The Wolf Tooth Direct Mount Chainrings for Bosch E-Bike Motors are compatible with all Boost and Super Boost bikes that use the Bosch Gen 4 E-Bike Motor. This continues the Wolf Tooth product line of Drop-Stop chainrings for e-bike motors

• For Bosch Gen 4 E-Bike Motors
• Compatible with all Boost and Super Boost bikes
• Drop-Stop B for all 9, 10, and 11spd chains or 12spd SRAM Eagle, SRAM Flattop Road or Transmission (T-Type), KMC, Connex or Wippermann chains
• Drop-Stop ST for use with Shimano 12-speed Hyperglide+ and 12spd KMC chains
• A lightweight chainring with patented Drop-Stop technology
• Direct Mount interface
• Machined with 7075-T6 aluminum
• 55mm chainline
• Made in Minnesota, USA
• Designed for ebike: Yes
• Weight: 65g. (32t); 68g. (34t)
• Color: Black