Ritchey WCS Zeta GX Disc 650b Wheelset (N3W) Black - Model=Polylube 1000 Grease Front/Rear RR Cassette Body/Freehub 8-10s

Front/Rear RR Cassette Body/Freehub 8-10s Cass Hole Count 36H Spacing/Axle QR Material Aly Color Blk Weight Brake Type RIM Spacing 135 PCD-L 45 PCD-R 45 LTF-L 29 LTF-R 48 CTF-L 38

A US-based bicycle testing lab put the XP4 through the rigorous ISO 4210 standard testing process

Di2 EW-SD300 wire for 12-speed)

TFT LCD Display - A custom color TFT display featuring a detachable mount and a USB-C port provides trip

Laser etched sizing scale provides quick reference of jaw position

Ritchey WCS Zeta GX Disc 650b Wheelset (N3W) Black - Model=Polylube 1000 Grease Front/Rear RR Cassette Body/Freehub 8-10sHand built wheels are tubeless ready and feature the new WCS hub with sealed bearings, and center lock rotor mounts Rear hub houses a precise Ratchet Driver system with 360 degree, 36 point engagement The rims offer a wide diameter to fit wider tires for gravel, and they're laced with 28 sturdy spokes Model WCS Zeta GX Size 650b Front Rear Front Rear (Campy N3W) Axle Spacing (mm) 12x100 12x142 Hub WCS Hole 28 Brake 6 Bolt Rim OCR Offset Internal W