Super 45 4cly B46C/B48C

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Product Overview

Super 45 4cly B48C

The JMTCs S45 F56 turbocharger was designed with the street and track enthusiast in mind.  We started with our huge 50mm compressor and upgraded 9 blade lightened high flow turbine to give you full boost quick and a huge amount of power at the top end.  We also designed it to maintain the quick response of the original turbo but deliver much more torque and power.

This turbocharger not only delivers high torque in the low to mid-range but you will also see a power increase at higher RPM.  No torque or power loss like you see with the original small 43mm turbo. If you are looking for a great street, track, or strip upgrade that delivers full race performance this is the turbo for you. Don’t be left at the starting line by any other car and get one our S45 turbos today.


S44 Specs

  • Flat top Billet High flow flat top compressor
  • High Flow 10 blade exhaust lightened turbine
  • Large Frame turbo cartridge with High strength internals
  • 360deg bearing
  • Designed for higher pressure
  • High temperature alloy turbine housing
  • Water cooled bearing housing
  • Quick spooling dual scrolling housing
  • New electronic wastegate actuator (new turbo only)


  • 3" full exhaust
  • ECU tuning (to remove ecu preset power limits)
  • One step colder spark plugs
  • New oil supply line


  • MINI Clubman F54 LCI   (05/2018 — 12/2019)
  • MINI Countryman F60   (05/2018 — 12/2019)
  • MINI F56 F55   (11/2016 — 12/2019)
  • MINI Cabrio F57   (03/2017 — 12/2019)



  • F46N    220i Gran Tourer (2017 — 2019)
  • F45N    220i 225i Active Tourer (2017 — 2019)
  • F48N    X1 20i  20i 20iX (2017 — 2019)
  • F48      X1 20i 20iX (2018 — 2019)
  • F39      X2 20i 20iX 25i 25ix-china only (2016— 2019)



For engine and turbocharger reliability reasons JMTC requires a 3" or larger exhaust (from turbo to exhaust tip, no exceptions).  As well as installing a new oil line and one step colder spark plugs.  Tuning is not required but will be will help the turbo and engine reach their full potential.  Price Includes the core charge of $250 that will be refunded when a rebuttable core is returned to JMTC.  Refurbished turbos do not come with a wastegate actuator or one that has not been tested.


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