It has higher strength, durability and has extreme resistance to abrasion.
The strong antioxidation makes it hard to rust to have a long service life.
Unique design of the gear sprocket exclusively for mountain bike, you can control the shift function well.
Hollow design, can dissipate heat more effectively, and the weight is reduced to some extent.
A fine appearance and will give you a luxurious feel.
Gear ratio: 9-speed, 11-13-15-17-19-21-24-28-32T
Item size: 130 * 42mm / 5.1 * 1.7in
Item weight: 250g / 8.8ounce
Package size: 150 * 60 * 50mm / 5.9 * 2.4 * 2.0in
Package weight: 333g / 11.7ounce
1 * Flywheel