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53 Posts
I have added a 2mm shim and a purple spring to my 2003 grizzly 660 with 27" tires. It gave me my low end back. Mid range power seems to be lacking a little tho. If I were to put lighter weights in the primary, would that give more mid range? Would like to get the snappyness in mid range power. Any and all info would be greatly appreciated. Thanks all