Description
The Spoke Protector w/ Hole, AD4 is a direct replacement guard for select Schwinn fan bike pedal-drive assemblies, helping protect the spoke area while maintaining proper component spacing on older Airdyne models. If you are sourcing schwinn airdyne parts for a worn or cracked drive-side shield, this replacement is made for the Schwinn Airdyne AD4 pedal drive setup.
- Fits Schwinn Airdyne AD4 bikes, commonly listed for 1990-present parts diagrams.
- Replaces OEM part number 90887; sold here as SKU 90887-SA.
- Used in the pedal drive assembly and identified in AD4 schematics as the airdyne pedal drive parts spoke protector w/ hole.
- Pairs with related hardware such as clip 90827 on AD3/AD4 service listings.
- Often referenced as a schwinn spoke protector w/ hole for restoration and repair projects.
This replacement spoke protector is designed for the AD4's pedal-drive area and features the factory-style center hole configuration used on original assemblies. It is a practical solution when the existing guard has become brittle, cracked, or missing after years of use. Built to match the form and function of the original part, it is ideal for routine maintenance, full bike rebuilds, or keeping vintage Airdyne units operating safely and cleanly. Installation is generally straightforward for DIY repairers already working in the drive section, though partial disassembly of adjacent components may be required depending on your bike's condition.
OEM-quality replacement for your Schwinn Airdyne AD4, with easy DIY installation and fast shipping from our warehouse.
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