Belt Poly-V (Keiser)

Description

The Belt Poly-V (Keiser) is a genuine drive belt designed for indoor cycling parts service on Keiser bikes, restoring smooth power transfer between the flywheel and crank system. This keiser belt poly-v fits Keiser M3-series bikes and is commonly used in the flywheel crank assembly.

• Compatible with Keiser M3 indoor bikes using OEM part number 555406.
• Also referenced on parts diagrams for Keiser M3i bikes as BELT – POLY V, part 555406.
• Found in the Keiser M3 flywheel/crank area and sold within m3 flywheel crank parts belt poly-v replacement applications.
• Common replacement choice when servicing worn, glazed, slipping, or noisy belts on older and current M3 platform bikes.

This replacement belt is built to deliver the quiet, efficient performance Keiser bikes are known for. The Poly-V design helps maintain consistent engagement across the pulley system while minimizing vibration and unnecessary drivetrain noise. If you are shopping for dependable keiser m3 parts, this belt is a direct-fit option matched to OEM part number 555406. It is ideal for preventive maintenance or for correcting belt wear in the flywheel drive system. Installation is typically considered a moderate DIY repair and may require removal of covers and careful belt routing during reassembly.

Choose this OEM-quality replacement for reliable performance, easy serviceability, and fast shipping from our warehouse.

Shop the full range of Keiser M3 spin bike parts at Krislynn.