lockring fixed gear Kappstein Track Lockring

lockring fixed gear Kappstein Track LockringProduct Introduction The Kappstein Lockring is a precision engineered track and fixed gear lockring, designed to securely fix the sprocket to the hub under high drivetrain loads. Manufactured in Germany from high quality 630 stainless steel, the lockring is developed with increased material thickness to improve structural strength and long term reliability. It is compatible with both BSA and Italian threaded track hubs, ensuring broad compatibility

Product Introduction

The Kappstein Lockring is a precision-engineered track and fixed gear lockring, designed to securely fix the sprocket to the hub under high drivetrain loads.

Manufactured in Germany from high-quality 630 stainless steel, the lockring is developed with increased material thickness to improve structural strength and long-term reliability. It is compatible with both BSA and Italian threaded track hubs, ensuring broad compatibility across fixed gear systems.

As part of the drivetrain interface, the lockring plays a critical role in maintaining mechanical stability and safety, particularly under braking forces and reverse torque typical in fixed gear riding.

Why This Lockring Is Different

• Extra-thick construction for improved structural strength
• Designed to prevent deformation during tightening and use
• Compatible with both BSA and Italian threaded hubs
• Precision CNC-machined for secure and consistent fit

Technology Inside

This lockring incorporates key Kappstein engineering and manufacturing principles:

• Extra-Thick Geometry (6.5 mm) – significantly wider than typical lockrings, increasing resistance to deformation and improving load distribution during tightening

• High-Strength 630 Stainless Steel – selected for durability, wear resistance, and long-term structural integrity under repeated drivetrain loads

• Optimized Tool Interface Design – wide engagement surfaces reduce the risk of tool slippage and prevent rounding of notches during installation, addressing a common failure point in standard lockrings

• Precision CNC Manufacturing – fully produced in-house to ensure thread accuracy, surface finish, and consistent engagement with hub threads

• Laser Engraving Integration – marking applied within Kappstein’s production process, maintaining full control over quality and finish

Learn more:

• Our Technology

Real-World Performance

In fixed gear systems, the lockring must withstand continuous torque, reverse loading, and braking forces. The Kappstein Lockring is engineered to deliver:

• Secure fixation of the sprocket under high load
• Resistance to deformation during tightening and riding
• Reliable thread engagement with minimal risk of loosening
• Consistent performance over long service life
• Mechanical stability that supports overall drivetrain integrity

These characteristics are critical for track cycling and fixed gear riding, where drivetrain security directly affects performance and safety.

Applications

Ideal for:

• Track Cycling
• Fixed Gear Bikes
• Singlespeed Drivetrains

Technical Specifications

Material: 630 Stainless Steel
Thread Options: BSA/ISO Standard: 1.29" × 24 TPI or ITA: 1.37" × 24 TPI
Thickness: 6.5 mm
Weight: 23.1g (light weight)
Color: Steel-Silver
Manufacturing: 100% CNC-Machined in Germany
Installation: Mounts with a standard bottom bracket tool
Origin: 100% Made in Germany

• How to select Kappstein Chainrings and Sprockets

Recommended Setup

For optimal drivetrain security and performance, use the lockring with:

• Kappstein track sprockets (Standard or ProLine)
• Compatible track hubs (BSA or ITA thread)
• Proper installation torque using appropriate lockring tools

About Kappstein

Kappstein is a German engineering company specializing in high-efficiency bicycle drivetrain components. Through precision machining and applied mechanical research, the company develops chainrings, sprockets, hubs, and drivetrain systems designed for maximum efficiency, durability, and reliable mechanical interaction.

Learn more about Kappstein and the company’s engineering philosophy.

Manufacturer:

Kappstein GmbH & Co. KG 
Südstraße 15, Gebäude 14
99867 Gotha
Germany
[email protected]