Kactus ceramic wheel hub bearings for bicycles

KACTUS TECH Ceramic Bearings – For Bicycle Wheel Hubs & Bottom Brackets

1. Product Overview Kactus Tech Ceramic Bearings are high-performance upgrade components engineered for bicycles (Road, MTB, Touring). Featuring premium ceramic balls paired with precision-machined races, these bearings significantly minimize friction, ensure ultra-smooth rotation, and deliver a substantially longer service life compared to traditional steel bearings.

2. Key Features

• Brand: Kactus Tech (Authentic product with sharp laser-etched engraving on the inner race).

• Ball Material: Premium ceramic balls featuring ultra-high hardness, perfect roundness, water resistance, high heat tolerance, and zero rust.

• Superior Rolling Efficiency (High Spin): Ultra-low rolling resistance for smooth, effortless rotation, helping riders conserve pedaling energy.

• 2RS Dual Dust Seals: Double-sided sealed rubber covers effectively prevent dirt, sand, and water ingress while retaining the internal lubricant over the long haul.

• Exceptional Durability: Minimizes wear and tear, maintaining stable, reliable performance even at high RPMs.

3. Specifications & Sizing Chart (Dimensions: Outer Diameter [OD] x Inner Diameter [ID] x Width/Thickness [B])

• 6901-2RS: 24 x 12 x 6 mm (Front/rear hubs, freehub bodies)

• 6802-2RS: 24 x 15 x 5 mm (Front/rear hubs, freehub bodies)

• 15267-2RS: 26 x 15 x 7 mm (Front/rear sports bicycle hubs)

• 15268-2RS: 26 x 15 x 8 mm (Specialized bicycle hubs/axles)

• 6803-2RS: 26 x 17 x 5 mm (Bicycle wheel hubs, bottom brackets)

• 17287-2RS: 28 x 17 x 7 mm (Bicycle hubs, freehub bodies)

• 6902-2RS: 28 x 15 x 7 mm (Hub axles, wheel axles)

• 6903-2RS: 30 x 17 x 7 mm (Hub axles, disc brake freehubs)

• 6804-2RS: 32 x 20 x 7 mm (Bottom brackets [BB], large thru-axle hubs [15/20 mm])

• 6904-2RS: 37 x 20 x 9 mm (Bicycle bottom brackets, heavy-duty hubs)

4. Sizing Guide

• Please carefully check the model number stamped on your existing bearing's rubber seal, or use a vernier caliper to accurately measure three dimensions before ordering: Outer Diameter (OD), Inner Diameter (ID), and Width/Thickness (B).

• Ideal for upgrading hub sets from popular brands (such as Novatec, Koozer, DT Swiss, Powerway, etc.) or bottom brackets that share matching dimensions.