2003 Kx 125 - Project Fun25

JImmyb1998
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Brooklet, GA, USA
JImmyb1998 5/4/2016 8:35am
5/4/2016 8:35am
Really enjoyed reading this entire thread. I'm actually in the middle of completely rebuilding a 2003 KX125 from the frame up for my son and used a lot of your build ideas. We race the Southern Off-Road Championship Series, www.sorcs.net, and several GNCC's. He races for Team Kawasaki of Statesboro. He's moving up from the mini class and coming off a 2015 KX100. He's only 14 but 5'8" so he out grew mini's. We thought he was going to move up to a 2015 KX250F. He started practicing and doing a few races on my KX250F and he was doing OK, complained about the weight and not being able to "flick it around". He borrowed a friends RM125 and DESTROYED our test track and came back with a huge grin on his face. I went and bought a donor KX125 that week for 850 bucks, RUNNING!!

Total frame off restoration. I just got the motor back from Eric Gorr with the 144 kit. We added a 7oz flywheel weight. Brand new Hot Rods crank and bottom end. Sent suspension off to Factory Connection. Full Pro Circuit exhaust with shorty 304. IMS oversized tank. EVERY bearing replaced. Powder coated frame. Polished swing arm. All new controls. All new plastics with updated front fender and number plate with custom graphics. Still waiting on new set of DNA wheels, black with green hubs.

What year is your fender a front plate?
www.sorcs.net
https://www.facebook.com/teamkawasakiofstatesboro/?fref=ts

Here are a few pics.

Thanks,
Jimmyb






1
SeaClassExpert 5/4/2016 6:03pm
5/4/2016 6:03pm
JImmyb1998 wrote:
Really enjoyed reading this entire thread. I'm actually in the middle of completely rebuilding a 2003 KX125 from the frame up for my son and used...
Really enjoyed reading this entire thread. I'm actually in the middle of completely rebuilding a 2003 KX125 from the frame up for my son and used a lot of your build ideas. We race the Southern Off-Road Championship Series, www.sorcs.net, and several GNCC's. He races for Team Kawasaki of Statesboro. He's moving up from the mini class and coming off a 2015 KX100. He's only 14 but 5'8" so he out grew mini's. We thought he was going to move up to a 2015 KX250F. He started practicing and doing a few races on my KX250F and he was doing OK, complained about the weight and not being able to "flick it around". He borrowed a friends RM125 and DESTROYED our test track and came back with a huge grin on his face. I went and bought a donor KX125 that week for 850 bucks, RUNNING!!

Total frame off restoration. I just got the motor back from Eric Gorr with the 144 kit. We added a 7oz flywheel weight. Brand new Hot Rods crank and bottom end. Sent suspension off to Factory Connection. Full Pro Circuit exhaust with shorty 304. IMS oversized tank. EVERY bearing replaced. Powder coated frame. Polished swing arm. All new controls. All new plastics with updated front fender and number plate with custom graphics. Still waiting on new set of DNA wheels, black with green hubs.

What year is your fender a front plate?
www.sorcs.net
https://www.facebook.com/teamkawasakiofstatesboro/?fref=ts

Here are a few pics.

Thanks,
Jimmyb






JimmyB, the world needs more dads like you who go out and restore things rather than buying junior a 7k four stroke that he doesn't need. Please keep that build updated.
JImmyb1998
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JImmyb1998 5/6/2016 11:03am
5/6/2016 11:03am
Sea Class Expert, thanks and I sure will.

Jimmyb
JImmyb1998
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JImmyb1998 6/11/2016 8:32am
6/11/2016 8:32am
Well it's pretty much done. Wating on the Boyesen clutch and ignition coversm bark busters, case saver, rear brake, and frame guards.























1

The Shop

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Markopolo400
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Markopolo400 6/11/2016 11:19am
6/11/2016 11:19am
Nice build
2
Camber75
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Camber75 6/11/2016 7:52pm
6/11/2016 7:52pm
What jetting are you running with your 144 kit? I have Gorrs set up also and it's breaking up on top. I'm in Md at sea level, similar to you. Just curious what you ended up at?
JImmyb1998
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JImmyb1998 6/17/2016 7:12am
6/17/2016 7:12am Edited Date/Time 6/17/2016 7:14am
Camber, right now it's at the stock setting and running great. Changing the needle to lean it out just a bit for a little more bottom end snap. We only race hare scrambles so we don't see much at the top but at WOT it screams. I'll try to post a video of him testing it out at our practice track. Also, we're running 50/50 C-12 and 93 pump gas mixed with Castor 927 at 4 oz's per gallon.
JImmyb1998
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JImmyb1998 6/17/2016 7:27am
6/17/2016 7:27am
Thanks Markopolo!!!
Kx125rider 6/17/2016 5:28pm
6/17/2016 5:28pm
Hi, how do you guys like the 144? My 125 motor is stock right now and im thinking about going to 144 this winter.
JImmyb1998
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JImmyb1998 6/18/2016 5:45am
6/18/2016 5:45am
KX125rider, LOVE it....best 500 bucks we spent on the bike. I weigh 210, my son weighs 150. I rode it the other day for a minute and the power was ridiculous. We did everything Eric Gorr recommended, Pro Circuit Pipe with Shorty 304 silencer, Vforce3 reeds, left jetting at stock setting. We added a 7oz fly wheel weight.. According to Gorr's website his 144 puts out as much peak power as a stock 250F.
Kx125rider 6/18/2016 7:26am
6/18/2016 7:26am
JImmyb1998 wrote:
KX125rider, LOVE it....best 500 bucks we spent on the bike. I weigh 210, my son weighs 150. I rode it the other day for a minute...
KX125rider, LOVE it....best 500 bucks we spent on the bike. I weigh 210, my son weighs 150. I rode it the other day for a minute and the power was ridiculous. We did everything Eric Gorr recommended, Pro Circuit Pipe with Shorty 304 silencer, Vforce3 reeds, left jetting at stock setting. We added a 7oz fly wheel weight.. According to Gorr's website his 144 puts out as much peak power as a stock 250F.
Ok thanks, sounds sick
Kx125rider 6/18/2016 4:31pm
6/18/2016 4:31pm
That thing sounds wicked
1
JImmyb1998
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JImmyb1998 6/21/2016 10:06am
6/21/2016 10:06am
Thanks!!!
JImmyb1998
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JImmyb1998 6/21/2016 10:09am
6/21/2016 10:09am
Camber75 wrote:
What jetting are you running with your 144 kit? I have Gorrs set up also and it's breaking up on top. I'm in Md at sea...
What jetting are you running with your 144 kit? I have Gorrs set up also and it's breaking up on top. I'm in Md at sea level, similar to you. Just curious what you ended up at?
Camber, right now it's at the stock setting and running great. Changing the needle to lean it out just a bit for a little more bottom end snap. We only race hare scrambles so we don't see much at the top but at WOT it screams. I'll try to post a video of him testing it out at our practice track. Also, we're running 50/50 C-12 and 93 pump gas mixed with Castor 927 at 4 oz's per gallon. Here are 2 videos so you can hear it scream.

https://youtu.be/7oJmpu-29P4

https://youtu.be/rCk0X3dxNU8

1
MaxPower
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MaxPower 6/25/2016 7:02pm
6/25/2016 7:02pm
You did a really nice job. The bike looks great
JImmyb1998
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JImmyb1998 6/28/2016 4:05pm
6/28/2016 4:05pm
Thanks.
Dillpickle312 1/15/2017 9:09pm
1/15/2017 9:09pm
B1rdman93 wrote:
Finally got the rear suspension mounted up. Once the motor is back together it will be going in. Wheels to be laced up soon. [img]https://p.vitalmx.com/photos/forums/2014/01/18/42470/s1200_IMG_4405.jpg[/img] Some...
Finally got the rear suspension mounted up. Once the motor is back together it will be going in. Wheels to be laced up soon.

Some more parts that were delivered.




What is the exact color powder you used?

Pit Row

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nwallace44 5/13/2017 3:13pm
5/13/2017 3:13pm
Nice bike man, how did you clean the pipe?
B1rdman93
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B1rdman93 8/24/2017 6:58pm
8/24/2017 6:58pm
I used a couple of different 3M scrub pads.
B1rdman93
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B1rdman93 8/24/2017 6:59pm
8/24/2017 6:59pm
I am looking for 03-07 kx flo green plastic.. Has anyone had any luck finding?
B1rdman93
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B1rdman93 5/22/2019 5:31am
5/22/2019 5:31am
B1rdman93 wrote:
Finally got the rear suspension mounted up. Once the motor is back together it will be going in. Wheels to be laced up soon. [img]https://p.vitalmx.com/photos/forums/2014/01/18/42470/s1200_IMG_4405.jpg[/img] Some...
Finally got the rear suspension mounted up. Once the motor is back together it will be going in. Wheels to be laced up soon.

Some more parts that were delivered.




Dillpickle312 wrote:
What is the exact color powder you used?
Sorry for the late response. Been away for a bit. But Im about to reface this bike and give it some cool add ons.

I dont recall the exact color. I just picked a sample from powder coater that I just liked.
B1rdman93
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B1rdman93 6/15/2019 5:37am
6/15/2019 5:37am
Any one have recommendations for a part number for this pin? Is it a standard brake pin? Can’t find anything in diagrams.



B1rdman93
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B1rdman93 6/20/2019 7:17pm
6/20/2019 7:17pm
B1rdman93 wrote:
Any one have recommendations for a part number for this pin? Is it a standard brake pin? Can’t find anything in diagrams. [img]https://p.vitalmx.com/photos/forums/2019/06/15/354596/s1200_E039BACF_A175_47C4_B41C_045EE9696816.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2019/06/15/354598/s1200_05FD9541_1618_4104_8A38_10D8977BC2F1.jpg[/img]
Any one have recommendations for a part number for this pin? Is it a standard brake pin? Can’t find anything in diagrams.



I wanted to reply now that this thread is in the Bike Build section. Please let me know if anyone may have an idea of part number. Thanks!
ledger
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ledger 6/20/2019 9:01pm
6/20/2019 9:01pm Edited Date/Time 6/20/2019 9:19pm
It's part of the carrier and not sold separately (bummer). I just cleaned mine, put a coat of grease on it and slid it into the rubber boot. Might as well clean the rubber boot as well.
Kennyfreemoney 6/25/2019 2:54pm
6/25/2019 2:54pm
B1rdman93 wrote:
I wanted to reply now that this thread is in the Bike Build section. Please let me know if anyone may have an idea of part...
I wanted to reply now that this thread is in the Bike Build section. Please let me know if anyone may have an idea of part number. Thanks!
no part number, but I do have PC Linkage for you! Can't seem to get a PM to go through. text me or email me. 3072724998 kennyfreemoney@gmail.com
B1rdman93
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B1rdman93 9/10/2019 7:31pm
9/10/2019 7:31pm
Current Update: Bike is in pieces, but slowly building it back. I have been stashing parts for another project that I will be beginning soon. This one may have to find a new home. Stay toned!




1
B1rdman93
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B1rdman93 9/29/2019 7:08pm
9/29/2019 7:08pm
I recently came across some rare parts thanks to another Vital member. I'm leaning towards keeping this bike more and more each day. Here are a few pictures of brand new PC clamps and JD electronic Ignition. These are the same ones that PC ran.







3
Premix4Life 9/30/2019 10:21am
9/30/2019 10:21am
The triple clamps might as well be the "cherry" to top-off this build! Excellent job, Sir.
kxpete
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kxpete 10/1/2019 9:11pm
10/1/2019 9:11pm
Nice

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