Rear End Spring
#31
I believe i put the 6.2 spring in mine.
pretty sure this will work. i got mine off ebay.
DSP SHOCK SPRING 6.2 kg/mm CRF250 CRF450 KX250F CR250 | eBay
DSP SHOCK SPRING 6.0 kg/mm YZ250 KX250F YZ250F YZ450F RM125 YZ125 | eBay
pretty sure this will work. i got mine off ebay.
DSP SHOCK SPRING 6.2 kg/mm CRF250 CRF450 KX250F CR250 | eBay
DSP SHOCK SPRING 6.0 kg/mm YZ250 KX250F YZ250F YZ450F RM125 YZ125 | eBay
Thanks!
#33
I also want to raise the bike an inch and will do the 300 dogbone to accomplish that. (going to do kx forks up front)
#34
If the guy would have listed the dimensions of the springs like the spring companies do, you'd be able to tell. There's a couple of ways to tell on spring compatibility. You can go to the Eibach site and download their fork and rear spring catalog. At the end of the whole catalog is a listing of all the series springs they make along with the dimensions of the springs. In the catalog under each listing for each year and model bike they show the series spring involved. Through some detective work you can tell if the size will fit another bike not listed. That Eibach catalog is fairly extensive. The '09 rear spring and fork springs are a different size than either the '06/'07 250S and the KLX300.
I will just about bet that none of those springs on that ebay site will fit the '09, but without dimensions to do some searching, you may never know.
I will just about bet that none of those springs on that ebay site will fit the '09, but without dimensions to do some searching, you may never know.
#37
revbilly, do you know what the length dimensions are on the '09 and later spring? It's in the shop manual, but I don't have that one. It's just the length of the spring that's different, as I'm sure the ID and OD dimensions are the same on all KLXs.
Edit: You also have to make sure they provide any shim collars that might be needed for the spring to properly match the top and/or bottom OEM hardware. Companies like Eibach and RT always send it with the spring from what I've experienced.
Last edited by TNC; 05-30-2012 at 11:21 PM.
#38
That makes sense to me.. Maybe I'll just fork the extra 30 dollars at a quality purpose built spring. Thats not a whole lot of money really.
#39
Revbillyg, how are you going to make the KX forks fit? Are you installing forks, triple clamps and make new wheel collars? Just wondering as I looked into it before sending off my suspension to Moto-Pro, but found that the KX forks were a couple millimeters larger in diameter at the mounting points.
My bike with the reworked suspension (for my weight and riding style) is a completely different ride. I am 225 and 6'3" and had about an inch and a half of preload (threads showing) on the rear shock/spring in order to have the rider sag in the suggested range. That's alot of stored energy!!1 Now with the proper rear spring for my weight the preload is at 13mm or so.
I have the stock fork springs and rear spring off of my 09 available if you need me to measure them and provide the data here.
My bike with the reworked suspension (for my weight and riding style) is a completely different ride. I am 225 and 6'3" and had about an inch and a half of preload (threads showing) on the rear shock/spring in order to have the rider sag in the suggested range. That's alot of stored energy!!1 Now with the proper rear spring for my weight the preload is at 13mm or so.
I have the stock fork springs and rear spring off of my 09 available if you need me to measure them and provide the data here.
#40
Revbillyg, how are you going to make the KX forks fit? Are you installing forks, triple clamps and make new wheel collars? Just wondering as I looked into it before sending off my suspension to Moto-Pro, but found that the KX forks were a couple millimeters larger in diameter at the mounting points.
My bike with the reworked suspension (for my weight and riding style) is a completely different ride. I am 225 and 6'3" and had about an inch and a half of preload (threads showing) on the rear shock/spring in order to have the rider sag in the suggested range. That's alot of stored energy!!1 Now with the proper rear spring for my weight the preload is at 13mm or so.
I have the stock fork springs and rear spring off of my 09 available if you need me to measure them and provide the data here.
My bike with the reworked suspension (for my weight and riding style) is a completely different ride. I am 225 and 6'3" and had about an inch and a half of preload (threads showing) on the rear shock/spring in order to have the rider sag in the suggested range. That's alot of stored energy!!1 Now with the proper rear spring for my weight the preload is at 13mm or so.
I have the stock fork springs and rear spring off of my 09 available if you need me to measure them and provide the data here.
Like you, I just modded the existing fork with a complete revalve and springs and have been extremely happy with it. Adjustable rebound would have been nice, but it was the compression circuit that absolutely sucked. It's apparent that you can dig around and find old KX forks without too much effort or money. Still, I'll bet the damping and springing will still very likely need modding to match the rider and the KLX for most of us. I hate to use that old adage of trying to make a silk purse out of a sow's ear, but maybe even a diehard gearhead can perform a decent level of overkill on modding the KLX...not that I'd know anything about that...LOL!