S42 Turbocharger Mini Cooper all R series 2007 to current Peugeot RCZ 200

(6 reviews) Write a Review
Adding to cart… The item has been added

Product Overview

The JMTCs Super 42 upgrade high pressure high-flow dual scrolling turbo uses our big 42mm compressor to give you boost that starts early and last much longer than even the JWC turbo. This turbocharger delivers outstanding response with torque and power gains across the entire power-band and the 42mm design gives you extra boost at the top end when you need it most. If you are looking for an extreme street upgrade that delivers full race performance this is the turbo for you. It will deliver great torque, spool early, and last long. For race applications we recommend one of our aftermarket exhaust systems which will allow this turbo to reach its full potential.


 Product Info 

  • Upgraded 42mm compressor
  • Lightened High Flow Exhaust Turbine
  • High strength K04 internals
  • Upgraded 360deg bearing
  • Designed for higher pressure
  • High temperature alloy turbine housing
  • Dual scrolling turbine housing
  • Water cooled bearing housing


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

Fits all models R series Mini S and JCW from 2007 to 2016 and RCZ 200


Notes; for engine and turbocharger reliability reasons JMTC recommends 2.75"and upgraded catalyst (there are 2 on all MCS and JCW 2013 on) on an engine with minimal upgrades and 3” on an engine with a lot of upgrades.
The price Includes the core charge of $250 that will be refunded when a rebuild able OEM core is returned to JMTC.

Refurbished turbos have the same warranty as the new turbo however they have been previously used so they may have defects. Refurbished turbos may have scratches, dents, and the housings can be cracked we also machine, modify and weld the housings so they may have defects. We guarantee that they will function, perform, and operate normally as well as a new unit or we wouldn't waste our time rebuilding them. Any issue that might cause functional or performance issues have been repaired or replaced. If you are concerned about visual defects please purchase a new unit.




(6 reviews) Write a Review

6 Reviews Hide Reviews Show Reviews

  • 5
    Initial Opinions

    Posted by Joshua Anderson on Sep 24th 2018

    Customer provided this turbo for us to install (Bavarian Motor Cars in Alpharetta, GA). Initial opinions of this turbocharger are fantastic. Great power output (N14 is tuned to 22psi), spool time is amazing and upgraded waste-gate actuator allows for consistent intake pressures. Previous turbo was a FrankenTurbo that was accompanied by a surging issue from day one that was suspected to be a result of the standard size waste-gate actuator. No surging with the S42 turbo-charger. One modification required for installation is moving the coolant supply line's orientation. Do yourself a favor and order a new factory hose as the design has been updated and the new design does not utilize a swivel section with o-ring seal that is prone to leak. New hose uses fixed metal piping with plastic hose clamp that is easily removed allowing the hose to be re-positioned and a new hose clamp installed with no leaking. This turbo along with proper tuning is causing torque-steer at the top end of third gear under full acceleration! We are impressed and the customer is very happy!

  • 5
    best bolt on mod yet

    Posted by Jordan on Jun 25th 2018

    Arric has been absolutely amazing to work with since day one of building my mini. He's always willing to tall to anyone to help with questions. His products are as good if not better than oem for refurbished stock sizes and his performance turbos are stellar. My car turns heads everywhere with the increased intake noises and is very top end happy now with the 42mm turbo. Would highly recommend this turbo and Arric for anyone with a mini.

  • 5
    Customer service and quality product at its best!!

    Posted by R56 Mikey on Mar 5th 2018

    From the first time I called jmtc, he was extremely helpful. Having had a bad situation with a blown turbo, I really didn’t know what I was getting myself into. After some research, I called jmtc and he explained everything to me including why I was having the issues that I was. Not only is the s42 turbo perfect, but I got it within two days of ordering! Will definitely be ordering more in the near future! Thanks JMTC!! Life saver!!!

  • 5
    Torque monster

    Posted by Lance M Isaacs on Feb 19th 2018

    Amazing torque, and super fast spool, pulls really hard, enough to have the traction light come on with an ad mini.

  • 5
    Customer service and products are amazing.

    Posted by Gaige Crabtree on Jan 23rd 2018

    I'm so glad I chose to buy from JMTC! The customer service has been by far the best I've received. Arric has been so helpful by answering the countless questions about products and install that I've asked. He's very knowledgeable about his products. It's not everyday you run into people like him. Thank you for all the help. I will definitely recommend you and your products!

  • 5
    Great Product, Great Price

    Posted by Charles C on Oct 29th 2017

    Thank you Arric for your help before, during and after my purchase. It was a pleasure to do business with you, and the turbo has worked out perfectly.