PARK TOOL CC-4.2 Chain Wear Indicator

$29.99

Park Tool CC-4.2 Chain Wear Indicator measures chain wear across multiple types to signal replacement.

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Ships from Guelph, Ontario

Decision guidance

Is this right for you?

Best For

Ideal for cyclists who want to maintain their bike's drivetrain health by accurately measuring chain wear across various chain types and speeds.

Why We'd Choose It

Choose the Park Tool CC-4.2 for its laser-cut precision and drop-in design that contacts the chain in three places, providing accurate wear measurements to extend drivetrain life.

At a glance

Product facts

Use: Chain wear monitoring accessory
Key feature: Laser-cut gauge measuring chain wear at three points

Product Story

Product details

Accurate Chain Wear Measurement

The Park Tool CC-4.2 Chain Wear Indicator is a laser-cut, drop-in style gauge designed to measure a long section of your bike chain accurately. It strategically contacts the chain in three places, providing reliable readings to determine chain wear.

Compatibility and Usage

This tool is compatible with a wide range of chains, including two-sprocket (single-speed) chains and 5-to-13-speed derailleur chains. It helps identify when to replace your chain at specific wear percentages: 1.0% for single-speed chains, 0.75% for 5-to-10-speed chains, and 0.5% for 11-to-13-speed chains, preventing drivetrain damage.

Key Specs

Specifications

Chain Compatibility	Two-sprocket (single-speed), 5-to-10-speed, and 11-to-13-speed chains Includes popular models like SRAM® T-Type and Shimano® XTR®
Wear Indication Thresholds	1.0% for single-speed, 0.75% for 5-10 speed, 0.5% for 11-13 speed chains Indicates when to replace chain to prevent drivetrain damage
Design	Drop-in style gauge with laser cut precision Contacts chain in three places for accurate measurement

Questions & answers

Common questions

What types of chains is the CC-4.2 compatible with?

It works with two-sprocket (single-speed) chains and 5-to-13-speed derailleur chains, including popular models like SRAM® T-Type and Shimano® XTR®.

How does the CC-4.2 indicate when to replace a chain?

It measures chain wear and indicates replacement at 1.0% wear for single-speed chains, 0.75% for 5-to-10-speed chains, and 0.5% for 11-to-13-speed chains.