What do you think of my KX fork conversion?
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rubbersidedown
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- Jan 16, 2005
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I'm three shades of green with envy.
A pair of 2002 KX forks just sold for $182.00 somewhere on the internet. :bang:
A pair of 2002 KX forks just sold for $182.00 somewhere on the internet. :bang:
KX Fork swap cost
I paid about $700 for my 2002 KX125 front end -- $500 for mint condition forks and $200 for a front wheel/axle, also mint. There are KX forks listed on that certain auction site all the time. If you hit the timing right, you can probably pay less than I did. There was another mint set of 2002 KX forks that also went for $500 at the time I bought mine. I think generally it's going to be cheaper to just add the KX forks, but it depends on the age of your bike and whether you want a new bike. I bought a 2002 KDX for my wife and it's turned into a project bike (see pics on my KX fork swap post below). Since she's never ridden before, there was hardly a good reason to spend the money on the KX forks, but I just wanted a winter project.
I paid about $700 for my 2002 KX125 front end -- $500 for mint condition forks and $200 for a front wheel/axle, also mint. There are KX forks listed on that certain auction site all the time. If you hit the timing right, you can probably pay less than I did. There was another mint set of 2002 KX forks that also went for $500 at the time I bought mine. I think generally it's going to be cheaper to just add the KX forks, but it depends on the age of your bike and whether you want a new bike. I bought a 2002 KDX for my wife and it's turned into a project bike (see pics on my KX fork swap post below). Since she's never ridden before, there was hardly a good reason to spend the money on the KX forks, but I just wanted a winter project.
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- #10
The KX forks are about an inch longer than stock. Thus to level out the bike I installed new Dunlop 942 tires which increased the height of the rear of the bike 0.4 inches (120/90 18, std for the front) and slid the forks 0.5 inches above the triple clamp. This bike handles unbelievable now. IMO this is the best suspension modification you can do to your bike. Riding whoops and everything else is so much easier and fun.
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- #11
apb said:
When I bought this bike ($1,000) it was 100% stock. It even had the original tires on it, not even half warn. Stripped the bike down to the frame, cleaned, painted, polished, replace all the fluids including suspension fluid, added aftermarket performance stuff, decals, tires, replace original piston, raise the port timing, increased the compression and added 39 PWK carb. Its definitely bigger than the KDX and about 15 pounds heavier. It is definitely not as agile as the KDX and feels heavier. However, it is powerful and feels stable at speed. I bought it for the desert. I still need to get the suspension tuned in better. Have to run race gas to prevent the pinging. Thus I may reduce the compression of the engine. Anyway this was my other project.
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Wow how often do you ride that thing?? The paint isnt even really worn off the frame above the foot pegs. That has been one of the first signs of ware on all of my past painted frame bikes. That thing is in great shape. That has got to be new plastic on there right?
...if you ever need a job valeting cars give me a call!
I have my own car sales and I'm not too happy with the quality of my valeters (detailers?) work...if things ever get real tight over there I can always find you a bucket and brush...... ;)
.....the KDX, RMX and the ER clean garage, there goes my weekend riding, I think I'm on bike and garage cleaning detail instead! :nod:
two peachy looking bikes :cool:
Richard
I have my own car sales and I'm not too happy with the quality of my valeters (detailers?) work...if things ever get real tight over there I can always find you a bucket and brush...... ;)
.....the KDX, RMX and the ER clean garage, there goes my weekend riding, I think I'm on bike and garage cleaning detail instead! :nod:
two peachy looking bikes :cool:
Richard
Impressive. Looks like the RMX just rolled off the showroom floor. Are you afraid to ride it hard now?;)
I'm surprised you're having detonation problems after going to the thinner head gasket. My RMX does fine on pump gas with the '89 RM gasket on there.. Probably caused by the timing change you made, I would think? Or a combo of the two together.. I haven't changed the timing on mine. Nice to see such a clean RMX -- it'd take some effort to get mine looking that good.
I'm surprised you're having detonation problems after going to the thinner head gasket. My RMX does fine on pump gas with the '89 RM gasket on there.. Probably caused by the timing change you made, I would think? Or a combo of the two together.. I haven't changed the timing on mine. Nice to see such a clean RMX -- it'd take some effort to get mine looking that good.
Green Hornet
Member
- Apr 2, 2005
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Looks Great. I have everything, Its just a matter of putting together now.
canyncarvr
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- Oct 14, 1999
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A BTW....some have found the OEM brakeline to be too soft on the long run of the OEM KX fork. A change to either a steel long-line, or a CR-style routing (high) will cure that problem.
...if it is a problem.
Good to hear your success. The KX fork is purty darn good, 'eh? Well...compared to I mean.
Good, too, that you took into account the length of the KX forks. I've seen some 'upgraded' KDXs that are going 'uphill' all the time with KX forks. ...not a good thing.
You need more vent tubes on your carby! Four would be good!! ;)
...if it is a problem.
Good to hear your success. The KX fork is purty darn good, 'eh? Well...compared to I mean.
Good, too, that you took into account the length of the KX forks. I've seen some 'upgraded' KDXs that are going 'uphill' all the time with KX forks. ...not a good thing.
You need more vent tubes on your carby! Four would be good!! ;)
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- #19
The pics are after I restored the bike and before I rode it. This is why it looks like it came off the show room floor. That was my goal, since CA you can't get a new 2 stroke with a green sticker. All the plastic is origianal. I used Renew on the fenders and polished it and the tank with SafeCut. Works really good.JST122 said:
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- Thread starter
- #23
apb said:
I used the Cometic gaskets Eric Gorr recommends in his book, which is a thicker cylinder gasket and thinner head gasket to advance the port timing and increase compression. It may be that I was running lean even though I richened the the setting with the main and needle over stock. However, I did not take into account the difference between a 39mm PWK with a #6 throttle slide and the OEM 38mm PJ with a #5 throttle slide. Thus, I have richened it up some more to see what that does. My KDX just bogs when it runs lean. But with a high compression engine I understand that it can ping instead.
