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Thread: Delkevic slip-ons

Created on: 10/02/19 04:56 PM

Replies: 5

kansjfr



Joined: 02/14/19

Posts: 11

Delkevic slip-ons
10/02/19 4:56 PM

I put a set of Delkevic slip-ons in place of the huge factory pipes, and left the baffles in. I read somewhere (can't remember where) that the baffles restricted the horsepower, and that I need to remove the baffles. Anyone know anything about this? All info/comments will be welcome. Thanks, Mike.

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ominousone



Location:

Twin Cites So Burbs, MN

Joined: 07/19/16

Posts: 157

RE: Delkevic slip-ons
10/02/19 5:03 PM

I go the Delkevic Ovals. They were way too quiet with the baffles in and it wouldn't surprise me if they did hurt the HP. They are plenty quiet and sound great with the baffles out.

ominousone

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cruderudy


cruderudy's Gravatar

Location: RPV

Joined: 08/15/12

Posts: 1770

RE: Delkevic slip-ons
10/02/19 6:47 PM

Baffles restrict the flow and probably do cut some power at max rpms, take em out for track days




Perfectly Set up '06 dead and gone
New BBW '14 14R

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Hub


Hub's Gravatar

Joined: 02/05/09

Posts: 12235

RE: Delkevic slip-ons
10/02/19 7:19 PM

Here is how I look at a speed event. Say the speed of sound, or the speed of light is an event. I'd apply that theory as having an arm out of the window of a speeding car. I could see a palm up position is in that pipe and is restricting the speed of flow out of that pipe. By removing the baffle, the speed event made the crank move faster. This will cause the event to cycle the strokes sooner.

The Good the Bad and the Ugly:
1. As mentioned, baffles out is a GOOD way to use this extra HP for top speed closed course kind of riding.
2. The change in pressure hurts low rpm grunt for the street so this is BAD for darting from fenders anshit.
3. Doing yourself a disfavor if street is mostly the riding area and UGLY; for neighbors and fuz will rebel.



Tormenting the motorcycling community one post at a time

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JimGnitecki



Location:

Vancouver Island, Canada

Joined: 01/14/19

Posts: 323

RE: Delkevic slip-ons
10/03/19 3:03 PM

I have had the Delkevic slip-on carbon fiber mufflers, in the longest length they offer them in, on my 2017 ZX-14R for almost 4000 km = 1400 miles. I have run them with and without the baffles. Honestly, I cannot detect any difference in power, but they sound better (to me) at low rpm (3000 rpm) WITH the baffles in.

With or without baffles, there is no way these slip-ons are going to offend anyone. They are pretty quiet either way.

Jim G

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kansjfr



Joined: 02/14/19

Posts: 11

RE: Delkevic slip-ons
10/04/19 3:07 AM

OK, guys, thanks for the input. I'll probably just leave well enough alone and keep the baffles in.

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