Rival OCT (Open Core Technology):~ Hollow, forged crank arm construction; 1-piece forged AL6066 alloy arm/spider design with drive-side spindle. GXP-Team bottom bracket with external bearing cups (supplied with 68mm English cups, 70mm Italian cups sold separately: CR6997). Hard anodized PowerGlide chainrings with ramps/pins, and alloy chainring bolts. 830g w/BB.
• Includes GXP bottom bracket (English threads)
• OCT construction is stronger and lighter than standard solid-core alloy cranks
• Black PowerGlide chainrings are competition proven with long-lasting finishes
• 110 BCD