FREE SHIPPING Porsche Cayenne Turbo Secondary Bypass 3" Tube (955 CTT - 04-06) for Sale


When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Price: $595.00

A quick note about tube sizing (2.5" or 3") for our secondary pipes: The factory pipes on the Cayenne Turbo measure approx. 2.56" OD. So, our 2.5" secondary pipes will flow better than the factory cat pipe, will fit better and will connect more easily to your factory midpipe. The 3" version will flow better through the secondary and will provide a more open, "boomy" sound. However, you will maximize the benefits from the 3" version if you upgrade to our full 3" midpipe and rear exhaust. These 3" secondary bypass pipes include adapters to transition from our 3" OD tube down to the factory 2.56" OD midpipe.

Hanksville Hot Rods is pleased to offer our newly redesignedsecondary cat bypass for the 955 (2004-2006) Cayenne Turbo and Turbo S. The stock Porsche Cayenne has 2 sets of (4 total) catalytic converters and this bypass removes the rear set of cats (you will still have one full set remaining on the car) to increase HP/TQ, sound levels by a marginal amount and provide incremental weight savings.

This new design provides much more clearance over the crossmember, and a more exact fit for the hangers. Please note that, due to the inconsistent availability of copper sheet, these may ship with copper or aluminum gaskets.

We hand manufacture our own bypasses in Denver, Colorado. The tubing, flange, and 4 adjustable hangers are made from 304 stainless steel with a matte brushed finish. We utilize a 3" tube which mates up to the factory down pipe, then to the factory exhaust.Our flanges are made from stainless steel, CAD-designed to match the factory flanges, and are precision water jet cut. Our bypass incorporates 4 independently-adjustable stainless hangers to eliminate any fitment issues and to allow consumers to adjust their bypass clearance as the exhaust sags over time. In addition, we have realized how important the role of hangers are in supporting the midsection of the exhaust. While the bypasses are considerably lighter than the factory cats, hangers are mandatory because the factory downpipes are flexible braided stainless steel and are not designed to be weight bearing. Adding bypasses without hangers will eventually damage the factory downpipes.

Bypass pipes will provide a power increase in the low-end and mid-range power band on a CTT and most importantly allow the turbos to spool significantly quicker. This product will provide significant power peak gains after an ECU tune. It is a noticeable difference and you will feel the difference the first time you drive with them installed.

We believe this is a DIY project for anyone capable of operating a wrench. We provide detailed instructions, needed hardware and aluminum gaskets. This project is estimated at 90 to 120 minutes for the first-timers. It’s a 60-minute project once you’re comfortable with the process.

Plan for these pipes to ship within3 business days of cleared payment. Thanks! -Hank










Parts Search:


Follow