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IMAGES & OEM No's for Reference Only
- Schwinn Bottom Bracket OEM Ref 80036 for indication only.
- Schwinn Bottom Bracket, 1 3/8", Isis Ref 80036
- This bottom bracket is an ISIS (International Splined Interface System) drive style with the round splined shaft. This bottom bracket is for use with crank arms that have the round splined hole.
- There are different size ISIS bottom bracket replacements. This bottom bracket has a diameter of 1 3/8" for the mounting hole in the frame. This diameter must be the same as the bottom bracket being replaced.
- used on
- •Used on "Evolution SR" units 2003 or older.
- •The fist four number on the serial number will tell you what month & year the unit was manufactured.
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