2004 Honda CR 125

bd
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bd
Edited Date/Time 11/15/2013 5:52am
Any reccomendations on making the engine faster?
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oldx
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oldx 7/8/2009 3:47pm
7/8/2009 3:47pm
Oh shit!! Are you ever gonna get it.
bd
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bd 7/8/2009 3:53pm
7/8/2009 3:53pm
oldx wrote:
Oh shit!! Are you ever gonna get it.
Never!
Tiki
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Tiki 7/8/2009 3:59pm
7/8/2009 3:59pm
Cut the tail pipe in half, louder but revs quicker. Stroke it, work on the suspension.
WSR
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WSR 7/8/2009 5:23pm
7/8/2009 5:23pm
I'm working on one right now for a guy. It chewed up a left side crank bearing and cylinder.

The Shop

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Wolfman
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Wolfman 7/8/2009 5:58pm
7/8/2009 5:58pm
CR500Rider wrote:
Here's an article that details some stuff done to my 01'. Maybe some of it will help.

http://twostrokemotocross.com/2009/05/budget-racer-2001-honda-cr125/
You dick. I just went and dug that link up too! Wink

That is a good article. I had a '98 CR125 and I had Eric Gorr go thru it and put a bills pipe and silencer on it and it was still slow. Sounded bad ass though! I kept that thing for probably 2 months and got rid of it.
Wandell
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Wandell 7/8/2009 7:17pm
7/8/2009 7:17pm
BIG BORE kit!!
CR500Rider
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CR500Rider 7/8/2009 8:18pm
7/8/2009 8:18pm
Wandell wrote:
BIG BORE kit!!
Isn't 2004 the weird one for big bores?
CR500Rider
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CR500Rider 7/8/2009 8:20pm
7/8/2009 8:20pm
CR500Rider wrote:
Here's an article that details some stuff done to my 01'. Maybe some of it will help.

http://twostrokemotocross.com/2009/05/budget-racer-2001-honda-cr125/
Wolfman wrote:
You dick. I just went and dug that link up too! ;) That is a good article. I had a '98 CR125 and I had Eric...
You dick. I just went and dug that link up too! Wink

That is a good article. I had a '98 CR125 and I had Eric Gorr go thru it and put a bills pipe and silencer on it and it was still slow. Sounded bad ass though! I kept that thing for probably 2 months and got rid of it.
It was easy to remember since it was my bike the article was about. I'm convinced the aluminum frame killed the 125 for Honda.
Wolfman
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Wolfman 7/8/2009 8:26pm
7/8/2009 8:26pm
It did.
Devil1nNj
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Devil1nNj 7/8/2009 8:37pm
7/8/2009 8:37pm
Put a 4 stoke 250f in it and get a cordless phone and microwave while you're at it.

Smile I kid best of luck in your endeavors!
minidad160 7/8/2009 10:04pm
7/8/2009 10:04pm Edited Date/Time 7/8/2009 10:08pm
Is there a picture of the air box with the holes drilled in it? Have an 02 with most of these mods but no holes in the air box. Always thought that trick doesn't really work. Cool article love how they comment on the 125 sound. Its my favorite especially with a fast rider.
CR500Rider
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CR500Rider 7/8/2009 10:39pm
7/8/2009 10:39pm
minidad160 wrote:
Is there a picture of the air box with the holes drilled in it? Have an 02 with most of these mods but no holes in...
Is there a picture of the air box with the holes drilled in it? Have an 02 with most of these mods but no holes in the air box. Always thought that trick doesn't really work. Cool article love how they comment on the 125 sound. Its my favorite especially with a fast rider.
Sure it works, it just becomes a question of what conditions you ride in. I'm in San Antonio and it rarely rains so that's not an issue. I haven't taken any pictures of it since I drilled the holes. Those air boxes are all over ebay if you want to experiment. The 05 and later air boot helps.
minidad160 7/8/2009 10:54pm
7/8/2009 10:54pm
minidad160 wrote:
Is there a picture of the air box with the holes drilled in it? Have an 02 with most of these mods but no holes in...
Is there a picture of the air box with the holes drilled in it? Have an 02 with most of these mods but no holes in the air box. Always thought that trick doesn't really work. Cool article love how they comment on the 125 sound. Its my favorite especially with a fast rider.
CR500Rider wrote:
Sure it works, it just becomes a question of what conditions you ride in. I'm in San Antonio and it rarely rains so that's not an...
Sure it works, it just becomes a question of what conditions you ride in. I'm in San Antonio and it rarely rains so that's not an issue. I haven't taken any pictures of it since I drilled the holes. Those air boxes are all over ebay if you want to experiment. The 05 and later air boot helps.
So do I drill 2 - 1/2" holes on each side or do I drill 6- 1/2" holes on each side? I have a tendency to go over board. Thanks
CR500Rider
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CR500Rider 7/9/2009 3:01am
7/9/2009 3:01am
minidad160 wrote:
Is there a picture of the air box with the holes drilled in it? Have an 02 with most of these mods but no holes in...
Is there a picture of the air box with the holes drilled in it? Have an 02 with most of these mods but no holes in the air box. Always thought that trick doesn't really work. Cool article love how they comment on the 125 sound. Its my favorite especially with a fast rider.
CR500Rider wrote:
Sure it works, it just becomes a question of what conditions you ride in. I'm in San Antonio and it rarely rains so that's not an...
Sure it works, it just becomes a question of what conditions you ride in. I'm in San Antonio and it rarely rains so that's not an issue. I haven't taken any pictures of it since I drilled the holes. Those air boxes are all over ebay if you want to experiment. The 05 and later air boot helps.
minidad160 wrote:
So do I drill 2 - 1/2" holes on each side or do I drill 6- 1/2" holes on each side? I have a tendency to...
So do I drill 2 - 1/2" holes on each side or do I drill 6- 1/2" holes on each side? I have a tendency to go over board. Thanks
The side of my air box looks like it was shot with a shotgun. Holes are everywhere. Expect to rejet.
supr_fly_tnt
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supr_fly_tnt 7/9/2009 5:03am
7/9/2009 5:03am
i had Eric Gorr bore my 05 to a 139. for the money, i couldnt ask for a better bike.

question for the gurus though: would head work be something i should look into even with the cylinder boring? or would that defeat the purpose? is it usually one or the other, or can both processes be done? for example, shaving the head and porting and polishing, along with boring the cylinder?

brent

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CR500Rider
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CR500Rider 7/9/2009 10:45am
7/9/2009 10:45am
Yes, you will most likely notice some gains with proper head milling. You'll also be stuck with running race gas if that's a problem.
MX Dad #27 7/9/2009 12:16pm
7/9/2009 12:16pm
supr_fly_tnt wrote:
i had Eric Gorr bore my 05 to a 139. for the money, i couldnt ask for a better bike. question for the gurus though: would...
i had Eric Gorr bore my 05 to a 139. for the money, i couldnt ask for a better bike.

question for the gurus though: would head work be something i should look into even with the cylinder boring? or would that defeat the purpose? is it usually one or the other, or can both processes be done? for example, shaving the head and porting and polishing, along with boring the cylinder?

brent
Eric built us a 144 fills in the bottom really well, 2 more peak HP than a stock 250f
supr_fly_tnt
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supr_fly_tnt 7/9/2009 12:53pm
7/9/2009 12:53pm
supr_fly_tnt wrote:
i had Eric Gorr bore my 05 to a 139. for the money, i couldnt ask for a better bike. question for the gurus though: would...
i had Eric Gorr bore my 05 to a 139. for the money, i couldnt ask for a better bike.

question for the gurus though: would head work be something i should look into even with the cylinder boring? or would that defeat the purpose? is it usually one or the other, or can both processes be done? for example, shaving the head and porting and polishing, along with boring the cylinder?

brent
MX Dad #27 wrote:
Eric built us a 144 fills in the bottom really well, 2 more peak HP than a stock 250f
yeah. he does good work. ive never had an issue running with the 250f's outside of the A/B pro guys...
bd
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bd 7/9/2009 1:17pm
7/9/2009 1:17pm














bd
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bd 7/9/2009 1:18pm
7/9/2009 1:18pm
bd wrote:
[IMG]http://i59.photobucket.com/albums/g291/debuono/IMG_1283.jpg[/IMG] [IMG]http://i59.photobucket.com/albums/g291/debuono/IMG_1287.jpg[/IMG] [IMG]http://i59.photobucket.com/albums/g291/debuono/IMG_1289.jpg[/IMG] [IMG]http://i59.photobucket.com/albums/g291/debuono/IMG_1288.jpg[/IMG] [IMG]http://i59.photobucket.com/albums/g291/debuono/IMG_1286.jpg[/IMG] [IMG]http://i59.photobucket.com/albums/g291/debuono/IMG_1289.jpg[/IMG] [IMG]http://i59.photobucket.com/albums/g291/debuono/IMG_1283.jpg[/IMG]














My new ride! 2004 Honda CR 125. The seller rode it a few times. Love the small bores.
newmann
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newmann 7/9/2009 1:28pm
7/9/2009 1:28pm
Sweet bike! Got my youngest son a lightly used KTM144. Talk about a pumped up on steroids 125. It's more fun than should be legal. Keeping my eye out for a lightly used 07 CR125 to trick out for myself. My oldest son is working on a KX125 big bore/stroker in a KX250F chassis. Well , dragging his feet on that project I should say........... It does put the fun back in moto.
thefactorypilot 7/9/2009 2:45pm
7/9/2009 2:45pm
That bike looks really fun. I miss riding 125s and seeing all of my friends on them at the track.
Cygnus
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Cygnus 7/9/2009 2:56pm
7/9/2009 2:56pm
How much cash BD? I am planning on selling my 06 CR85 and doing the an 03 -07 CR125 bigbore built to the hilt !
lumpy790
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lumpy790 7/9/2009 3:27pm
7/9/2009 3:27pm Edited Date/Time 4/17/2016 12:50am
Let me know if you need some CR125 parts..........the piston kits & extra rings are 139cc but the cylinder is stock bore.



bd
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bd 7/9/2009 4:14pm
7/9/2009 4:14pm
Paid $1,900 cash.
bd
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bd 7/9/2009 4:18pm
7/9/2009 4:18pm
Lumpy is all your parts for an '04?
Cygnus
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Cygnus 7/9/2009 5:46pm
7/9/2009 5:46pm
bd wrote:
Paid $1,900 cash.
Gotta love it ! Woohoo Laughing Cool

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