If they are YZ250FX forks, I'd imagine they'll be off-road valving, not motocross valving, like the RMX250, CRF250X, and Yamaha's own 2-stroke YZ250X woods version of the YZ250 motocrosser.
If just plain YZ250 or YZ250F forks (motocross models), you can ride them on smoother off-road trails, but the ride quality will be significantly lacking compared to even stock KDX forks, unless you are riding warp speed with the class or a class racer skills to wear stiff suspension like that is needed to float through thin air in between the bumps. Take note that generally only young teenage & 20-something racers and aggressive trail riders in their 20's will be able to enjoy that kind of ride quality harshness for any duration.
YZ250F forks onto KDX
- Chuck78
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Re: YZ250F forks onto KDX
'97 KDX220R - purple/green! - KLX forks, Lectron, Tubliss
'97 KX125 hybrid build! - KDX220 engine, '25 KX450X suspension, titanium hardware, lots of mods purple/green!
'99 KDX220R project - '98/'01 RM125 suspension, Titanium hardware, Lectron Billetron, Tubliss
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'97 KX125 hybrid build! - KDX220 engine, '25 KX450X suspension, titanium hardware, lots of mods purple/green!
'99 KDX220R project - '98/'01 RM125 suspension, Titanium hardware, Lectron Billetron, Tubliss
'77 Suzuki PE250 & '83 PE175 Full Floater - restomod builds
'77 Suzuki GS750-844cc, '77 GS400 & '77 GS550 big bore builds
'62 GMC 1000 Panel Truck
'88 Suzuki Samurai TDI/Toyota swap
'88 Toyota 4x4 pickup
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jaunt
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Re: YZ250F forks onto KDX
Thanks for the info, I'll have to see if I can find out which YZ (or possibly WR) they're off of.Chuck78 wrote: 09:29 am Oct 13 2023 If they are YZ250FX forks, I'd imagine they'll be off-road valving, not motocross valving, like the RMX250, CRF250X, and Yamaha's own 2-stroke YZ250X woods version of the YZ250 motocrosser.
If just plain YZ250 or YZ250F forks (motocross models), you can ride them on smoother off-road trails, but the ride quality will be significantly lacking compared to even stock KDX forks, unless you are riding warp speed with the class or a class racer skills to wear stiff suspension like that is needed to float through thin air in between the bumps. Take note that generally only young teenage & 20-something racers and aggressive trail riders in their 20's will be able to enjoy that kind of ride quality harshness for any duration.

