1 7/8" ISIS OEM Bottom Bracket for Schwinn IC & AC Bikes

• This OEM (Original Equipment Manufacturer) bottom bracket has a diameter of 1 7/8" for the mounting hole in the frame of certain Schwinn IC & AC Bikes
  • Due to different size ISIS replacements, this diameter must be the same as the bottom bracket being replaced
• Bottom Bracket is an ISIS (International Splined Interface System) drive style with the round splined shaft
  • Mates to the round splined hole of the crank arm

Damage to the parts or equipment can result from improper torque