Shimano dura-ace track fc-7710 octalink crank

Product Description The Dura-Ace Track FC-7710 Crank by Shimano - A tyre width ahead on the track The Shimano Dura-Ace Track FC-7710 crank is designed for track cycling. It has a track bike-typical bolt circle diameter of 144 mm (5-arm) and can only be equipped with individual chainrings, which must be ordered separately. It is an Octalink crank with 8-speed teeth, which provides more stiffness compared to square systems. To save weight, the aluminium crank arms were hollow forged. With the FC-7710, you gain those fractions of a second that all too often make the difference between victory and defeat in the velodrome. Specifications:Application:TrackCompatibility:1xChainring Mount:144 mm bolt circle diameter, 5-armTechnical Information:Series:Dura-Ace 7700Crank Arm Material:AluminiumCrank Arm Length:165.0 mm, 167.5 mm, 170.0 mm, 172.5 mm, 175.0 mmChainline:42.5 mmQ-Factor:136.3 mmCompatible BSA Shell Width:68 mmRecommended Bottom Bracket:BB-7710 or BB-7700 Octalink 109.5 mm axle (not included)Compatibility:compatible with 1/2" x1/8" and 1/2" x3/32" chainschainrings with 45 to 55 teeth (1/2" x1/8" , 1/2" x3/32" ) sold separatelyFeatures:pedal thread BC 9/16" x 20 tpihollow crank arms (Hollowtech)anodised crank armsstainless steel chainring boltsTechnology:Octalink In Shimano's Octalink system, the bottom bracket and crank are connected by an 8-tooth contact surface. This provides greater rigidity and greater load capacity, especially compared to conventional square systems. Manufacturer Numbers:165.0 mm:I-FC7710A167.5 mm:I-FC7710B170.0 mm:I-FC7710C172.5 mm:I-FC7710D175.0 mm:I-FC7710EContents:1 x Shimano Dura-Ace FC-7710 Crank2 x crank bolts5 x chainring bolts5 x chainring bolt nuts Weight: silver | 170,0 mm | without chainring: 82 g (mit 46Z 1/2"x1/8", nicht im Lieferumfang) Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com