I just went through this with my 421 cub.First I tried 20-10-10 extremes but found that I
would spin like crazy out of the hole and on hills with 14/41 gearing
Then I was told to try 22-8 12 paddle. Hook up was great but my gearing was wrong
so I installed 14/46 a full 5 teeth in the rear. My bike is insanely fast , Great on hills
And killer in the dunes. It feels about like stock gearing