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Chris King ISO Rear Boost 148 X 12mm Thru Axle Micro Spline MTB Hub


The Chris King ISO Boost Rear Hub for 148x12 Thru Axle and Shimano Micro Spline driveshell is a precision mountain tool. .. Read more

Matte JetMatte Jet
32H - Standard Bearing32H - Standard Bearing
28H - Standard Bearing28H - Standard Bearing


The Chris King ISO Boost Rear Hub for 148x12 Thru Axle and Shimano Micro Spline driveshell is a precision mountain tool.

The mountain bike hub uses one-piece solid axles to provide a stiff hub that will allow your rear suspension to work better and drive every watt into the ground beneath you. The ISO B hubs have heavy duty seals and a threaded driveshell seal ring to prevent mud, water, and contaminants from hindering your ride.

The hub comes with either steel or ceramic bearings, which are made in-house by Chris King. The bearings have heat-treated, surgical steel races. The quality and speed of Chris King bearings sets the Portland, USA manufacturer apart from the competition. As Chris King bearing tracks burnish, they get faster with age. The hubs and bearings are fully serviceable for years of use.

The patented Chris King RingDrive with 72-points of engagement gets power to the ground fast and provides unmatched engagement.

The Shimano Micro Spline driveshell makes this mountain bike hub compatible with Shimano’s XTR, XT, and SLX mtb groupsets.

Key Features

  • King Lifetime warranty
  • Made in-house bearings
  • For 148x12mm thru axle
  • Shimano Micro Spline driveshelll
  • Easily serviceable and completely rebuildable
  • Patented RingDrive with 72 points of engagement
  • Engineered, manufactured and assembled in Portland, Oregon USA

Please note: images are for colour representation only and may not represent actual specification.

ABOUT Chris King

Since being founded in 1976, Chris King has become one of the most esteemed names in cycling thanks to the extraordinary quality, durability and performance of its components. Every product in the Chris King range is designed without compromise to offer the ultimate upgrade while the brand's complete commitment to responsible sourcing of materials and environmentally progressive manufacturing mean these precision components are built to last. Read more about Chris King.


Founded by real cycling enthusiasts in 2004, our passion for elite performance runs through everything we do at Saddleback. Our team of dedicated roadies, mountain bikers and triathletes practice what we preach to bring you the finest cycling products and a superior service to match. We're the official UK home of Castelli, Chris King, ENVE, HJC, Moots Cycles, PUSH, Sidi, Silca, Sportful, Stages, Troy Lee Designs and Wolf Tooth.


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