Short Description
The Unior 1658/2P Sprocket Wear Indicator is a precision workshop tool designed to quickly assess cassette sprocket wear and determine when replacement is required. Built from hardened carbon steel with a chrome-plated finish, it provides reliable, repeatable results for professional mechanics and serious home bike maintenance.

Key Features

• Accurate Wear Detection: Designed to measure sprocket wear and identify when a cassette needs replacement
• Compatibility: Suitable for Shimano HG and IG sprockets from 12 to 21 teeth
• Durable Construction: Made from hardened Premium Flex Plus carbon steel for long service life
• Professional Finish: Chrome-plated surface improves corrosion resistance and durability
• Workshop Ready: Ideal for bike shops and serious home mechanics maintaining drivetrains

Product Overview
The Unior 1658/2P Sprocket Wear Indicator is a specialised diagnostic tool used to determine the condition of rear sprockets and ensure optimal drivetrain performance. It allows mechanics to test whether a cassette will function correctly with a new chain, helping prevent premature wear and drivetrain issues. The tool works by applying controlled force to the chain on a selected sprocket; if the chain binds or slips off under pressure, the sprocket is worn and should be replaced. This simple method provides a reliable way to maintain shifting performance and extend drivetrain lifespan. :contentReference[oaicite:0]{index=0}

Specifications

• Brand: Unior
• Model: 1658/2P
• Product Type: Sprocket wear indicator / cassette diagnostic tool
• Compatibility: HG and IG sprockets (12–21 teeth)
• Material: Premium Flex Plus carbon steel
• Finish: Chrome plated (ISO 1456:2009)
• Length: 270 mm
• Weight: 77 g
• Use: Bicycle drivetrain maintenance
• Manufacturer Code: 629230

Ideal For

• Bike workshop and professional mechanics
• Diagnosing cassette wear accurately
• Preventing premature chain and cassette damage
• Routine drivetrain maintenance

What’s Included

• 1 × Unior 1658/2P Sprocket Wear Indicator

Care & Notes
Clean after use and store in a dry environment to prevent corrosion. This tool is designed specifically for checking sprocket wear and should be used according to manufacturer instructions for accurate results. Regular drivetrain inspection helps maintain smooth shifting and component longevity.

Why Buy From LK Bikes
LK Bikes supplies professional-grade workshop tools from trusted brands, supported by expert advice, reliable service and strong aftersales support.