I have a 97 440xcf that I want to put a 136 1.25 on it for my 8yr old does really good on it just needs more track. I have a 99 rmk 136 suspension and the track just wondering about clutch and gear suggestions? How low on the gearing can I go and still have the sled go 50-60 mph down the trail? Use stock 34 helix or something else has gold spring in primary and sliver in the secondary now. Mostly ride 8-10,000
