FIT Bike Co Cassette Driver

Product Overview

The FIT King Kong Driver (KMX97) is a replacement cassette hub driver for FIT cassette hubs. It includes two sealed 6802-2RS bearings for smooth engagement and reliable freewheeling performance. This driver allows the cassette mechanism to function properly, transmitting power when pedaling forward while freewheeling when coasting.

Key Features

• Includes sealed bearings – Two 6802-2RS sealed cartridge bearings protect internal components from contaminants and maintain smooth rotation with minimal maintenance
• Direct replacement part – Designed specifically for FIT cassette hubs, ensuring proper fitment and engagement with hub body and pawl mechanism
• King Kong designation (KMX97) – FIT's naming for this driver model, indicating compatibility with specific FIT cassette hub generations

Technical Specifications

• Model: King Kong Driver (KMX97)
• Bearing type: 6802-2RS (sealed cartridge)
• Bearing dimensions: 24mm OD, 15mm ID, 5mm thickness
• Quantity: Includes 2 bearings
• Compatible with: FIT cassette hubs (verify specific hub model compatibility)

Compatibility and Ideal Use Cases

This driver fits FIT cassette hubs that use the KMX97 driver specification. Before ordering, verify your hub model accepts this driver—not all FIT cassette hubs use the same driver design, and using an incorrect driver will result in improper fitment and hub failure. Ideal for riders experiencing worn or damaged drivers showing symptoms like skipping under load, grinding noise during engagement, or rough freewheeling. Also suitable as a preventive maintenance part for high-use hubs or when rebuilding a cassette hub. Installation requires basic hub disassembly tools and understanding of cassette hub internals—if unfamiliar with hub service, consider professional installation to ensure proper function and pawl engagement.