Factory Pro's Shift Spring kit - help prevent missed shifts and damage caused by missed shifts.
Feed back to
"How's it working? Aug 2012
Yes, works great! It's a must have item. 5th gear used to only last me about a month due to missed shifts, now I'm going on 3 months since my last rebuild.
Sault Sainte Marie, MI
Microbearing shift detent arm and F-Pro shift spring
yz250f / yz450f 14-15 only
replaces 1SL arm and 90508-26080 stock spring
F-Pro Shift Kit
The arm and spring kit.
The Pro Shift kit Microbearing Detent Arm and F-Pro Shift Spring will upgrade your bike.
Perfect for when you are tired of paying attention to shifting and just want it to shift right. MX. SM, Desert, trail -
Virtually eliminate missed shifts - Shifts 3ms to 5ms quickerMake shifting quicker and help eliminate missed shifts. Helps address missed shifts caused by weak spring.
Helps prevent shift fork and gear engagement dog damage caused by missed shifts.
Installation: Slightly more complicated than replacing the clutch basket.
No case splitting required.
Installation Instructions - click here
Yamaha Shift Star kit worked awesome! Not one missed shift all weekend. Easier to find neutral, too - Which is good because I have to put it in neutral to start it for some reason. Doesn't like to start with the clutch in. With the close ratio tranny, I did a lot of shifting.
Leigh Thomas - Mojave area
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New and improved
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