Bottom Bracket | Round Splined Shaft | ISIS | Fits 1 3/8"

Schwinn IC Indoor Cycle 1 3/8" ISIS Bottom Bracket

• 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
• This bottom bracket has a diameter of 1 3/8" for the mounting hole in the frame of certain Schwinn IC bikes
• Due to different size ISIS replacements, this diameter must be the same as the bottom bracket being replaced

Damage to the parts or equipment can result from improper torque

Not compatible with Schwinn bikes manufactured 2003 and earlier which have bottom brackets with a square tapered shaft.