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HCS Snowmobile Forums > Snowmobile Forums > Polaris General Discussion > Fusion/IQ chassis
pro116
Anyone know what the 07 121's 600cfi's had for gearing?
How about the 08 dragon 600's?
racerdave
121 600CFI = 23-39

Dragon 6 probably the same
Caddisfly
For what it's worth ...

The 23-39 set-up is supposed to be good for 103 mph at roughly 8,000 RPM ... but my 2003 Pro-X 600 was getting 106 (GPS) last winter in long runs on a local river.
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