How to use the tool: 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.

  • Unior model 1643/4 (article 617170)
  • Dimension: 0 - 1.2
  • Length: 137 mm
  • Width: 25.5 mm
  • Thickness: 20 mm
  • Minimum additional lenght: 119.4
  • Maximum additional lenght: 120.6
  • Made by Unior, Slovenia — professional bicycle tools since 1919

Pro chain wear indicator sits in Unior's chain tools range. Listed by BPW as: Unior Pro Chain Wear Indicator (Chain Checker) - 617170 Professional Bicycle Tool, quality guaranteed.

Every Unior tool is covered by Unior's warranty against defects in materials and workmanship — see the Warranty tab.

Unior backs this tool with its Lifetime Warranty against defects in materials and workmanship: if it ever fails through a manufacturing defect it is repaired or replaced free of charge. Normal wear, misuse and modification are not covered. For warranty support, return the tool to Tune Cycles with your proof of purchase and we'll manage the claim with Unior's Australian distributor on your behalf. This warranty is in addition to your rights under the Australian Consumer Law.

  • Unior model 1643/4 (article 617170)
  • Dimension: 0 - 1.2
  • Length: 137 mm
  • Width: 25.5 mm
  • Thickness: 20 mm
  • Minimum additional lenght: 119.4
  • Maximum additional lenght: 120.6
  • Made by Unior, Slovenia — professional bicycle tools since 1919
BrandUnior
Model1643/4
Unior article no.617170
Dimension0 - 1.2
Length137 mm
Width25.5 mm
Thickness20 mm
Minimum additional lenght119.4
Maximum additional lenght120.6
Weight142 g
Supplier codeBPW U1545
SKU BPW-U1545
Barcode # 3838909171708
Brand Unior
Shipping Weight 0.2420kg
Shipping Width 0.120m
Shipping Height 0.040m
Shipping Length 0.150m
Unit Of Measure each