I assume this is what he's talking about:

http://www.motorcycle-superstore.com...=33&zmap=18975

I used em several years ago with a set of samson pipes. I think they were big guns. I couldnt really tell any difference, and I always wondered if the restriction at the head pipe would make it run hotter?

Thanks

I have a set of torque cones for $15 shipped if anyone wants them. If you are running drag pipes you should run them. I took off my drag pipes, so they are just taking up space. Do they work? Well the point of them is to keep hot exhaust gasses from being sucked back into the exhasut port on drag pipes. They do work.

Drew

They are perfect for Drag pipes. I noticed an improvement when I installed a set w/cycle shack drag pipes on my low rider. They mitigate the reversion wave that interferes w/exhaust gases exiting the exhaust port.

I used them on an 87 Softail. It had the stock 80 inch motor with a mild cam, S&S super-e carb. They helped bottom end power but I also think the 2" exhaust was too big for that set-up. That's probably why the torque cones helped.

Oddly, I thought they were required when running straight pipes. We had to use them on the old Triumphs or we lost so much power it was ridiculous.
I can't say for Harley, since I won't run straight pipes any more.

Torque cones help a lot with free flowing exhaust to help increase the velocity in the exhaust pipe. Tests have shown using Samson torque cones which are different than others by use of what has been known as an affect that help squeeze the exhaust flow evenly and expelled evenly will increase your torque by 3-5 foot pounds of torque on any engine. This may not be felt by seat of the pants riding but the numbers sure do show on dyno runs. Please be advised the Torque Cones from Samson are a trademark name referring to our CNC machined 300 series stainless steel Torque Cones. Not just a tube that has been stamped to restrict flow. Ours is the one that actually give the best results.
thank you,
JR

adjustable baffles
 

Do'nt worry about your slip ons with a loud sound. I am actually working on a mechanical system to be fitted inside the open straight tail end of the slip on which can be adjusted before your ride with a hexagon inner key. Changing stepless from the rumble, just loud enough to hear that you ride a Harley till the screaming breast trembling roar of open exhausts. So you can choose for expect less than 480 US per pair. Easily to be mounted by yourself..Testing at this moment, sound level checks in several positions of the mechanism. Soon I will bring these on the market..

I had Sampson Torque cones in my old first gen Big guns.... they did seem to help with backpressure and "smoothing out the torque curve". I didn't notice that mid range drop that I had before installing them. Those old big guns were straight pipes with no baffles - not sure what, if any, benefit they would give if you were running baffles though.