Feature:1. High-performance 9-pawl 450 sound mountain bike hub for smooth and efficient performance.2. 32-hole front 2 rear 5 bearing 6-bolt disc brake hub for enhanced stability and control.3. Made from 7075 aluminum alloy for lightweight durability.4. Compatible with Shimano HG 8-12 speed and Sram NX SX 12 speed cassette for versatile use.5. Available in black, dazzling, and purple colors for a stylish touch.Specification:Experience the thrill of mountain biking with our high-performance 9-pawl 450 sound mountain bike hub. With a 32-hole front 2 rear 5 bearing 6-bolt disc brake hub, it ensures smooth and efficient performance. Made from 7075 aluminum alloy, it is lightweight yet sturdy. It is compatible with Shimano HG 8-12 speed and Sram NX SX 12 speed cassette.Features:High-performance 9-pawl 450 sound mountain bike hub for smooth and efficient performance.32-hole front 2 rear 5 bearing 6-bolt disc brake hub for enhanced stability and control.Made from 7075 aluminum alloy for lightweight durability.Compatible with Shimano HG 8-12 speed and Sram NX SX 12 speed cassette for versatile use.Available in black, dazzling, and purple colors for a stylish touch.Specifications: Material: 7075 Aluminum Alloy Color: Black, Dazzling, Purple (Optional) Compatibility: Shimano HG 8-12 speed, Sram NX SX 12 speed Cassette Hole Count: 32 Bearing: Front 2, Rear 5 Sound: 450 Front Hub Size: 100x9cm / 39.4x3.5in Rear Hub Size: 135x9cm / 53.1x3.5in Weight: Front 180g / 6.3oz, Rear 360g / 12.7oz, Total 540g / 19ozPackage list: 1 x Pair 9-Pawl 450 Sound Mountain Bike HubPackage List:1 x Pair 9-Pawl 450 Sound Mountain Bike Hub