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Dirt Bike Mods & Maintenance
YZ450F fork spring preload adjustment washer size
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[QUOTE="mop, post: 638543, member: 40662"] Anssi: For your weight, I think that you must go up to the next rate front fork spring. I am not sure what the production standard spring is in Europe, but in USA, it is straight rate .46kg. I would recommend .47kg for you. There is a chance that European YZ's use progressive springs, but I am not sure. Straight rate and progressive original equipment KAYABA springs are available from Technical Touch in Belgium. They are the KAYABA importer for all of Europe. For your weight, you should go up on both front and rear spring rates. Also, be sure to specify "kg/mm" for your spring rates, because in recent times, Yamaha and Kayaba have started using "nm" ratings:newton meters, and they are different. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
YZ450F fork spring preload adjustment washer size
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