Originally Posted by RichPugh

XD Details:
Cold Forged crank arms
578 grams
110 bolt circle
Will accept a second chainring for use as a compact road double
Use with a 103mm square taper bottombracket

RD Details:
Forged - 6061 aluminum arms
Comes with 1/8" standard chainring. Also available w/o chainring.
130mm BCD
Use with a 103 mm square taper bottombracket for a 45mm Chainline

RD Messenger (RD2) Details:
Forged - 6061 aluminum arms
Comes with 1/8" Messenger chainring. Also available w/o chainring.
130mm BCD
Use with a 103mm square taper bottombracket for a 45mm chainline


RD/RD2/Messenger w/o Chainring (same cranks):
75 Details:
NJS
144bcd
Includes chainring bolts
Cold-Forged Aluminum Alloy for strength
Use with a 109-110mm bottombracket. Made in Japan.

75 Grand Mighty Details:
Ultra stiff Sugino Super Duralumin Alloy. NJS.
Spindle Interface Type: Square Taper JIS
Spindle Length: 109 mm
144 mm BCD
Crank/FD Type: Single Ring
Chain Compatibility: 1/2" x 1/8"
Pedal Spindle Thread: 9/16"
Made in Japan