[swazi_matt]

i think racetech has a spring calculator for weight, it will probably be for kyb on yamaha so you may have to make adjustments based on what rate they have for oem and compare it to gg oem spring rate, then just go up by the same ammount as you would on yamaha

but at 102kg you are about 30kg over the "average" rider so definitley need to go up. I really don't understand why dealers dont insist on selling riders the correct spring when they buy the bike. Its like selling someone golf clubs that are too short. riders go out and complain about the bike not handling well