• Home
  • Chain Wear Indicator CC-4.2
Chain Wear Indicator CC-4.2

Park Tool Chain Wear Indicator CC-4.2

Product code: PPRTMAINTCC42
  • $17.99
The Park Tool CC-4.2 Chain Wear Indicator quickly and accurately measures chain elongation, helping determine when replacement is needed to maintain smooth shifting and drivetrain longevity.

The Park Tool CC-4.2 Chain Checker takes the guesswork out of knowing when it’s time to replace your chain. A worn chain not only impacts shifting performance but can also accelerate wear on expensive drivetrain components, resulting in premature replacement.

This precision, laser-cut gauge measures a longer section of chain for improved accuracy and makes contact in three strategic points, ensuring consistent results every time. Simply drop the tool into place, and you’ll instantly see whether your chain has reached 0.5%, 0.75%, or 1.0% wear—key replacement thresholds recommended by most manufacturers.

Compatible with 5 to 13-speed derailleur chains, including SRAM® T-Type, Flattop™, Shimano® XTR® 12-speed, Campagnolo® Ekar™ 13-speed, and single-speed chains, it’s an essential workshop or home mechanic tool to keep your drivetrain running smoothly and extend the lifespan of your components.

 

Key Features

  • Precision Measurement: Laser-cut gauge contacts the chain in three places for accurate wear readings.
  • Compatibility: Works with 5 to 13-speed derailleur chains, including:
  • SRAM® T-Type and Flattop™
  • Shimano® XTR® 12-speed
  • Campagnolo® Ekar™ 13-speed
  • Single-speed chains
  • Wear Indicators: Measures at 0.5%, 0.75%, and 1.0% wear—thresholds recommended by most chain manufacturers.
  • Build Quality: Made in the USA and backed by Park Tool’s limited lifetime warranty.
  • Ease of Use: Drop-in style gauge makes checking chain wear quick and intuitive. 

RelatedProducts

  • Endurance 725 Disc - Sport

    Endurance 725 Disc - Sport

    The Endurance 725 Disc strikes the perfect balance between comfort and performance. With the traditional style and compliance of a Reynolds steel frame and cutting-edge design features, this is a modern steel road bike destined for those long days in the saddle. In the Sport specification, the Endurance 725 Disc is paired with Shimano's Tiagra 10-speed groupset, robust and reliable Mavic Aksium 1 wheels, and puncture-resistant Continental Ultra Sport tyres with a unisex Selle Italia Model X Superflow saddle.
    From $1,099
    Was $1,599
    Save $500
  • CGR 725 - Sport

    CGR 725 - Sport

    A robust handcrafted Reynolds 725 steel frame and carbon forks tuned for on or off-road adventures ensure a buttery smooth ride quality you can enjoy equally on smooth tarmac or broken backroads. In Sport specification, the CGR 725 is paired with Shimano's Tiagra 10-speed groupset, robust Mavic Allroad 1 wheels, and multi-purpose Schwalbe G-One tyres with a Selle Italia X3 Boost saddle.
    From $1,199
    Was $1,699
    Save $500
  • Endurance 725 Disc - Pro

    Endurance 725 Disc - Pro

    The Endurance 725 Disc strikes the perfect balance between comfort, performance, and efficiency. It perfectly blends the compliance of a Reynolds steel frame with the precision wireless electronic shifting of a Shimano 105 Di2 2x12 speed transmission.
    From $1,999
    Was $2,799
    Save $800
  • Endurance 725 Disc - Enthusiast

    Endurance 725 Disc - Enthusiast

    The Endurance 725 Disc strikes the perfect balance between comfort and performance. With the traditional style and compliance of a Reynolds steel frame and cutting-edge design features, this is a modern steel road bike destined for those long days in the saddle. In Enthusiast specification, the Endurance 725 is paired with the premium mechanical gear shifts of Shimano's 105 12-speed groupset, robust and reliable Mavic Aksium 1 wheels, puncture-resistant Continental Ultrasport tyres, and unisex Selle Italia Model X Superflow saddle.
    From $1,599
    Was $1,999
    Save $400
  • CGR AL - Sport

    CGR AL - Sport

    Built to handle multi-surface rides with confidence, from rugged roads to smooth tarmac, the CGR AL's contemporary aluminium design, road plus tyres, and comfort-oriented riding position make it perfect for year-round riding. In Sport specification, the CGR AL is paired with the accurate and reliable Shimano Tiagra 2x10-speed groupset, versatile Mavic Allroad 1 wheels, fast-rolling 40mm Schwalbe G-One tyres, and a Selle Italia X3 saddle.
    From $1,399