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⚙️ Stay ahead of the ride—measure, maintain, and master your chain’s lifespan!
The Park Tool CC-4.2 Bicycle Chain Wear Checker is a precision gauge designed to accurately measure chain wear on all 1/2" pitch bicycle chains, including 5-to-13 speed and SRAM AXS 12-speed models. Featuring a go/no-go indicator for 0.5%, 0.75%, and 1.0% wear, this lightweight, durable tool helps cyclists avoid drivetrain damage by signaling the perfect time for chain replacement. Made in the USA and backed by a limited lifetime warranty, it’s a must-have for serious riders and bike professionals.







| ASIN | B0DNN5FSSH |
| Best Sellers Rank | #7,742 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #12 in Bike Shop Tools |
| Brand Name | Park Tool |
| Customer Reviews | 4.8 4.8 out of 5 stars (358) |
| Included Components | Chain Tools |
| Item Dimensions | 11.51 x 0.23 x 3.35 inches |
| Item Highlight | Park Tool CC-4.2 Chain Wear Gauge - Accurate Chain Condition Checker |
| Item Weight | 70 g |
| Manufacturer | Park Tool |
| Material Type | Multi |
| Model | QKCC42 |
| Number of Items | 1 |
| Part Number | CC-4.2 |
| UPC | 763477001573 |
| Unit Count | 1 Count |
| Warranty Description | Limited Lifetime Warranty - see parktool.com/warranty |
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