Hollow Road Bike 11/12/13 Speed Cassettes Mountain Bikes Flywheel Tower Wheel Bicycles Cassettes Flywheel Cycling Part

Features: Providing a gear ratio ranges from 11T to a maximums of 52T, greatly expand the gear selection.
The chain guide grooves designs make the shifting more sensitive, and realizes easy, fast and smooth shifting.
Make of aluminum alloys, light weight and Enduring.
It features a hollows designs, improving drainage, mud dispersion, and heat dissipation.
Suitable for a wide ranges of bikes, including road bikes, mountain bikes, and Road bikes.

Specifications: Component: Aluminum Alloys
Type: 40T-11 speed/40T-12 speed/40T-13 speed/42T-11 speed/42T-12 speed/42T-13 speed/46T-11 speed/46T-12 speed/46T-13 speed/48T-11 speed/48T-12 speed/50T-11 speed/50T-12 speed/50T-13 speed/52T-11 speed/52T-12 speed/52T-13 speed/39T-12 speed/45T-12 speed/45T-13 speed/36T-13 speed
Size: As Shown in the Picture

Package Includes: 1pc Road Bike cassettes

note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.