Rm125 cylinder difference?

dx787
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dx787
Edited Date/Time 9/17/2017 6:53pm
I just bought a new cylinder for my 01 rm125 from partzilla. My current head has a cast section on the left side where new one is open. Am I missing something??




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seth505
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seth505 9/16/2017 10:40pm
9/16/2017 10:40pm
Does the part # check out as an actual 2001? Hard to see here but my 2003 had the open version for powervalve assembly (behind the thick black hose).



dx787
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dx787 9/17/2017 5:21am
9/17/2017 5:21am
Part number is 11200-36840 which is for k1/k2. I googled 01 rm125 cylinder head and all images had the open power valve. On partzilla diagram, there doesn't show a cover. But there is two threaded holes so im assuming there is a cover plate?
Bruce372
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Bruce372 9/17/2017 8:29am
9/17/2017 8:29am
I think the one you had was a 2003. The one you bought is 01 or 02
Bruce372
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Bruce372 9/17/2017 8:30am
9/17/2017 8:30am
seth505 wrote:
Does the part # check out as an actual 2001? Hard to see here but my 2003 had the open version for powervalve assembly (behind the...
Does the part # check out as an actual 2001? Hard to see here but my 2003 had the open version for powervalve assembly (behind the thick black hose).



Did you buy that bike used? Don't think that is 2003 cylinder

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Bruce372
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Bruce372 9/17/2017 9:28am
9/17/2017 9:28am
dx787 wrote:
Bike was used and current cylinder had been sleeved. Don't know if it is what came on the bike stock. But now that I have the...
Bike was used and current cylinder had been sleeved. Don't know if it is what came on the bike stock. But now that I have the new cylinder, what goes over the new opening? The diagram on partzilla doesn't show anything covering it.
http://www.partzilla.com/parts/search/Suzuki/Motorcycle/2001/RM125/CYLI…
That was meant for Seth.

On the 2001-2002, a metal wire actuator comes out of the bottom end to actuate the power valve. Additionally, the recess on the cylinder is for a spring with a turn key on top, that is covered by a plate with two bolts to hold it in place. The power valve on 2001-2 is adjustable.

The 2003 was a single cylinder year, and I think they changed the power valve setup so it didn't have the adjuster. 2004 was a longer cylinder, as was 2005 but these have different powervalves.

I think you had a 2003 cylinder and I think you bought a 2001-2
Bruce372
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Bruce372 9/17/2017 9:32am
9/17/2017 9:32am


Bruce372
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Bruce372 9/17/2017 9:33am
9/17/2017 9:33am
Here is a Google pic of the pv adjuster
Bruce372
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Bruce372 9/17/2017 9:39am
9/17/2017 9:39am
Here is a Google pic of the pv adjuster, see the turn key, stopper plate and bolts ...
dx787
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dx787 9/17/2017 9:45am
9/17/2017 9:45am
Awesome, that's the info I needed. Next question is will powervavle from this cylinder work or will I need one specifically for an 01/02 cylinder.
The parts were on a different diagram so that's why I didn't see them.
search/Suzuki/Motorcycle/2001/RM125/EXHAUST+VALVE+%28MODEL+K1-K2%29/parts.html
Bruce372
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Bruce372 9/17/2017 10:12am
9/17/2017 10:12am
I would imagine you are going to need to source many parts for the new cylinder.
dx787
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dx787 9/17/2017 10:49am
9/17/2017 10:49am
Would I be better just swapping the 01 I bought out for the 03 cylinder and reusing the powervalve? Some of the parts are "obsolete" and would be another $400 to buy them . Is there an advantage to the adjustable powervalve? Why did they discontinue it. Gotta love used stuff.
dx787
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dx787 9/17/2017 11:37am
9/17/2017 11:37am
Would I be better just swapping the 01 I bought out for the 03 cylinder and reusing the powervalve? Some of the parts are "obsolete" and would be another $400 to buy them . Is there an advantage to the adjustable powervalve? Why did they discontinue it. Gotta love used stuff.
Bruce372
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Bruce372 9/17/2017 12:00pm
9/17/2017 12:00pm
i would just find the most inexpensive way of getting the bike running again.

Ive never had a 2003 model, but i think thats the cylinder you have on the bike originally- i would try and get that verified.
dx787
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dx787 9/17/2017 12:10pm
9/17/2017 12:10pm
Im good with that. I just added all the parts for new power valve and it came out to $612 without shipping and there was one piece that was obsolete that I would have to hunt down. I'll verify the head was an 03, return this 01. Thanks for all the input bruce
seth505
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seth505 9/17/2017 1:03pm
9/17/2017 1:03pm
dx787 wrote:
Bike was used and current cylinder had been sleeved. Don't know if it is what came on the bike stock. But now that I have the...
Bike was used and current cylinder had been sleeved. Don't know if it is what came on the bike stock. But now that I have the new cylinder, what goes over the new opening? The diagram on partzilla doesn't show anything covering it.
http://www.partzilla.com/parts/search/Suzuki/Motorcycle/2001/RM125/CYLI…
Bruce372 wrote:
That was meant for Seth. On the 2001-2002, a metal wire actuator comes out of the bottom end to actuate the power valve. Additionally, the recess...
That was meant for Seth.

On the 2001-2002, a metal wire actuator comes out of the bottom end to actuate the power valve. Additionally, the recess on the cylinder is for a spring with a turn key on top, that is covered by a plate with two bolts to hold it in place. The power valve on 2001-2 is adjustable.

The 2003 was a single cylinder year, and I think they changed the power valve setup so it didn't have the adjuster. 2004 was a longer cylinder, as was 2005 but these have different powervalves.

I think you had a 2003 cylinder and I think you bought a 2001-2
Good catch, I totally forgot but I believe my cylinder was a 2002. I have had several bike since and had thought I remember the 02-03 being the same but you are probably correct.
Matt Fisher 9/17/2017 6:53pm
9/17/2017 6:53pm
dx787 wrote:
Im good with that. I just added all the parts for new power valve and it came out to $612 without shipping and there was one...
Im good with that. I just added all the parts for new power valve and it came out to $612 without shipping and there was one piece that was obsolete that I would have to hunt down. I'll verify the head was an 03, return this 01. Thanks for all the input bruce
I have a complete 02 cylinder with power valve assembly.
It ran great but the transmission started popping out of gear so I parted most of the bike out.

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dx787
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dx787 9/17/2017 6:59pm
9/17/2017 6:59pm
How much are you looking to get for it.
Matt Fisher 9/18/2017 5:59pm
9/18/2017 5:59pm
Check your email, PM (which goes to your email) sent.

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