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FJR Motorcycle Forums
FJR Parts & Accessories Discussions
Gen III Non-ES fork upgrade?
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<blockquote data-quote="MCRIDER007" data-source="post: 1271158" data-attributes="member: 329"><p>According to the FSMs, GEN2 fork springs are .86kg and GEN3 fork springs are 1.02kg so unless you are experiencing excessive sag or nose dive under braking there shouldn't be any reason to change the springs. To compare spring rates, GP Suspension recommends 1.0kg springs and Traxxion seems to normally go with 1.1kg springs.</p><p></p><p>Fork oil is easy, use 5wt oil or 85/150 suspension fluid. Honda's SS7 is also a very good 5wt fork oil and you can buy it for about $6 a pint (takes 3 pints).</p><p></p><p>At 12K miles you shouldn't need new seals or bushings. If you do change them, stick to Yamaha parts.</p><p></p><p>If you feel that heavier springs would be an improvement you probably should experiment with using more damping before you change springs. Do the rebound damping first since changing the rebound damping will also have a lesser impact (in the same direction) on the compression damping.</p></blockquote><p></p>
[QUOTE="MCRIDER007, post: 1271158, member: 329"] According to the FSMs, GEN2 fork springs are .86kg and GEN3 fork springs are 1.02kg so unless you are experiencing excessive sag or nose dive under braking there shouldn't be any reason to change the springs. To compare spring rates, GP Suspension recommends 1.0kg springs and Traxxion seems to normally go with 1.1kg springs. Fork oil is easy, use 5wt oil or 85/150 suspension fluid. Honda's SS7 is also a very good 5wt fork oil and you can buy it for about $6 a pint (takes 3 pints). At 12K miles you shouldn't need new seals or bushings. If you do change them, stick to Yamaha parts. If you feel that heavier springs would be an improvement you probably should experiment with using more damping before you change springs. Do the rebound damping first since changing the rebound damping will also have a lesser impact (in the same direction) on the compression damping. [/QUOTE]
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FJR Motorcycle Forums
FJR Parts & Accessories Discussions
Gen III Non-ES fork upgrade?
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