Join Date: Jan 2003
Bikes: Bianchi 928, Bianchi Pista Concept 2004, Surly Steamroller, 1998 Schwinn Factory Team Homegrown, 1999 Schwinn Homegrown Factory, 2000 Schwinn Panther, Niner EMD9
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From Shimano's site:
LX crank weight: 665 g. Steel inner ring, alu outer and middle rings.
XT cranks: 647 g. Same ring construction. XT gets a different alu alloy for the arms themselves and an alu crank bolt, as opposed to steel.
'02 XTR (the more common 4 arm): 685 g. Alu crank nut as well. Big difference here is stiffness and quality of rings, which are all alu. XTR requires a different bb than LX and XT.
'03 XTR (ridiculously good looking in person): 797 g with bb. The bottom bracket and crankset are now integrated. It's a really trick setup and preliminary word from the people our shop has riding it has been very positive. XTR is now compact drive, like LX and XT. Basically, as you go up in price you lose some weight, gain some stiffness, and get nicer shifting rings.