ISIS AC Performance Bottom Bracket, Overdrive w/Bolts

Description

The ISIS AC Performance Bottom Bracket, Overdrive w/Bolts is a direct-fit schwinn ac parts replacement for Schwinn AC and select IC indoor cycling bikes. Designed to restore smooth crank rotation and secure drivetrain performance, this bottom bracket fits bikes that use the Schwinn 003-1508 overdrive-style ISIS assembly.

• Replaces Schwinn OEM part number 003-1508.
• Commonly used on Schwinn AC Performance indoor cycles and certain Schwinn IC/AC series bikes using an ISIS round splined shaft design.
• Fits frames with an approximately 1 7/8" mounting-hole diameter.
• Includes mounting bolts for a complete ac performance isis ac performance bottom bracket overdrive replacement.
• Pairs with compatible ISIS crank arms found on Schwinn commercial indoor bikes.

This assembly is an OEM-style bottom bracket built with a round splined ISIS interface to match the original crank connection on compatible Schwinn bikes. Published specs list an overall width of approximately 4 1/2" and an outside diameter of 1 7/8", making it important to verify your existing unit before ordering. Whether you are servicing studio fleet equipment or a single bike, this schwinn isis ac performance bottom bracket overdrive helps eliminate play, rough pedaling, and worn bearing performance. Installation is typically a moderate repair for technicians or experienced DIY users with the proper crank and bottom bracket tools.

Count on an OEM-quality replacement for dependable fit and smooth operation. Ships same day from our warehouse.