Chris King Hub, Rear, ISO, B, 32, Red, 148x12

Chris King ISO B Rear Hub 32H 148x12 Boost Red is a premium mountain bike rear hub engineered for riders who demand exceptional engagement, durability, and performance on the most demanding trails. Designed specifically for modern Boost 148x12mm mountain bike platforms, the ISO B hub combines legendary Chris King craftsmanship with advanced engineering to deliver precise power transfer, superior wheel strength, and unmatched reliability.

At the heart of the hub is Chris King's patented RingDrive system, featuring 72 simultaneously interfaced points of engagement. This innovative design delivers near-instant power transfer, exceptional responsiveness, and the iconic Chris King "angry bee" sound loved by mountain bikers worldwide.

The hub utilizes a one-piece solid axle for increased stiffness, helping improve suspension performance and ensuring efficient power delivery. Heavy-duty bearing seals and a threaded drive shell seal ring provide outstanding protection against mud, water, and trail contaminants, making it ideal for aggressive trail, enduro, and all-mountain riding.

Built with Chris King's renowned in-house bearings featuring heat-treated surgical-grade steel races, the ISO B hub becomes smoother and faster over time. Fully serviceable and rebuildable, this hub is engineered to provide years of dependable performance on the toughest terrain.

Key Features

• Hub Type: Rear mountain bike hub

• Axle Standard: Boost 148x12mm thru-axle

• Spoke Drilling: 32 Hole (32H)

• Engagement System: Patented Chris King RingDrive technology

• Engagement Points: 72 simultaneous points of engagement

• Axle Design: One-piece solid axle for maximum stiffness

• Bearing System: Chris King precision sealed bearings

• Seal Protection: Heavy-duty bearing seals and threaded drive shell seal ring

• Serviceability: Fully serviceable and rebuildable design

• Manufacturing: Engineered, manufactured, and assembled in Portland, Oregon, USA

• Warranty: 5-Year Warranty

• Color: Red

Product Specifications

• Brand: Chris King

• Model: ISO B Rear Hub

• Color: Red

• Position: Rear

• Axle Size: 148x12mm Boost

• Spoke Holes: 32H

• Engagement System: RingDrive

• Engagement Points: 72

• Bearing Type: Sealed Precision Bearings

• Bearing Race Material: Heat-Treated Surgical Grade Steel

• Hub Shell Design: Updated Shell with Canted Flanges

• Serviceability: Fully Rebuildable

• Intended Use: Trail, Enduro, All-Mountain, Cross-Country MTB

RingDrive Engagement Technology

• 72-Point Engagement: Delivers rapid power transfer for technical trail riding

• Instant Response: Minimizes pedal lag during climbs and obstacle navigation

• Legendary Hub Sound: Produces the iconic Chris King freehub sound

• Efficient Power Delivery: Converts rider input into forward motion with minimal loss

• Premium Performance: Trusted by professional riders and custom bike builders worldwide

Easy Operation / Usage

• Install on compatible Boost 148x12mm mountain bike frames

• Build with a compatible 32-hole rim and spoke configuration

• Pair with an appropriate drivetrain and cassette body configuration

• Periodically inspect hub bearings and seals for optimal performance

• Service using Chris King Hub Service Tools when required

Why Choose This Product

• Industry-Leading Engagement: 72-point RingDrive system delivers exceptional responsiveness

• Premium Bearing Technology: Chris King bearings become smoother over time

• Trail-Proven Durability: Designed to withstand harsh off-road conditions

• Fully Serviceable Design: Rebuildable construction ensures long-term value

• Boost Compatibility: Optimized for modern mountain bike geometry and wheel strength

• Made in USA: Precision-engineered and manufactured in Portland, Oregon

In the Box

• 1 x Chris King ISO B Rear Hub 148x12 Boost Red 32H