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View Full Version : Quiet Riot Baffles for Aftermarket Pipes


ErikB
04-04-2017, 03:24 PM
Just figured I would pay it forward and share my recent experience trying to fit an aftermarket slip-on exhaust to my Vaquero. I bought the Cobra pipes with the billet tips, and they were just too loud for me. There are very few options out there as you guys know, so after about 50 miles I pulled them off and went back to stock. I know the Vance & Hines are no quieter. After 50 more miles I went back to the Cobras, then... back to stock. Still too loud! :lol:

I have Cobra Triovals on my Vic Cross Country, and Bassanis on my Indian, and I generally always run aftermarket exhaust on all my bikes. I've had at least a dozen different pipes on various bikes. The Cobra pipes on this VN1700 however, just weren't acceptable. I want it to sound nice and authoritative, but not overly loud so I can't hear the radio. I am also a long distance guy (3600 mile trip planned this summer), so I can't accept anything that is going to give me a headache after 4 hours, let alone 10 days on the road. I want to hear the bike, but I don't want my ears to bleed.

Exhaustive searches came up with very little, so finally I decided to just try and do an aftermarket baffle on the Cobras. I've done the SmartPartz ones on Cobra pipes in the past, with reasonable results. Upon nearly purchasing a set of $25 generic baffles off ebay, my eye caught these "Quiet Riot" baffles from Rocky Mountain Performance listed there as well. At $169 I had to see how they could possibly think baffles were worth that?!

Turns out they are very well made and contain a spring-activated system that basically opens the baffle up under heavy throttle and leaves it more closed at low throttle. This has the effect of making it loud when you want it to be loud, and quiet when you want it quiet(er) -- such as, when rolling out of the neighborhood at 8am on a Saturday or just leisurely cruising down the road.

They are local guys as well, so I figured what the heck, I was intrigued... I am happy to report, that these things absolutely rock! They made the tone ever so slightly deeper, which is a good thing as the Cobras on these bikes are a little higher pitch and raspy than I think most people want. Sound levels while cruising were brought to a very nice "hum", and the bike still screams fairly well at full throttle. In short, it is loud when I want it loud. I'm 100% impressed with these, and they were well worth the money. They didn't make the pipes "quiet" per se, but I'd guess about a 15% reduction in overall sound, and a better tone. Just enough...

After trying to pull the stock baffles out to install these, with zero luck -- suckers wouldn't budge... I took the easy way out installing them, and bought 1" stainless screws to match the threads, and just drilled a hole right into the side of the Cobra pipes underneath the saddle bag. It took a little finagling to get the hole to line up, but just needed some patience. Each takes only 1 screw. They are mounted about 5.5" inches into the pipes, so you have to get fairly far back from the bike to see them up in there. They look like cylinders on a revolver.

One more side note, I had the unique chance to flip back and forth from stock pipes to the Cobras TWICE on a bike with an Ivanized ECU that is otherwise mechanically stock. The pipes make a surprising performance difference. Much stronger in the mid range especially. The perceived loss of drive-ability and performance with the stock pipes, is what made me not give up and sell the Cobras. With the baffles, the improvement is still there, just less sound, so best of both worlds for me.

Anyway, so there you go... hopefully that helps anyone facing a similar dilemma with the relative lack of aftermarket slip-on options for us. :tup:

randog
04-04-2017, 04:44 PM
Just figured I would pay it forward and share my recent experience trying to fit an aftermarket slip-on exhaust to my Vaquero. I bought the Cobra pipes with the billet tips, and they were just too loud for me. There are very few options out there as you guys know, so after about 50 miles I pulled them off and went back to stock. I know the Vance & Hines are no quieter. After 50 more miles I went back to the Cobras, then... back to stock. Still too loud! :lol:

I have Cobra Triovals on my Vic Cross Country, and Bassanis on my Indian, and I generally always run aftermarket exhaust on all my bikes. I've had at least a dozen different pipes on various bikes. The Cobra pipes on this VN1700 however, just weren't acceptable. I want it to sound nice and authoritative, but not overly loud so I can't hear the radio. I am also a long distance guy (3600 mile trip planned this summer), so I can't accept anything that is going to give me a headache after 4 hours, let alone 10 days on the road. I want to hear the bike, but I don't want my ears to bleed.

Exhaustive searches came up with very little, so finally I decided to just try and do an aftermarket baffle on the Cobras. I've done the SmartPartz ones on Cobra pipes in the past, with reasonable results. Upon nearly purchasing a set of $25 generic baffles off ebay, my eye caught these "Quiet Riot" baffles from Rocky Mountain Performance listed there as well. At $169 I had to see how they could possibly think baffles were worth that?!

Turns out they are very well made and contain a spring-activated system that basically opens the baffle up under heavy throttle and leaves it more closed at low throttle. This has the effect of making it loud when you want it to be loud, and quiet when you want it quiet(er) -- such as, when rolling out of the neighborhood at 8am on a Saturday or just leisurely cruising down the road.

They are local guys as well, so I figured what the heck, I was intrigued... I am happy to report, that these things absolutely rock! They made the tone ever so slightly deeper, which is a good thing as the Cobras on these bikes are a little higher pitch and raspy than I think most people want. Sound levels while cruising were brought to a very nice "hum", and the bike still screams fairly well at full throttle. In short, it is loud when I want it loud. I'm 100% impressed with these, and they were well worth the money. They didn't make the pipes "quiet" per se, but I'd guess about a 15% reduction in overall sound, and a better tone. Just enough...

After trying to pull the stock baffles out to install these, with zero luck -- suckers wouldn't budge... I took the easy way out installing them, and bought 1" stainless screws to match the threads, and just drilled a hole right into the side of the Cobra pipes underneath the saddle bag. It took a little finagling to get the hole to line up, but just needed some patience. Each takes only 1 screw. They are mounted about 5.5" inches into the pipes, so you have to get fairly far back from the bike to see them up in there. They look like cylinders on a revolver.

One more side note, I had the unique chance to flip back and forth from stock pipes to the Cobras TWICE on a bike with an Ivanized ECU that is otherwise mechanically stock. The pipes make a surprising performance difference. Much stronger in the mid range especially. The perceived loss of drive-ability and performance with the stock pipes, is what made me not give up and sell the Cobras. With the baffles, the improvement is still there, just less sound, so best of both worlds for me.

Anyway, so there you go... hopefully that helps anyone facing a similar dilemma with the relative lack of aftermarket slip-on options for us. :tup:
I have the Vance and Hines slip on's on my Vaquero. Will these baffles work on the V&H's?

Sent from my Nexus 6 using Tapatalk

H8BUGZ
04-04-2017, 05:35 PM
I've had Cobra's with billet tips. Exactly how do you put the Quiet Riot baffle inside a pipe 5.5", without removing the stock Cobra baffle?

Top Cat
04-04-2017, 05:51 PM
So they go in with the spring facing the rear of the bike.
I would have thought they went in with the spring facing the front.
Shows you how much I know :D

ErikB
04-04-2017, 06:09 PM
They will work with any pipe, just need to order the right diameter baffle. Take a measuring tape to your pipes at the back, and measure the diameter of the INSIDE of the pipe. For my Cobras, I got the "BAFFLE PAIR FOR 2.50in O.D. (2.375in I.D.) PIPES", and they fit perfectly.

As far as how you put them in, right from the back of the pipe. They go in with the spring facing OUT, so the mounting hole is at 5.5", making the spring more like 3" or so from the end. I just used my fingers to weasel it in there, hanging onto the end of the spring mechanism. Also used a set of needle nose pliers to rotate them in finding the hole in one of the pipes as it fit a tad bit tighter due to a burr from drilling the hole. The other pipe was snug, but I was able to rotate it with my fingers. Used a flashlight on the outside of the muffler to get the hole lined up.

I'll add that the instructions say to remove the stock baffles and install them that way. They come with a little 1/4" length 1/4 x 20 screw. I tried for about an hour to pull the stock baffle out on the right side pipe, it just wouldn't budge. Finally gave up (aka, got real p****d off), and went over to the hardware store and bought 1" long 1/4 x 20 stainless screws and just drilled right through the side of the can. Its hidden anyway, and it just looks like a button head screw in the side of the pipe.