I'm looking into replacing the fork springs on my '80 GS450L with something more heavy duty. I'm rather tall and large, and don't know how the stock springs would do. The bike is hardtailed currently, so I'll be replacing the rear shocks sometime soon as well. Is there a good aftermarket option for these front forks? I looked at sonic springs and I saw they had springs for the GS550 and GS500, but nothing smaller than that. Would the 500 springs be compatible without any sort of modification? Also, does somebody have a measurement for the rear shocks on the 450? Since mine is hardtailed its hard to tell where the swingarm originally sat, or if it would need changed to accommodate my size.
I'm interested to find this out also.I want to improve the suspension on my 81' GS450T