CLA45 AMG RENNtech Stage I Turbo Upgrade CLA45 AMG Turbo

  • Sale
  • Regular price £5,980.00
Tax included. Shipping calculated at checkout.


The RENNtech performance turbo upgrade is truly the ultimate upgrade for your 45 AMG - M133 Turbo-Series!

The lightweight forged billet wheel features a dramatically larger than stock impeller (inlet side) and an increase in the turbine trim (exhaust side). This combination of high quality, light weight components coupled with less rolling resistance compensates for turbo lag despite being a functionally larger turbo. Our Turbo Upgrade uses a modified bearing and a stronger shaft, to remedy the factory weaknesses. The end result is nothing short of spectacular with the RENNtech turbo package making up to an incredible 460 HP and 415 TQ at the crank!

More power isn’t the only performance benefit as our turbo spools quicker, offer a more responsive throttle and immediate power delivery thanks to a reduction in exhaust back pressure, rolling resistance, higher RPM's and a lighter rotating mass. In addition, our turbo upgrade kit includes the RENNtech ECU Upgrade and high-performance air filter. The Turbo Upgrade has been developed in partnership with RENNtech GmbH, facility in Germany, and was tested and perfected on the Nürbugring. All parts are tested in-house as well to ensure years of 100% trouble-free and leak proof operation.


Key Features:


  • The RENNtech Stage I Turbo Upgrade comes with an ECU upgrade and performance air filter
  • Entire cartridge is fine balanced as an assembly
  • Lightweight forged billet wheel
  • Modified bearing and strong shaft
  • Less rolling resistance offers quicker spooling
  • Virtually no lag with impressive throttle response
  • Up to 460 HP and 415 TQ @ crank



  • This Turbo Upgrade requires an additional core charge, which will be credited upon return of OEM turbo core to RENNtech
  • We have found the new M133 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz. We typically see slightly higher baseline numbers than claimed by the factory. Numbers will be dependent on conditions and fuel quality.
  • To reach the maximum power level, RENNtech downpipe is required


Performance Numbers Overview 


45 AMG (MY2013+ | M133 | 2.0L Inline-4 Turbo) Stock Performance (at crank):

    • 355 HP @ 6,000rpm; 332 LB-FT @ 2,250-5,000rpm
      • Note: Mercedes M133 engine performance when measured, obtains higher power numbers than rated from factory.



45 AMG (MY2013+ | M133 | 2.0L Inline-4 Turbo) Modified Performance (at crank):

    • Rated by RENNtech:              460 HP @ 6,050rpm; 464 LB-FT @ 4,100rpm
    •                                                     377 whp @ 6,050rpm; 380 wtq @ 4,100rpm
      • Crank Performance Numbers are calculated with a 18% Drivetrain loss on the 4-MATIC vehicles.