Free shipping is offered on this product for the Continental US only. Please contact us for a shipping quote to other countries/locations.
By customer demand, our team at HHR is excited to announce our new SR2 dual-muffler Rear Exhaust for the 958 (2011-current) Cayenne S, GTS, Turbo and Turbo S. Our all-new SR2 exhaust replaces the stock Cayenne rear muffler with two oval, straight-through mufflers for an increase in flow with less sound volume than our SuperSport and SR1 exhausts. Using our X-pipe crossover for a balanced sound, this makes the SR2 our quietest Cayenne exhaust while keeping the same straight-through flowpath as our SuperSport exhaust.
The straight-through flowpath of the dual SR2 mufflers will provide HP/TQ gains with a milder yet deep exhaust note as compared to our SR1.
- Expect your Turbo and Turbo S models to be just a little louder than factory, but with much higher flow.
- Expect your S and GTS non-Turbo models to be louder (without the turbos to quiet the exhaust), with higher flow and an aggressive growl.
- Expect your 2016-up GTS (V6 twin turbo) to be louder, with higher flow and an aggressive growl thanks to the new V6 engine.
We hand manufacture this exhaust system in Denver, Colorado. The tubing, hangers and muffler bodies are made from 304 stainless steel. The low-profile dual oval mufflers tuck nicely under the car without protruding below stock muffler fitment. This exhaust utilizes your stock tips. Since the fitment of the 9578s tips is more complex than that of the 955 and 957, we include 958-specific tip adapters for this generation of Cayenne, hence the additional cost over the cost of the 957 SR2. This exhaust allows fitment of your factory 958 tips, reusing the factory ball clamps. Be sure to let us know what model of 958 you have, since the S and Turbo have different tip designs than the GTS.
We believe this is a DIY project for anyone capable of operating a wrench and a cut-off wheel or reciprocating saw, but fitment and trimming are needed to get your tips to align and stick-out correctly. Plan on approx. 2 hours for installation time.
The SR2 muffler inlets are sized depending on your model (S-V8 or Turbo), so again, please let us know what model you have when ordering. We build each muffler to suit your specific model, so plan on a handling time of 3-5 business days, after your payment clears, before yours is ready to ship.