I just picked up a C650 Sport. I wanted it for riding two up with the wife. Together it's a load, 350 pounds, plus whatever we carry under the seat. Riding around the dealership I thought the suspension was pretty good with both of us onboard. But after subsequent longer and more aggressive riding my wife says it is harsh. Plus here in California "sleeping policemen/road bumps" are everywhere now and the bike doesn't like those!
First off the stock shock has 6 preload settings, it is on #4 which is given for one up with a load in the manual. I will try #5 (recommended for two up) and #6 (stiffer) next time we ride. But I hate to give up plushness over small stuff.
Second would be to replace the spring, maybe a progressive rate spring would help increase plushness and avoid bottoming out.
Finally, I see a few threads here about replacing the shock. Pricey and maybe a bit "over the top" but it may come to that. It appears that the Sport and GT use different shocks.
First off the stock shock has 6 preload settings, it is on #4 which is given for one up with a load in the manual. I will try #5 (recommended for two up) and #6 (stiffer) next time we ride. But I hate to give up plushness over small stuff.
Second would be to replace the spring, maybe a progressive rate spring would help increase plushness and avoid bottoming out.
Finally, I see a few threads here about replacing the shock. Pricey and maybe a bit "over the top" but it may come to that. It appears that the Sport and GT use different shocks.