Mike,
I've been really happy with 13/51T gearing on my 300. Works good for hare scrambles and enduros in the midwest. Moose front and an Ironman rear has given me good life. 50 hours and still going strong. I'm not too picky about chains, any good o-ring or x-ring seems to last about the same. DID, EK, RK are all pretty affordable. Sidewinders are overpriced and it is like buying a used car to get a price out of them.
Hawkeye
__________________
 "Conviction is a luxury of those on the sidelines."
'13 Beta 300RR - race bike
'02 GG300XC - "Billie Baroo"
'01 DR650
'02 GG 280 Pro
'06 YZ 250
'07 WR450
'00 TT125RL
'94 YZ200 - custom keeper
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