Hey saw this on Facebook a while back. Not sure if it ever got posted here...
But for the Grom SF, the OG Grom fork mod does not work. Someone on the Facebook group used this
Amazon.com: Hydraulic Fitting Metric M12x1 M12X1.0 Female to Male Gauge Adapter Steel : Automotive
You thread the male end into the fork cap. Thread the fork rod into the female end. This adds the "preload" or whatever you want to call it.
Facebook group is "Honda Grom Riders & Mods".
But for the Grom SF, the OG Grom fork mod does not work. Someone on the Facebook group used this
Amazon.com: Hydraulic Fitting Metric M12x1 M12X1.0 Female to Male Gauge Adapter Steel : Automotive
You thread the male end into the fork cap. Thread the fork rod into the female end. This adds the "preload" or whatever you want to call it.
Facebook group is "Honda Grom Riders & Mods".