Flat 6 Motorsports by EVOMS - Performance Diverter Valve Upgrade (718 Cayman/Boxster)


Designed to Fit

  • 2017 - Present Porsche Cayman / S / GTS (2.0 / 2.5L)
  • 2017 - Present Porsche Boxster / S / GTS (2.0 / 2.5L)

Note - Includes 1 diverter valve

Product Details

The Flat 6 Motorsports by EVOMS Performance Diverter Valve Upgrade replaces the cheap OEM plastic diverter valve that is prone to leaking boost with tuned and even stock 718s. Flat 6 Motorsports has partnered with Evolution Motorsports (EVOMS), a renowned Porsche tuning company to offer a high-quality diverter valve solution. We leveraged their expertise in tuning high powered Porsche vehicles for decades. Paired with precision manufacturing, these diverter valves are built to last. 

The performance diverter valves use a 100% 6061-T6 aircraft-grade aluminum housing with an engineered spring rate capable of handling higher boost applications. These performance diverter valves will hold consistent boost pressure, maximizing power delivery along with much quicker recovery, enabling faster acceleration and smoother rapid shifts from the PDK. 

For any 718 2.0L or 2.5L running a tune, these are a must-have!


  • Quicker turbo spool up
  • Faster transition between gears
  • Holds higher boost levels where the factory diverter valves fail
  • 6061-T6 billet aluminum construction
  • Tested on 450HP+ 718 Cayman GTS


The diverter valves are 100% bolt-on and installation can occur in a couple of hours.

Install Guide - Coming Soon