XM490pro is 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 ofXM490.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 (front+rear)

                  Axle: AL7075 (front)+30 CR-MO (rear)

                  Endcap: AL7075 (front+rear)

                  Cassette body: AL7075 (rear)

>Spoke holes: 28/32/36

>Gauge: 14

>Sealed bearings: front 2+rear 4 pcs

>Axle&Built-in size:  front: 5x100 QR/15x100mm Thru

                                    rear: 5x135 QR/12x142mm Thru

>Brake interface: Disc IS (6-bolt)

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

>Weight: front 170g / rear 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 = front 5x100/rear 5x135mm = front 9x100/rear 10x135mm QR

TA = through axle version = THR = front 15x100/rear 12x142mm

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

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).