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DannoXYZ · August 19th, 2019, 02:21 PM

I have K-tech fork-springs and Razor-R rear shock on my race bike. I change fork-oil in winter between seasons (about 50 days @ track per year). I could probably go 2 seasons per change as the rate of decay is not very quick.

Factory fork-oil is 15w and rebound-holes in damping rod is designed for that. If you have stiffer springs than stock, heavier oil should used. Especially if you use more oil volume (less air) than stock as this adds to "springiness". I use 0.85k springs and settled on 17.5w oil.

August 19th, 2019, 02:21 PM	#5
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	I have K-tech fork-springs and Razor-R rear shock on my race bike. I change fork-oil in winter between seasons (about 50 days @ track per year). I could probably go 2 seasons per change as the rate of decay is not very quick. Factory fork-oil is 15w and rebound-holes in damping rod is designed for that. If you have stiffer springs than stock, heavier oil should used. Especially if you use more oil volume (less air) than stock as this adds to "springiness". I use 0.85k springs and settled on 17.5w oil.