Josh I know the correct thing to do is phone Ivan and tell him what your running, as he doesn't sell his kits online.
I did phone him when I bought the kit for the 500 triple...but found these kits in the UK. http://www.inter-bike.co.uk/ivans-jet-k ... t-kit.html
How does your bike run now with the new pipe after removing the Kerker?
New s/h Kerker for Rexxxx
- kawadave
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Re: New s/h Kerker for Rexxxx
Don't knock my turbo lag - it gives your naturally aspirated a chance..
2013 Motogp tipping champ.
83 GPZ 750 Turbo
78 Z1R 1000
80 Z1R Mk11
07 ZRX 1200r
83 GSX1000sd Katana
https://www.youtube.com/user/htmonaro
2013 Motogp tipping champ.
83 GPZ 750 Turbo
78 Z1R 1000
80 Z1R Mk11
07 ZRX 1200r
83 GSX1000sd Katana
https://www.youtube.com/user/htmonaro
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Re: New s/h Kerker for Rexxxx
Righto. I was running Ivan's kit for pods but changed to a setup similar to the Factory Pro 2.5 but still using Ivan's needles. Hopefully someone can help you with the jetting if you decide to keep the air box. I'll dig up my old jetting for pods if you want it for reference.
My bike was running strong before the change of exhaust so I couldn't really tell the difference. I never had a chance to do a dyno run with the Kerker after the engine work. It was putting out about 125-130 bhp with the stock engine and the Kerker though.
My bike was running strong before the change of exhaust so I couldn't really tell the difference. I never had a chance to do a dyno run with the Kerker after the engine work. It was putting out about 125-130 bhp with the stock engine and the Kerker though.
"The measure of a man is what he does with power" - Plato
- Nelso
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Re: New s/h Kerker for Rexxxx
Yeah, mine dropped a heap of bottom end and mid range when I took the Akrapovic off and fitted the Kerker. I have pods and Ivan's stage 3 jet kit that was leaned out a bit when it was dyno tuned, as it was a bit rich for the Akra. The Kerker breaths all right at the top end of the rev range (I also cleaned up the shit welds inside the header when I fitted it so there was less restriction), but it doesn't pull anywhere near as hard in the rev range that I ride in on the street. It's also more than twice the weight of the Akra; but, it looks shit hot.Wattie wrote:Word on the street is that the kerker does not produce the power of the other pipes. But they do look cool


Green '08 ZRX1200 Road bike
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Green 2012 ZX10 Track/race bike
Green '89 H1 ZXR750 race bike
'89 RMX250 motard race bike
2015 YZ450
2017 KTM EXC300
- Glen
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Re: New s/h Kerker for Rexxxx
Mission accomplished I sayNelso wrote:Yeah, mine dropped a heap of bottom end and mid range when I took the Akrapovic off and fitted the Kerker. I have pods and Ivan's stage 3 jet kit that was leaned out a bit when it was dyno tuned, as it was a bit rich for the Akra. The Kerker breaths all right at the top end of the rev range (I also cleaned up the shit welds inside the header when I fitted it so there was less restriction), but it doesn't pull anywhere near as hard in the rev range that I ride in on the street. It's also more than twice the weight of the Akra; but, it looks shit hot.Wattie wrote:Word on the street is that the kerker does not produce the power of the other pipes. But they do look cool![]()

It's really all about standing around drinking Dave's beer.
2008 ZRX1200 Greeeeen Roadie
2016 KTM Superduke 1290 Oraaaaange
2016 Seadoo RXTX300
Too many toys.......work is getting in the way!!!!
2008 ZRX1200 Greeeeen Roadie
2016 KTM Superduke 1290 Oraaaaange
2016 Seadoo RXTX300
Too many toys.......work is getting in the way!!!!
- kawadave
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Re: New s/h Kerker for Rexxxx
Rex received an Ivan's jet today...octopus is now in the bin...snorkel will be removed tomorrow and holes drilled in the air box as per instructions. 

Don't knock my turbo lag - it gives your naturally aspirated a chance..
2013 Motogp tipping champ.
83 GPZ 750 Turbo
78 Z1R 1000
80 Z1R Mk11
07 ZRX 1200r
83 GSX1000sd Katana
https://www.youtube.com/user/htmonaro
2013 Motogp tipping champ.
83 GPZ 750 Turbo
78 Z1R 1000
80 Z1R Mk11
07 ZRX 1200r
83 GSX1000sd Katana
https://www.youtube.com/user/htmonaro