If its a light rust color, I wouldnt worry about it. Try rubbing your finger on the crank to see if it rubs off on you hand, that would not be too good. Almost all the cranks I have for my LT have surface rust, it dosent rub off & dosent cause any problems....
Good Luck
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1985 LT250R Quadracer
Manufacture Date: 12-84
+8mm Hot Rod
FloTek Drag/Dune port w/ Head Mod
LA Sleeve
STD Weisco Piston
AAEN Pipe
1Dirracing Ported Reed Block w/ Secrets
Keihin 39mm PWK
Nology Pro Fire Coil & HotWires
7oz off FlyWheel
Barnette Kevilar Clutch Kit
UNI filter
+2 +1 Chrome Burgard A-Arms
+4 Chromoly Swingarm
WORKS Fronts w/ Rezzys
DuraBlue Rear Strut
Billet Twin Row Carrier
LSR Axcaliber +2 Axle & LSR Brake Hub
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