Help with RM 125

X

xHaVoCx

Member

Jan 20, 2007

5

0

• Jan 20, 2007

• #1

I recently bought a 2003 Rm 125. It doesnt seem like it is putting out enough power, I am almost positive i should be able to get it going faster. I just put in New clutch , Rear Spokes , V force reeds, Chain. But I cannot find out why I am not getting the full power out of this bike. Any tips on what i should do or replace? My Clutch also feels very lose. Please leave some tips.

Thanks.

 

robwbright

Member

Apr 8, 2005

2,283

0

• Jan 21, 2007

• #2

How's the jetting? If you changed the reeds, it could have changed the jetting.

http://tsrsoftware.com/read-plugs.htm

http://justkdx.dirtrider.net/carbtuning.html

How long since the piston/ring were replaced?

 

X

xHaVoCx

Member

Jan 20, 2007

5

0

• Jan 21, 2007

• Thread starter
• #3

Not sure, I bought the bike used. Was told by someone also I might need a rebuild. Its just reving high but not going all that fast. Now if im not mistakin a 125 should go faster then 50 mph. I honestly dont know much about jetting and i didnt put the reeds in so I cant say much there. But ill look into that.

 

W

wirefryer#85

Member

May 26, 2006

158

0

• Jan 21, 2007

• #4

Any way you get some seasoned vet to take the bike out for a few laps? Could save you a pile of money.

 

whenfoxforks-ruled

Old MX Racer

~SPONSOR~

Oct 19, 2006

8,129

2

Merrillville,Indiana

• Jan 21, 2007

• #5

Clutch might be roasted if its not pulling up top.

 

X

xHaVoCx

Member

Jan 20, 2007

5

0

• Jan 24, 2007

• Thread starter
• #6

Just put a brand new clutch in it, Old one still had atleast half life.

 

C

Chili

Lifetime Sponsor - Photog Moderator

Apr 9, 2002

8,062

17

• Jan 24, 2007

• #7

Is the clutch properly adjusted or is it possibly slipping? As far as a 125 going faster than 50MPH, it may or may not depending on the gearing. Other possibilities besides poor jetting may be the powervalve not working correctly.

 

E

earl pittz

Uhhh...

Mar 9, 2007

63

0

• Mar 10, 2007

• #8

yz 125

Does it have a lack of power or just dosn't go very fast?

 

M

micshol

Member

Feb 7, 2007

22

0

• Jun 4, 2007

• #9

that bike should do 70. have a 99 rm 125 and it has no problems getting there with a little throttle left.