Unior Pro Chain Wear Indicator Wahoo+ZWIFTJulySale New ZR1 DB hub is

New ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement

lock securely into place

Axle Fixing method: 12 mm E-THRU

which significantly minimizes the risk of tire cuts and punctures

Unior Pro Chain Wear Indicator Wahoo+ZWIFTJulySale New ZR1 DB hub isTo 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. Mfr Claimed Weight TBC