FSA (Full Speed Ahead) Gossamer Tandem Rear Crankset - 170mm, 10-Speed, 52/39/30t, 130/74 BCD, FSA MegaExo Spindle Interface, Black 29" Mountain Wheels Progressive Springs utilize a non-linear

Progressive Springs utilize a non-linear design

Manufacturer Part Number: 9458

Manufacturer Part Number: BO-5X12-UL-BLK-4

UPC: 810415010125

Color: Gloss Blue

FSA (Full Speed Ahead) Gossamer Tandem Rear Crankset - 170mm, 10-Speed, 52/39/30t, 130/74 BCD, FSA MegaExo Spindle Interface, Black 29" Mountain Wheels Progressive Springs utilize a non-linearThe FSA Gossamer Tandem Crank Bottom Brackets sets feature cold forged AL6061 T6 aluminum crankarms with a MegaExo spindle. Shimano and SRAM 10 Speed compatible 2 Bottom bracket spacers allow for adjustable chainline 35. 0mm Tandem specific braze on front derailleur clamp included with rear cranks Cold forged AL6061 T6 aluminum crankarms Monocoque crankarm and spider 165mm Q Factor 7900 and Campagnolo 11 Speed compatible chainrings sold separately