XM490prois evolved from XM490. It is adapted to advanced riders who like more intense riding. Its rear hub axle is changed from AL7075 to 30crmo steel, which improves the overall strength, but through structural optimization, it still maintains the same weight of XM490.alsosupply multi-specification: 32holes, front hub 5x100/15x100mm, rear hub 5x135/12x142mm with HG/XD/MS cassette body with tool-free conversion, and up to 8 colors,so rich colorful to meet the individual needs of most rider.

> Material: Body: AL6061

                   Axle: 30 CR-MO

                   Endcap: AL7075

                  Cassette body: AL7075

> Spoke holes: 28/32/36

> Gauge: 14

> Sealed bearings:4 pcs

> Axle&Built-in size:rear: 5x135 QR/12x142mm Thru

> Brake interface: Disc IS (6-bolt)

> Cassette body: 6 pawls/72 HD,HG/XD/MS, 8-12S

> Weight: 320g

> Colour: black/oil slick/blue/ green/orange/grey/purple/red/pink

> Warranty period: 2 years

Important note:for the explanation of common abbreviations, please check the specifications you need before buying. If you are not sure how to choose, please consult our professional salespersons, and we will give you accurate suggestions. We are not responsible for the losses caused by your own purchase mistakes.

28H/32H/36H = the hub has 28 spoke holes/32 spoke holes/36 spoke holes, can fit your 28/32/36 holes rim.

QR = quick release version = rear 5x135mm = rear 10x135mm QR

TA = through axle version = THRU= rear 12x142mm

mini THRU = mini TA = rear 10x135mm THRU or 12x135 THRU

HG/XD/MS = the hub's cassette body is compatible with Shimano MTB 8-11 speed cassette and Sram PG series 8-12 speed cassette(HG) / Sram MTB XG series cassette 11&12 speed(XD) / Shimano MTB micro spline 12 speed cassette(MS).