Question about 2003 Suzuki RM 125

2 Answers

My 2003 rm 125 transmission slips out of gear.

My bike shifts into first or sixth. All the other gears slip out. Both the dogs and the cogs look good with minimal wear and the shifting forks are not bent. I was told the snap rings need to be changed but do I need to change them if I never took them off in the first place? I did split the case in half to examine it because a screw came loose. I replaced the screw with no change. Its now apart and I can not seem to find anything wrong? Please help.

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

Im having the same problem with my 2003 rm 125, tombones49 is wright about the shift forks.

Posted on Jun 14, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 3,567 Answers

The snap rings should be fine. Removing them does not make them bad if done properly. If you can actually see the bend in a shift fork that is known to be bent, you are a rare man. Put a bent fork next to a new fork and you can't see the difference. A bent shift fork doesn't necessarily look bent. There are three shift forks in the tranny. Replace all three and there will be no doubt as to " did I change out the right fork ". Assuming you have no repair manual, go to the site below to see a parts diagram for your bike.

Posted on May 27, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Transmission will shift into, or out of gear, but will not spring back into position. For instance. If you want to shift into first gear, you have to push down on the shift lever, then back up just a...

If shaft and lever is undamaged, more than likely the gear selector shaft spring is misaligned or broken. Place in neutral. Remove pinch bolt from gear lever and remove lever. Undo covers and sprocket for access to selector mechanism.

The link below has exploded view diagrams and part numbers/names for the whole bike in sections.

Gear shifting is 6th from bottom of list.
Goodluck and Cheers.

May 19, 2010 | 2003 Suzuki RM 125

1 Answer

My rm 125 is jumping out of gear?

Do you "kick shift" a lot? (shift at high rpm without the clutch) or did the gear box run low on oil at any point that you know of? If so the syncros in the gear box may be worn. Probably not a do it yourself fix, unless you are familiar with this.
Good luck. Please rate, thanks.

Mar 03, 2010 | 2003 Suzuki RM 125

2 Answers

1978 suzuki dr 370 motorcyle just started having a problem. When in neutral the transmission makes a popping type noise intermittenly. when this occurs it tries to jump into gear. ant idea

The popping noise is gear dogs trying to engage a gear. You did not say that the bike doesn't shift smoothly so I would tend to rule out a bent shift fork. The neutral stopper pin may be worn or the stopper spring or other springs may be broken (see diagram). Another possibility is a broken stationary gear circlip which would let the gear wander a bit on the shaft. most the parts are available at Babbitt's. Go to


Dec 22, 2009 | 2003 Suzuki RM 125

1 Answer

Gears slip from first into neutral when throttle is eceralated

transmission repairs required....shift forks are burnt & engagement dogs on gears are rounded off..

Oct 31, 2009 | 2003 Yamaha V Star Classic

1 Answer

2nd gear slippage

No this is a gearing problem. I have the same problems. On a bike there are gears in the transmission the low parts in a gear are called windows and the high parts are called dogs. When the edges of the dogs get rounded off due to improper shifting it will slip out of gear and or not go into gear at all. You have to have the gears replaced. Its $500 if you know someone $900 if you dont.

Jul 08, 2009 | 1994 Suzuki RF 900 R

1 Answer

I have a suzuki rm 125 1994 model when i pull the clutch lever in to put it in gear the clutch doesnt work t jst crunches into gear

Adjust the clutch cable to allow about 1/4" free play at the end of the clutch handle. Don't put the bike in gear until the rpms are near idle speed. The clutch is working fine if the bike does not lurch forward when going into gear at idle speed. Dirty, gritty oil in the gearbox can make the clutch grab. Consider changing oil if grabbing is the problem. The "crunch" you hear is the slider gear engaging into the driven gear. The higher the engine speed when being put into gear the louder the crunch. The slider gear engaging "dogs" can break. Crunching into gear is hard on the gears.

Post a comment to let me know how you come out on this.

Jun 04, 2009 | 2003 Suzuki RM 125

2 Answers

Gears slip

I am a salesman from We mainly trade flashlight and other electronics. Feel free to contact us if you ar einterested in it, thanks.

Apr 19, 2009 | Schwinn Mesa Gs Mountain Bike

3 Answers

Honda cbr900rr transmission , slipping out of 2nd gear into neutral, does engine need to be pulled apart to get to gearbox

Hi Jason..

I had exact same problem.. bottom line I had to replace selector forks (all three) and second gear cog.. If u do replace a gear cog then please take a tip from me (lesson hard learn't). Have all your gears undercut at the same time or it will slip out of another gear.. I got my bike back after 2 nd gear done and on the same day 3 rd gear started to slip. Had to send bike back and have all the cogs undercut... Now its fine.

And yes u do need to remove motor to open gearbox and u will need to replace gaskets..


Mar 04, 2009 | 1997 Honda CBR 900 RR Fireblade

Not finding what you are looking for?
2003 Suzuki RM 125 Logo

907 people viewed this question

Ask a Question

Usually answered in minutes!

Top Suzuki Experts


Level 3 Expert

76649 Answers

Arnie Burke
Arnie Burke

Level 3 Expert

4535 Answers


Level 2 Expert

83 Answers

Are you a Suzuki Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides