1995 KDX220SR piston replace? Same as US models?

[Tokyotim]

Hello would anyone happen to know for sure if the models share the same piston? I know according to this forum the piston needs replaced asap as it’s known to grenade. I cannot seem to find out but the part numbers on US and Japanese models piston are not the same so that worries me. I asked Wiseco direct and they sent an email that they had no idea. Anyone replaced their 220SR Japanese piston

[JimmyB]

The part #s look the same, old part # was 13001-1423, new # 13001-0133, could go with a Wiseco or Wossner..

https://www.genuinekawasakiparts.com/oe ... t-piston-s

https://en.impex-jp.com/catalogs/moto/k ... 91028.html

https://en.impex-jp.com/catalogs/moto/k ... 91840.html

[Tokyotim]

The part #s look the same, old part # was 13001-1423, new # 13001-0133, could go with a Wiseco or Wossner..

https://www.genuinekawasakiparts.com/oe ... t-piston-s

https://en.impex-jp.com/catalogs/moto/k ... 91028.html

https://en.impex-jp.com/catalogs/moto/k ... 91840.html

Thank you I emailed Wiseco and asked them directly about it and this was their reply “I would have no idea what dimensions would be different for the models. Sorry”. I thought surely someone at some point in time had to have asked them about Japanese spec pistons. Maybe customer service was feeling lazy. I was going to order a KDX220R piston from Wiseco but wanted to be sure before I shipped it from the US to Japan

[JimmyB]

Sorry Tim I don't think Wiseco in the US have ever dealt with the 220SR, maybe try the UK or Australia, I have many sources in Japan for car/truck parts but have only imported a few bikes that were not available in North America and have always dealt with Impex or Webike for parts not sold here, the 3 links I posted are from a US Kawasaki site, the second is Impex out of Japan for my Canadian model(02 220R) and the last is also Impex out of Japan listing your 1995 220SR, all have the same part #s for pistons and rings for the 220R and 220SR, original part # for the OEM piston was 13001-1423 and is superseded by the new # 13001-0133 and rings are part # 13008-1159, the pistons appear to be the same for both bikes. Could you please post a link to the sites with the different part #s, just curious. I do have a new Wossner 220R piston for my bike here if you need any measurements to compare.

This is what the OEM set of 2 rings looked like for the 220R, the 3rd thin band(ring) was installed first in one of the ring grooves (I think it was the lower groove??) and then the ring installed over it, I believe this design slightly increased the outward pressure of the lower ring to the cylinder wall. I have seen a few Kawi bikes from the 70s-80s that had a similar OEM set up, but I don't recall seeing it in aftermarket piston/ring kits.

https://www.bing.com/images/search?view ... ajaxserp=0

[Tokyotim]

Sorry Tim I don't think Wiseco in the US have ever dealt with the 220SR, maybe try the UK or Australia, I have many sources in Japan for car/truck parts but have only imported a few bikes that were not available in North America and have always dealt with Impex or Webike for parts not sold here, the 3 links I posted are from a US Kawasaki site, the second is Impex out of Japan for my Canadian model(02 220R) and the last is also Impex out of Japan listing your 1995 220SR, all have the same part #s for pistons and rings for the 220R and 220SR, original part # for the OEM piston was 13001-1423 and is superseded by the new # 13001-0133 and rings are part # 13008-1159, the pistons appear to be the same for both bikes. Could you please post a link to the sites with the different part #s, maybe I am missing something, I do have a new Wossner 220R piston for my bike here if you need any measurements to compare.

https://www.bing.com/images/search?view ... ajaxserp=0

Would that new piston model from the Japanese site be OK to order? Does it have to be replaced with a piston from Wiseco or Wossner? The problem with the piston is it’s not forged correct? I live in a small Japanese apartment with NO tools so I will have to take the bike to a shop and have them measure the piston, but it’s so cheap to order I may just buy one anyway and see if it fits if I have to pay to have the bike torn down. I have spent 180$ on worse…if I have the piston out I will make a nice 4K video of the piston in great detail so people in the future can compare it to the US model piston

[Tokyotim]

Sorry Tim I don't think Wiseco in the US have ever dealt with the 220SR, maybe try the UK or Australia, I have many sources in Japan for car/truck parts but have only imported a few bikes that were not available in North America and have always dealt with Impex or Webike for parts not sold here, the 3 links I posted are from a US Kawasaki site, the second is Impex out of Japan for my Canadian model(02 220R) and the last is also Impex out of Japan listing your 1995 220SR, all have the same part #s for pistons and rings for the 220R and 220SR, original part # for the OEM piston was 13001-1423 and is superseded by the new # 13001-0133 and rings are part # 13008-1159, the pistons appear to be the same for both bikes. Could you please post a link to the sites with the different part #s, just curious. I do have a new Wossner 220R piston for my bike here if you need any measurements to compare.

This is what the OEM set of 2 rings looked like for the 220R, the 3rd thin band(ring) was installed first in one of the ring grooves (I think it was the lower groove??) and then the ring installed over it, I believe this design slightly increased the outward pressure of the lower ring to the cylinder wall. I have seen a few Kawi bikes from the 70s-80s that had a similar OEM set up, but I don't recall seeing it in aftermarket piston/ring kits.

https://www.bing.com/images/search?view ... ajaxserp=0

I found this quote from user frame78 on this forum who I believe is no longer active, he said “ The best way to deal with piston problems is to change the con rod to a Kx version, then the normal Kx/ kdx piston can be used.”

[JimmyB]

Sorry Tim I don't think Wiseco in the US have ever dealt with the 220SR, maybe try the UK or Australia, I have many sources in Japan for car/truck parts but have only imported a few bikes that were not available in North America and have always dealt with Impex or Webike for parts not sold here, the 3 links I posted are from a US Kawasaki site, the second is Impex out of Japan for my Canadian model(02 220R) and the last is also Impex out of Japan listing your 1995 220SR, all have the same part #s for pistons and rings for the 220R and 220SR, original part # for the OEM piston was 13001-1423 and is superseded by the new # 13001-0133 and rings are part # 13008-1159, the pistons appear to be the same for both bikes. Could you please post a link to the sites with the different part #s, just curious. I do have a new Wossner 220R piston for my bike here if you need any measurements to compare.

This is what the OEM set of 2 rings looked like for the 220R, the 3rd thin band(ring) was installed first in one of the ring grooves (I think it was the lower groove??) and then the ring installed over it, I believe this design slightly increased the outward pressure of the lower ring to the cylinder wall. I have seen a few Kawi bikes from the 70s-80s that had a similar OEM set up, but I don't recall seeing it in aftermarket piston/ring kits.

https://www.bing.com/images/search?view ... ajaxserp=0

I found this quote from user frame78 on this forum who I believe is no longer active, he said “ The best way to deal with piston problems is to change the con rod to a Kx version, then the normal Kx/ kdx piston can be used.”

I think that was for the KDX250SR.

I don't think the new piston part # is a upgraded part, I can't see Kawasaki finally doing a upgrade for this bike as it's been discontinued for 17 years. I have not heard of anyone going back to a OEM piston in the 220, always going aftermarket..

[JimmyB]

Kdxdazz(Darryl) has a good video on the 200 piston explaining some of the differences between OEM and aftermarket. Maybe PM him and ask if he might be able to find for sure if the 220R and 220SR pistons are the same as they have the SR too.

[Tokyotim]

Kdxdazz(Darryl) has a good video on the 200 piston explaining some of the differences between OEM and aftermarket. Maybe PM him and ask if he might be able to find for sure if the 220R and 220SR pistons are the same as they have the SR too.

Thanks!! I’ll try and ask him

[kdxdazz]

kdx220r and SR are the same piston and rings accoring to part number, i think its only early model kdx200 that the sr piston was different and im assuming thats just compression ratio
i'll be one of those rare guys that will be putting the stock kdx220 piston and rings back in, i have 2 kdx220sr's. as you may know from my videos i don't like forged pistons in hot jungles so opted for the cast piston but i meticulously deburred and chamfered the stock 220 piston and feel condifent i have solved at least 60 percent of the cracking issue

[Tokyotim]

kdx220r and SR are the same piston and rings accoring to part number, i think its only early model kdx200 that the sr piston was different and im assuming thats just compression ratio
i'll be one of those rare guys that will be putting the stock kdx220 piston and rings back in, i have 2 kdx220sr's. as you may know from my videos i don't like forged pistons in hot jungles so opted for the cast piston but i meticulously deburred and chamfered the stock 220 piston and feel condifent i have solved at least 60 percent of the cracking issue

Thanks for the reply and Info king. I will order a 220SR Wiseco piston kit and when I get it I will add some comparison photos on both for the forum so people can find it in the future

[Tokyotim]

kdx220r and SR are the same piston and rings accoring to part number, i think its only early model kdx200 that the sr piston was different and im assuming thats just compression ratio
i'll be one of those rare guys that will be putting the stock kdx220 piston and rings back in, i have 2 kdx220sr's. as you may know from my videos i don't like forged pistons in hot jungles so opted for the cast piston but i meticulously deburred and chamfered the stock 220 piston and feel condifent i have solved at least 60 percent of the cracking issue

https://www.wiseco.com/product/powerspo ... ton-kit-2/

I noticed on Wiseco website for the piston set (I selected 1998KDX220R in the dropdown even though mine is a 1995) the kit is missing the third smaller ring from your photo of part number 13008-1159, I’m guessing I would need to order that ring set to get that third smaller ring? The piston set from Wiseco is only showing the two large rings included. It also showed 70mm for the size but I’ve seen on other third part websites 69mm so I’m not sure which I need there

[kdxdazz]

you can't put OEM rings on the wiseco piston,you must order as a set

[Tokyotim]

you can't put OEM rings on the wiseco piston,you must order as a set

Ok got it thank you!

[JimmyB]

kdx220r and SR are the same piston and rings accoring to part number, i think its only early model kdx200 that the sr piston was different and im assuming thats just compression ratio
i'll be one of those rare guys that will be putting the stock kdx220 piston and rings back in, i have 2 kdx220sr's. as you may know from my videos i don't like forged pistons in hot jungles so opted for the cast piston but i meticulously deburred and chamfered the stock 220 piston and feel condifent i have solved at least 60 percent of the cracking issue

https://www.wiseco.com/product/powerspo ... ton-kit-2/

I noticed on Wiseco website for the piston set (I selected 1998KDX220R in the dropdown even though mine is a 1995) the kit is missing the third smaller ring from your photo of part number 13008-1159, I’m guessing I would need to order that ring set to get that third smaller ring? The piston set from Wiseco is only showing the two large rings included. It also showed 70mm for the size but I’ve seen on other third part websites 69mm so I’m not sure which I need there

Tim the little expander 3rd ring is only available for OEM piston/rings, don't worry about it with the Wiseco they do not use it, not in the Wossner kits also, stock bore is 69mm

https://www.wiseco.com/product/powerspo ... iston-kit/

https://wossnerpistons.com/products/8092

[Tokyotim]

kdx220r and SR are the same piston and rings accoring to part number, i think its only early model kdx200 that the sr piston was different and im assuming thats just compression ratio
i'll be one of those rare guys that will be putting the stock kdx220 piston and rings back in, i have 2 kdx220sr's. as you may know from my videos i don't like forged pistons in hot jungles so opted for the cast piston but i meticulously deburred and chamfered the stock 220 piston and feel condifent i have solved at least 60 percent of the cracking issue

https://www.wiseco.com/product/powerspo ... ton-kit-2/

I noticed on Wiseco website for the piston set (I selected 1998KDX220R in the dropdown even though mine is a 1995) the kit is missing the third smaller ring from your photo of part number 13008-1159, I’m guessing I would need to order that ring set to get that third smaller ring? The piston set from Wiseco is only showing the two large rings included. It also showed 70mm for the size but I’ve seen on other third part websites 69mm so I’m not sure which I need there

Tim the little expander 3rd ring is only available for OEM piston/rings, don't worry about it with the Wiseco they do not use it, not in the Wossner kits also, stock bore is 69mm

https://www.wiseco.com/product/powerspo ... iston-kit/

https://wossnerpistons.com/products/8092

Thanks you absolute legend

[Tokyotim]

you can't put OEM rings on the wiseco piston,you must order as a set

Can I bother you about one more thing, as far as pipes go it looks like from reading here the SR pipe attached differently than the US model, so pro circuit pipes, FMF pipes, you have to do some Frankenstein weld job cutting off the tip hold the old original pipe, and welding it on the new pipe because one bolts on and one uses springs or whatever? Are there any aftermarket pipes from any brand that will just bolt right up to the SR model?

[JimmyB]

you can't put OEM rings on the wiseco piston,you must order as a set

Can I bother you about one more thing, as far as pipes go it looks like from reading here the SR pipe attached differently than the US model, so pro circuit pipes, FMF pipes, you have to do some Frankenstein weld job cutting off the tip hold the old original pipe, and welding it on the new pipe because one bolts on and one uses springs or whatever? Are there any aftermarket pipes from any brand that will just bolt right up to the SR model?

Tim I'm curious, the 220SR pipe is a bolt on set up and the 220R is spring retainer, on my stock 02 220R OEM cylinder it has the flange mounts from the factory machined and threaded at approx. the 10/4 o'clock position on the exhaust port for me what looks like it would accept a bolt on pipe and the usual spring mount ears at the 9/3 o'clock position as for the spring mount pipe.
My question is what does the flange look like on the SR pipe that attaches to the cylinder, is it a flat flange that butts up to the face of the cylinder or does it have a sleeve on the flange that goes into the exhaust port and what is the bore ID size and depth of the exhaust port? Is the ex. port approx. 40mm ID?
I have never seen the exhaust port on a SR cylinder and was wondering if it just the mounting set up that is different between the 2 pipes and the cylinder might be machined bore size to accept both pipes. I have seen some 220R cylinders with the spring mount ears used and the area for the flange mount never drilled or threaded just flat, but mine has both. The cylinders for both models have the same part #s 11005-1744 and maybe it was easier for Kawasaki towards the last years of the 220 just to machine one cylinder to apply to both models and having both mounting types??

Thank you..

[Tokyotim]

I will take some photos for you when I get the bike back, it is currently at the mechanic getting rust removed from the tank. Hoping it will be done this Saturday the 28th he said

[Tokyotim]

you can't put OEM rings on the wiseco piston,you must order as a set

Can I bother you about one more thing, as far as pipes go it looks like from reading here the SR pipe attached differently than the US model, so pro circuit pipes, FMF pipes, you have to do some Frankenstein weld job cutting off the tip hold the old original pipe, and welding it on the new pipe because one bolts on and one uses springs or whatever? Are there any aftermarket pipes from any brand that will just bolt right up to the SR model?

Tim I'm curious, the 220SR pipe is a bolt on set up and the 220R is spring retainer, on my stock 02 220R OEM cylinder it has the flange mounts from the factory machined and threaded at approx. the 10/4 o'clock position on the exhaust port for me what looks like it would accept a bolt on pipe and the usual spring mount ears at the 9/3 o'clock position as for the spring mount pipe.
My question is what does the flange look like on the SR pipe that attaches to the cylinder, is it a flat flange that butts up to the face of the cylinder or does it have a sleeve on the flange that goes into the exhaust port and what is the bore ID size and depth of the exhaust port? Is the ex. port approx. 40mm ID?
I have never seen the exhaust port on a SR cylinder and was wondering if it just the mounting set up that is different between the 2 pipes and the cylinder might be machined bore size to accept both pipes. I have seen some 220R cylinders with the spring mount ears used and the area for the flange mount never drilled or threaded just flat, but mine has both. The cylinders for both models have the same part #s 11005-1744 and maybe it was easier for Kawasaki towards the last years of the 220 just to machine one cylinder to apply to both models and having both mounting types??

Thank you..

A bit of good news after scouring the internet in English i found this bike for sale, and after inspecting the shop it seems this guy is an expert on old two strokes especially the KDX. I cannot speak Japanese but I will send him a message about the pipe and also having some work done, and maybe getting some parts ordered that are hard to find. He’s about 3 hours from me not ideal but not the worst. When I finally get the piston here I will have him do the swap. I’ve talked to several shops here local and they don’t want to work on old bikes
https://9107809908.amebaownd.com/posts/19957261/