.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;}Wolf Tooth Trek TQ Direct Mount Chainring - Drop-Stop ST 32T Black. Wolf Tooth Direct Mount Chainrings for Trek TQ E-Bike Motors are compatible with all Boost and Super Boost bikes that use the Trek TQ Motor. This brings a lightweight chainring with patented Drop-StopA(R) technology to e-bike chainrings for the first time. Direct Mount Chainrings for Trek TQ E-Bike Motors are machined with 7075-T6 aluminum at Wolf Tooth in Minnesota USA.55 mm chainline