STM Clutch Solves F4 Abrupt Clutch Engagement -
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post #1 of 1 (permalink) Old 04-02-2019, 04:39 PM Thread Starter
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Location: Mission Viejo, CA
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STM Clutch Solves F4 Abrupt Clutch Engagement

The STM slipper clutch makes the F4 clutch a joy to operate. The stock clutch engages too abruptly, resulting in a bucking bronko ride away from some stop lights. I installed a 30mm CNC clutch slave to give a bit more travel, but it didn't help much. Then I had the STM slipper clutch installed and the clutch is as easy to engage and modulate as any bike I've owned. The STM clutch engagement is as good as my previous 2012 ZX10R and 2016 Ducati 1299, and present 2015 R1.
The STM part number is FMV-S020 and it fits our 2010+ F4's. It's $1000 from Hard Racing (best price I've found).
I really am ecstatic about the new clutch, because I used to dread city riding with the stock clutch.
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