im trying to buy a new exhaust or slipons for my nightster, my question is, if get new slip ons that eliminate the oem crossover pipe vs. the ones that still use it will i lose power or tq???

 

If you add slip-ons only, you do keep the stock crossover pipe unless you change the full exhaust. The crossover pipe does reserve some back pressure for low end torque.

 

ok then explain this please, see how these slip ons have the extra round fitting for the cross over pipe
http://cgi.ebay.com/ebaymotors/ws/eB...437&rd=1,1
and then these slip ons do not,
http://cgi.ebay.com/ebaymotors/Slip-...spagenameZWDVW
what the deal with that?

 

What year is your bike? I can tell you why, the first one is for late model 04-07, crossover pipe is on the back joining 2 mufflers. Second one is for early model, the crossover pipe is in the front joining the two header pipes. Please choose the right one for yours.

 

Some slip on mufflers, like the Rineharts, don't use the crossover pipe. Black plastic plugs are supplied with them to plug up the holes to keep water out of the crossover pipe. However, there are some S/O Mufflers that have"ports" built in to them so you can still utilize the crossover. Just depends on the brand, but yes, you may lose some low end torque/power.

 

I got rid of the crossover pipe on my 99 1200 when I put on the V+H straightshots.I think the big crossover pipe onearlier models is ugly.I might of lost a little bottom end,but it looks better now.

 

I ditched the crossover pipe and went with V&H straightshots. I don't think it lost any bottom end. It will loft the front wheel whenyou crack ithard in first gear if it hooks up.

 

The crossover helps with Scavenging ! (improves cylinder filling!)

And usually does improve the low rpm torque....

 

I recently changed the exhaust on my 1996 1200c from the stock pipes with Screaming Eagle slip ons to the HD 2 into 1 exhaust by Vance & Hines. What a difference! The bike pulls much harder and seems to have a broader range. Also have the Screaming Eagle air cleaner , I thought I might need to rejet the carb but the plugs look great and I'm really happy with the performance.