Rotor BCD 76x4 Boost MTB Spider Rotor wanted riders to experience their awesome Q-Ring chainrings regardless of their crank setup. So even if you don't have a pair of Rotor cranks, you can still appreciate the benefits of running a Q-Ring. This 76mm 4-bolt spider comes in a variety of versions to fit a range of cranksets. It's light and stiff, making it almost a no-brainer for riders looking to reap the benefits of a Q-Ring. Features Weight 35g BCD 76mm (4-bolt) Material CNC machined 7075 Aluminum | Rotor | Rex Boost Spider Boost (No Hardware)
