Patriot Defender Exhaust InstallAre the cops in your hometown cracking down on loud pipes? Do you leave your warm and cozy house at the break of dawn and worry about waking up your light-sleeping wife? Well those days are over friends, because with the Defender exhaust from Patriot you can ride around under the radar until you are ready to rumble with on-the-fly volume changes. To make this a possibility, the Defender exhaust features Sound Flow Inversion (SFI) technology. SFI is an innovative exhaust baffle design that allows the rider to redirect the flow of the exhaust to instantly change the volume. This is achieved by a cable-activated baffling system which can take the engine sound from stock-like quietness to a deep throaty groan close to any of the other loud pipes on the market. The pipes are constructed from corrosion-proof 304 stainless steel with full-coverage heat shields and feature a rolled tip. Internally, the Defender pipes's feature a step-pipe design that promotes exhaust velocity coupled with a state-of-the-art perforated muffler core that sustains the added horsepower and torque no matter what the pipe's SFI setting is at. We installed a set of all-black Defender pipes on an `08 Road Glide and found them to be everything Patriot said they were in the performance department. More so, we liked the look and loved the cable-activated sound adjustment! DECIBEL TESTING ON PATRIOT DEFENDERS TESTING WAS DONE 3 METERS FROM THE TAILPIPE OUR MOTORCYCLE IDLE 4,500RPM STOCK 79DB 98DB CLOSED POSITION 80DB 100DB OPEN POSITION 85DB 110DB (1.)With the OE pipes off of the bike, we swapped the O2 sensors into the Defender pipes. (2.)We also swapped the OE exhaust flanges with new gaskets and retaining rings. (3.)We had to drop the rear floorboard mount to allow room to properly install the new pipes.(3.)We had to drop the rear floorboard mount to allow room to properly install the new pip (4.)Patriot's main man, Don installed the Defender exhaust by sliding it into the engine jugs, then attaching it to the rear saddlebag support.(4.)Patriot's main man, Don installed the Defender exhaust by sliding it into the engine j (5.)This is the cable that activates the SFI system, which allows for volume adjustments on the fly.(5.)This is the cable that activates the SFI system, which allows for volume adjustments o (6.)Don hooked up the activation cable to the rear of the exhaust where the SFI system resides.(6.)Don hooked up the activation cable to the rear of the exhaust where the SFI system res (7.)We hooked up the cable to the OE exhaust bracket located on the starter. This is where the push-pull knob is positioned.(7.)We hooked up the cable to the OE exhaust bracket located on the starter. This is where (8.)With the cable installed, we checked it to ensure full articulation could be achieved. (9.)Here's a shot of the SFI system in quiet mode. With the flap closed, the exhaust gasses and sound travel through the outer sound absorption material.(9.)Here's a shot of the SFI system in quiet mode. With the flap closed, the exhaust gasse (10.)This a shot of the SFI system in loud mode. The flap is wide open allowing the sound and exhaust gasses to travel straight through.(10.)This a shot of the SFI system in loud mode. The flap is wide open allowing the sound (11.)With the pipes fully installed and looking good, we are free to ride our machines without being hassled by the man!(11.)With the pipes fully installed and looking good, we are free to ride our machines wit SourcesPatriot Exhaust/Pertronix(909) 599-5955http://www.pertronix.comParts:Patriot Defender Exhaust(PN M121312B, $949.95) SOURCES Patriot Exhaust/Pertronix By Jeff G. Holt Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!
