Supertrapp motorcycle slip on dimensions

[kz550]

[Also see "Fitting SuperTrapp universals How-To thread <HERE> for another method of installation.]

This is my last hope for information. I'm striking out on your Web site and on the Web.

My case: I have a stock 2000 ZX-9r E1 and would like to fit an aluminum (423-25000) or stainless steel slip (425-25160) on to the stock mid-pipe. It appears my mid-pipe is 2.5" in diameter (actual diameter is 2 3/8" OD) and you make several universal slip-ons with 2.5" inlets.

My question: Is the Supertrapp 2.5" inlet a female 2.5" designed to slip over a 2.5" mid-pipe, a 2.5" male inlet designed to slip into the mid-pipe or a 2.5" inlet designed to butt-up to a 2.5" mid-pipe?

Thanking you in advance.

[bschultz]

A 2.5" ID (inlet diameter-muffler) is designed to fit onto (over) a 2.5" OD (outlet diameter-pipe).

[kz550]

That's exactly the type of information I was looking for. Now I can narrow down my options.

I'm looking forward to getting my new exhaust.

Thanks again.

BEFORE

My stock 2000 ZX-9r with scratched up titanium canister muffler

[kz550]

How: I cut the old stock muffler end off using a hacksaw right at the mid-pipe exit weld. There was some additional muffler core in the mid-pipe which then came out.

The universal 2.5" ID was just a little loose sliding over the mid-pipe, so I crimped it down to match and sealed the trapp to the mid-pipe using Permatex 101BR Ultra Copper silcone gasket (local auto parts store). The circular clamp (included) covers all the crimp scratches. For good measure, instead of installing one pin (included), I put on three (at clock points: 10, 12, 4 O'clock), using similar type flat-top screws from a computer hard drive. It's not quite finished until a welder fixes the rear set plates (included) to the muffler.

The Supertrapp came with 12 diffuser discs, but six discs makes for a nice exhaust growl/howl and even power delivery at my 4500 feet elevation. I use eight when hitting the canyons. However, this requires sneaking out of my neighborhood keeping the RPMs below 2,500. Once clear, I let her go!

Pros: Beautiful look & sound. Light weight & fits my bike. Possibly/probably more power throughout powerband. Easy to follow instructions w/diagrams.
Cons: Requires aluminum welds for rear set mount

Specs: Supertrapp 2 1/2 in. Inlet Universal Aluminum External Disc Muffler
Dennis Kirk Part #: 43950
Manufacturer Part #: 422-25000






zx9 zx9r zx-9 zx-9r 2000 00 Ninja Kawasaki zx-900 zx9r slip on exhaust

[kz550]

<Accompanying music audio> -- YouTube video for background audio (opens new browser tab/window)
ZX-9r Supertrapp audio taken running through a couple gears, shifting at 12,000 RPM.

The right look, sound, attention and performance. Pic 1: Oct 2009, 2:May 2009 3: Sep 2008

[bschultz]

Looks great, nice job!
Would you mind if we used one of your pic's along with some of your comments on our Gallery section of the website?

[jojohan]

Thank you!

[darthJ]

Sweet to see these milestones under Supertrapp.

[kz550]

2017 has been a continuation of 2016's superlative riding season. My SuperTrapp is such a great exhaust! It never needs maintenance, other than cleaning and the occasional sanding to restore its beautiful metallic luster. Just get on and ride, the SuperTrapp keeps everything in check so that all you have to do is enjoy the power and crisp throttle response. But that's just the first part of this story. This bike, with its SuperTrapp, is also a lethal long distance scalpel. See the GPS? That's to pick a destination on the curvature of the Earth, route through the twistiest canyons in between and challenge others to beat her to it. See me filling that other bike's fuel tank? She's also a supertanker or so they refer to her in disbelief. No sport bike should be this potent. And when she's out on the hunt, that's exactly what she is.

Still more miles to put on this year, more horizons to cross over and unsuspecting riders who are yet to have their worldviews turned upside down by my SuperTrapp complimented sport bike. Or is it a touring bike that's sporty? Who knows! They just know that if not from the outset, by the the end of the day, she's like dairy cream, she always rises to the top to lead and dominate them all.

[jwells]

2017 has been a continuation of 2016's superlative riding season. My SuperTrapp is such a great exhaust! It never needs maintenance, other than cleaning and the occasional sanding to restore its beautiful metallic luster. Just get on and ride, the SuperTrapp keeps everything in check so that all you have to do is enjoy the power and crisp throttle response. But that's just the first part of this story. This bike, with its SuperTrapp, is also a lethal long distance scalpel. See the GPS? That's to pick a destination on the curvature of the Earth, route through the twistiest canyons in between and challenge others to beat her to it. See me filling that other bike's fuel tank? She's also a supertanker or so they refer to her in disbelief. No sport bike should be this potent. And when she's out on the hunt, that's exactly what she is.

Still more miles to put on this year, more horizons to cross over and unsuspecting riders who are yet to have their worldviews turned upside down by my SuperTrapp complimented sport bike. Or is it a touring bike that's sporty? Who knows! They just know that if not from the outset, by the the end of the day, she's like dairy cream, she always rises to the top to lead and dominate them all.

AWESOME!!!
Thanks for the update, bike looks amazing for that many miles-keep it up!