Chris King Boost Rear Hub - 12 x 148mm 6-Bolt XD Matte Black 28H V2 MFPN=PTS2-42-RAS } The new Power Arc

} The new Power Arc Expert expands on the success of our original Power saddle

5" Rim Material Alloy Tire Type Tubeless Ready Clincher Hub/Brake Compatibility 6-Bolt Disc

External 3 level high-speed compression adjustment

Derailleur Capacity 16 Double or Triple Double Drivetrain Speeds 12 Front Der/Shifter Compatibility Shimano Road Di2 Front Derailleur Cable Pull Electronic Front Derailleur Clamp Braze-on Front Derailleur Style Traditional Max Ring (teeth) 55

Color Black/Reflective Defined Color Black Designed for ebike Yes Flat Protection Tread ISO Diameter 406 / 20" BMX ISO Width (mm) 44 Labeled Size 20 x 1

Chris King Boost Rear Hub - 12 x 148mm 6-Bolt XD Matte Black 28H V2 MFPN=PTS2-42-RAS } The new Power ArcBoost rear hubs are designed as precision mountain tools. Featuring one piece solid axles to provide a stiff hub that will help your suspension perform better and drive every watt of power into the dirt. To thwart mud water and contaminants as you power through rough trails Boost hubs have heavy duty bearing seals and a threaded driveshell seal ring. Canted flanges for stronger wheel builds Patented RingDrive system with 72 simultaneously interfaced