Product Description:
Stiff I Beam Crank Arm Available in 175mm or 170mm 44-32-22 All Aluminum Rings w/Aluminum Chainring Bolts 104mm/64mm Bolt Circle Diameter Patented Super Fluid Drive Shifting Ramps ISIS Splined Weight - 640 grams
Product Description:
Stiff Aluminum I Beam Crank Arm or Standard A Crank Available in 175mm, 170mm, 165mm, or 162.5mm 42-34-24 All Stainless Steel Non Replaceable Chainrings Optional Chainguard Patented Fluid Drive Plus Shifting Ramps Square Taper Weight - FCM52 920 grams FCM51 840 grams