Professional Chain Wear Indicator – 1643/4
- Provides a quick and easy way to determine the wear of a chain
- Replace the chain at 0.6% stretch to increase drive train life
To alleviate poor shifting and uneven drive train wear, most manufacturers recommend chain replacement at or before 0.6% stretch. Now you can quickly and accurately determine the wear and stretch of any chain. Simply insert the chain checker’s pins into two links, press the swing arm gauge tight, and then check the gauge window for an accurate reading.