or driven hard we recommend a disc and pad upgrade. Please contact us for more information

do i need to upgrade my Suspension?

The MX5 is a very nicely balanced and setup from the factory. We recommend a good alignment setup and a set of BBR lower springs with Koni dampers if driving hard or on track, for more track focused coilover options please contact us for more information.

what warranty is avaliable with the kits?

1 year parts on all components

will the kit affect fuel economy?

At cruise conditions the fuel economy should be unaffected.

does the supercharger require maintainance?

The Rotrex oil should be changed every 50,000 miles or two years whichever comes sooner.

does this kit fit other mx-5's?

This kit will only fit the 2005 - 2015 Mazda MX5 NC. While development has been completed on a 2.0 engine this kit will also fit the 1.8. (power fiqures for the 1.8 will differ to the 2.0)

We will be updating the site with NA, NB and ND versions as and when they launch.

I HAVE A 2.5 LITRE ENGINE TRANSPLANT – IS THIS AN OPTION?

A bespoke 2.5 version is in the final stages of testing, this will be available at identical prices approx. March 2022