SHIMANO TL-CN42 CHAIN WEAR INDICATOR trek kids Features Trek Madone 9-Series Upper

Features Trek Madone 9-Series Upper Headset Bearing

Daytime Hyperflash 2

Designed and dyno-tested in-house at Barnoldswick

Extra: Speed and cadence magnets

Clear and non-staining

SHIMANO TL-CN42 CHAIN WEAR INDICATOR trek kids Features Trek Madone 9-Series UpperThe Shimano TL CN42 chain wear indicator delivers precision measurement with its unique 3 pin design, eliminating gaps between roller and pin for accurate readings. Crafted from heat treated stainless steel with laser cut precision, this tool quickly identifies chain wear before it damages sprockets and chainrings. Simply guide the rollers in alignment to check wear effortlessly. Essential maintenance for preserving shifting performance and extending