The 010 is 1 3/8" wide and the 020 is 1.4" wide The 010 is used on the snopro race sleds, with a different spacer behind the spider in the primary clutch. The production trail sleds are now using the 020 belt.
Just a few years ago AC used the 010 and 011 belts in all of their sleds. Now they are the 020 and 021, excluding the 440 sno pro's. The 010 could be used as a spare, but the deflection will be too loose for optimum performance without making an adjustment with the secondary shims. lol
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