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CARACTÉRISTIQUES DU PRODUIT Die-cast aluminum crank arm Outer chainring in stamped and CNC-machined AL7075. Heat-treated chromoly inner chainring. Chromoly chainring bolts. Sizes: Length: 170mm, 172.5mm. BCD: 110 / 80 mm 50/34 9-speed Finish: Gloss black paint, printed graphics. Weight: 820 grams

• Upper bearing: 1.5", caged 7/32"x20 • Lower bearing: 1.5mm, caged 7/32"x20 • CNC-machined steel cups • Head tube outer diameter: 55mm • 20mm insertion into head tube • Height: 28.6mm

• Upper bearing: ACB 36°/36° (black) • Lower bearing: sealed industrial type • Upper cup in forged alloy and lower cup in CrMo • Stack height: 31.4 mm

FSa

FSA, 50T, 10/11-speed, BCD: 110mm, 5-Bolt, Super Road, Outer Chainring, for Double, Aluminum, Black, 371-0250A