125-200cc I Rode The Prototype Wr200 And It Is Amazing...

I would like too find someone who is about to send off their 144 cylnder to trade me for a low hour 125 cylnder,09 bike was purchased new in April of 2011 as a leftover.It would save me a lot of money and down time,I ride slow technical stuff here in NE and a 125 does just fine,but a 144 would be nice too,just a thought
Dave

Will this 165 conversion work on a 2004 CR125?

why yes it will ! it works great on my 04

All sounds good to me. Need to hear more on extensive testing and all about reliability-vibration issues and cost of rings and piston etc.... I do have a brand new 125 cylinder laying around. If not done by the factory I'm a little skeptical about it. I need to see more results and testing. If it does work well and can stand up to a borderline AA guy I would like to give it a try!!! (If the kit is reasonable) How about dyno results on the 125 144 and 165. I wish Husky would just quit the crap and make a 200 for all of us ! If a little company like Gas Gas can do american spec 200's (I was told they only make em for the US) Then I'm sure BMW financed Husqvarna can do the same thing. BMW wake up and realize the 2 stroke market is far from dead !

[quoYour buddy on the 125 may not be as good a rider as you are. Hec I can make it up hills on a 125 that some guys on a 300 can't. Just sounds like a ok running small bore to me. I will await more testing and reliability reports. Again IF this thing works it will be nice. I like the fact it is a 165 !! I suppose it is impossible to really make the engine any bigger using the stock cylinder!. Well a longer stroke and a spacer??????? Just dreaming !!te="Motosportz, post: 196861"]This looks like an EZ hill as the vids always take away the steepness but it is a pretty good hill. You slide down it in a semi controlled fasion and going up can be interesting. Buddy on the 125 already tried and failed. This is my first try and marched right up it. Hear how throaty the bikes is and how it just jumps. Made the hill EZ.

http://motosportz.smugmug.com/Motorcycles/WR165-at-HR/20709664_MD2kfJ/#1643173613_XWHDcM4-A-LB[/quote]

It certainly isn't factory. There will be quite a few guys out there who will be riding the kit. So your questions will be answered at some point and I think you will get a chance to ride one for yourself eventually. I can't imagine the vibrations being an issue but then I don't have your wrists/hands. As far as if it works, I can assure you that it does but it may not last 3 years of constant WFO racing on one piston kit. I expect that Kelly will be putting the kit through quite a few hours of torture. I put 10 hours of WFO riding on that topend before I sent it to Kelly. Kelly's top end was my first attempt at welding up the new cylinder and we are trying to break it if possible. My old style top end after 25 hours looked pristine and had lost 1 to 0 psi of compression in that time(195 to 194). I have done a dyno run with the heavier/wider ring Mahle piston kit and the 125 FMF pipe. It has significantly more Torque and HP than the 144 up until 10K. Our problem was that we couldn't keep the rear hooked up on the dyno with the 165 when the power valves openend(had it tied down pretty tight). No such problems with the 144 and certainly not the 125. My butt dyno tells me that with the 200 SX pipe all those numbers have been increased with the 165 and the lighter/less frictioned piston kit. If I had a spare cylinder sitting around I would think it would be worth your time to try it, but I am biased. Piston kits and rings will be priced fairly in line with oem parts and a little more than aftermarket wiseco type. We just aren't going to order enough of these at a time to get the price down much further.

Future kits using the newer cylinder will take advantage of a couple of things we learned doing the first one and be quite a bit stronger. I still don't expect Kelly to be able to break it even though it is weaker. JMO so take it with a grain of salt.

All this AA bs in every post is funny . There are lots of 165 kits with lots of hours on them ,never heard of a problem . I have one with at least 40 hours on it , no issues at all . Comp still with in a few psi of new .

Understood, but I will assure you that a fast A rider is alot harder on and engine then and ok B rider. Just one way of referencing. OK , I will change the wording- How about reliability for a guy who rides even a 250 like a 125, a guy who likes to rev his bike to the moon and even in slippery conditions when he should be a gear high and lower in the RPM rides a gear lower and out of control and hard on the pipe, how about a guy who's wife can tell it's him coming out of the woods just by the sound of his engine coming, how about a guy who just likes to hold things WFO because he knows it's a Husky and not and orange POS. Ok, wait a minute, how bout a fast A rider (That was easier!) Sounds like the potential for and awesome kit!!! I want to find out more about it. If it makes more power everywhere then the 144 then Holy Cow batman who needs a Gas Gas!!! Sounds like yours has proven bullet proof. I need to find out what it costs to get it done. Still use the same powervalve setup?

When you say the newer cylinder, What do you mean? How bout with the CR ignition? I like the sounds of this badboy!

The cylinder Husky went to with the 08 CR125. It has one less bridge in the transfers so it has 5 instead of 7. All the small bore Huskies since then use this cylinder. Several small changes made boring these more difficult than the older cylinders. Chief among those is that the rear transfer is slightly inlet into the rear of the sleeve. This has to be welded up so it doesn't create a weak area of the cylinder. Takes quite a bit more time to use these cylinders and hence they cost a bit more to use in the kit. I can tell you that rev'ing this motor to the nuts isn't the fastest way to go. You will be much faster gearing up, shifting, and riding the significant mid-range to top of this motor. Of course you won't have to shift it and make sure you are in the right gear like the 125 and even the 144. As I have said it pulls way harder from 5K to 10.5K than the 144 does from 8K to 12K. I use the CR ignition and at near sea level you need to be careful wicking it in the lower gears at any rpm.

At this time there are 3 kits in the hands of non-biased CH guys. Dfeckle, Norman Foley, and Troffer88 all have the kits in their hands and will be mounting them up in the near future I believe. Now all three of those are using the older cylinders. I have three more headed out shortly of which one is a newer 125 cylinder. So there will be a plethora of ride information to work from both WR and CR ignitions. Altered pipes and stock pipes. Have a couple of more cylinders being bored as we speak so you really should be able to get a real good feel for what to expect.

I don't know but I can't get over how much fun the 125 husky is to ride and futz with in all its forms. I am sure that Kelly and I will be working with others to try and create pipe combinations for all types of riders.

I hope the new cylinder works!

Can anyone let me know how much needs to be modified on the KTM 200 pipe in order for it to fit the WR? Any years in particular? Walt has my cylinder now for the 165 transformation. I currently have a FMF Fatty and a brand new stocker for my WR. I am probably going to try both of them first before looking into something else but if I run across one at a good price I might jump on it. I really hate how my FMF touches the coolant hose. I also have the JD CR125 ignition. Mainly because I like the idea of having the versatility of switching maps. Im going to have a lot of tuning and testing to do. Have Walts PV kit still new in a box. Cant wait to try this 165 kit!

Run a 2nd hose ziptied to the radiator hose
for extra protection,I,ll probably go the 165 route aswell.
Dave

If you can find a used FMF Fatty for an 03-04 Ktm 200 sx, jump on it. I know that pipe works. If you like a big bottom end/mid then find a stock 200 ktm pipe from 06 on. They fit great and all you need to change is the inlet spigot and the stinger. The Fatty hangs a bit low, but I extended the head pipe at the spigot ~1" so you could gain that back easily. We are doing pipe comparison's now so we will know more in a while.

Kelly/Walt,
What piston are you using? Is it stock from another model? I would probably love the 165 so much I would keep it till I can't ride anymore. Just wondering about future piston availability.

Mike,

It is a custom, Forged piston. Availability is going to be easy as I will have spares you can purchase through Motosportz and if I die you will have a part # and can order straight from the Manufacturer. It will not be a standard stocked piston so the price will be more if you order that way but not exhorbitant as all the engineering and cad work has been done. You would absolutely love the 165.

Walt,

I was going to ask that, piston availability (and lets hope you don't die anytime soon and don't care because of moto junk!) in my note to you. That's good to hear.
Have my stocker ktm 200 pipe and I'm going to try my hand at moding it to fit. Should be fun.. maybe interesting is a better word. There's a long recent thread on tt in the proper section about the different pipes if anyone is interested.
Just took my cylinder off, heading to the PO to send it off...

Thanks

What does this cost? And who do I talk to? How about the blow up factor????????????