Want to beef up the low end on a 2001 CR125 - Dirt Rider . Net, Dirt Bikes - Motocross - Off-Road

03-24-2003, 11:59 AM

oldguy oldguy is offline

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Want to beef up the low end on a 2001 CR125

Last fall we talked to Eric Gorr about how to improve the low end response in thekids 2001CR125 cheaply. He suggested putting the exhaust manifold from a 2002 CR125 on. Well we finally got around to it yesterday and the results were great

. Thekid was testing it in the backyard and his first reation was look out holeshots.
Totally cost after purchase and shipping from Service Honda $35 and about 30 minutes.

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03-24-2003, 08:07 PM

Moto Squid Moto Squid is offline

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hey old guy...is he going to be racing @ gravity again? What classes, I seem to be thinking it is 125jr but have a foggy memory. what about C?

03-24-2003, 09:09 PM

oldguy oldguy is offline

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He will be in 125 Jr maybe a couple C's as well. Definately will be at Gravity it is his favorite track.

03-25-2003, 10:42 AM

enduroman

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Hey Old Guy,
That sounds like a mod I could do to my son's 01 CR125. Would you have part numbers handy, so I could order it? Plus any tips on any problems you encountered when you installed it, would be appreciated. Thanks

03-25-2003, 05:14 PM

oldguy oldguy is offline

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Enduroman
Exhaust flange (joint,EX. PIPE) 18352-KZ4-L20
Rubber exhaust ring (GASKET, EX. Joint) 18291-KZ4-700
Metal seal (SEAL, EX. JOINT) 91304-KZ4-L11
You could probably get by without the rubber o-ring and the metal seal but it isn't a bad idea for about $7 to get em.
The flange is a bolt on (3 bolts) 5 minute fix. Pull the 2 springs off, remove the pipe from the cylinder, unbolt the old flange and then bolt on the new one. The flange is about 1/4 inch longer so once you replace the pipe and springs you will have to loosen the bolts where the pipe braces go to the frame- 2 spots (1 by the expanaion chamber and one right in front of the pipe/silencer joint.
Total parts and shipping from service honda (DRN sponsor :thumb: ) $37.87

03-25-2003, 07:18 PM

Nevada Sixx Nevada Sixx is offline

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i wonder if there is a mod lke that for the 01 cr 250?

03-26-2003, 06:54 AM

enduroman

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Thanks Old Guy! That is just the info I needed. Appreciate the help!

03-26-2003, 10:16 AM

CRrider125 CRrider125 is offline

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i just ordered the flange. i hope it's as good as you say it is.
whats the difference? shape?size? or what?

03-26-2003, 11:08 AM

oldguy oldguy is offline

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1/4 inch longer and has an obstructed lower quadrant

#10

03-31-2003, 10:06 PM

trevor_zr600 trevor_zr600 is offline

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can comeone draw out what needs to be done to make one for my bike i have a lathe that i cna use and a milling machine so draw it out someone u say it has an obstructed lower quadrants wats thatdraw it please