CDN Duke
Member
I need to lower the front end of our Duke 390 more than what I can achieve by raising the fork tube in triple clamp (~17mm) - in order to balance out geometry change from lowering rear ~45mm with T-Rex Racing's lowering link kit. http://www.ktmduke390forum.com/forum/appearance-modifications/33449-t-rex-racing-45mm-lowering-kit-review.html
I am contemplating buying the KTM 90212955044 lowering kit for just the springs but if I can achieve the lower ride height through internal modifications without those springs, I'd like to try that if possible. The parts listing I have for the Duke doesn't show fork internals or part numbers for the spring etc. Does anyone know how the two fork setups differ? The Duke has 150mm travel to RC390s 125mm - presumably the springs are different? The Duke 390 lowering kit lowers by 25mm - are they just putting in a spring similar to the RC390 spring by chance? albeit not a progressively wound one as the photos would suggest?
I borrowed the pic of the RC390 fork internals below from gbabyracing's thread on adding preload:
"This shows the fork cap removed from the damper rod. The first black ring between the cartridge and the spring is the 5mm spacer.
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