Sprocket, 15T

Description

Sprocket, 15T is a replacement drive component for select Schwinn Airdyne exercise bikes, designed to restore smooth chain movement in the pedal drive system. Ideal for repairing worn schwinn airdyne parts, this 15-tooth sprocket fits specific Airdyne pedal assemblies where proper chain engagement and consistent resistance performance matter.

• Replaces Schwinn OEM part number 90540 / 90540-SA in compatible pedal drive assemblies.
• Commonly referenced for Airdyne 3 and Airdyne 4 bikes using the idler and fan sprocket arrangement.
• Used in select older Schwinn Airdyne models from approximately the late 1980s through 1990s, depending on serial range and build version.
• Please match your original sprocket tooth count and part number before ordering, especially when sourcing an airdyne pedal drive parts sprocket replacement.

This schwinn sprocket features a 15-tooth profile engineered for dependable chain tracking within the Airdyne pedal drive system. It is a practical solution when the original sprocket shows tooth wear, chain skip, or uneven pedal feel. Depending on supply, this part may be sourced as an OEM replacement or a high-quality aftermarket equivalent built to meet original fit and function. Installation is generally straightforward for experienced DIY owners, though basic mechanical skill and inspection of related chain, axle, and idler components are recommended for best results.

Restore reliable performance with an OEM-quality replacement that installs easily and ships same day from our warehouse.