I'm thinking about putting True Duals Fishtail pipes on my bike (1999 FLSTC).

I have a concern with the back cylinder "wrap around" pipe. Will that make the rear cylinder run hotter than it already does. If so, hotter than it should?

Is this a concern I should have?

I like style, but not at the cost of performance (usually).

Comments? Suggestions?

Thanks,
Rob

 

It will not cause the rear cylinder to run any hotter, providing you're jetted properly.

 

You've got an Evo, so it shouldn't be running hot in any case. Might run a little hotter than the front, but not noticeable to the rider.
Keep in mind that true duals should have equal length pipes, for the engine to run right.

 

The performance loss will be so small you won't even notice it. There's way too much hype about major losses down low with true duals. Usually you hear it from the folks that make decisions based on high rpm dyno numbers. Like someone else said, if it's tuned right the rear cylinder won't run any hotter. But, your right thigh may run cooler.....

 

I think performance loss depends on whether or not you have baffles in the pipes. No baffles will equal noticeable performance loss. The heat is not an issue, or never was on my ride with true duals.

Drew

 

I have true duals on my 1990 bike, although I have an S&S 107 in it. I checked with S&S that they are OK with that set-up. Pipes are Samson, with S&S oval mufflers. I don't notice any difference in heat and on the dyno my motor is giving slightly better numbers than S&S say it will give, so no loss in performance either!

 

Thank you all for the replies.

I went with the Samson's. I'm not thinking there will be any perfromance loss as the bike currently has Python3's on it.