StairMaster Stepper Alternator Belt – OEM Replacement (Used, Tested) | Fits 4200, 4400, 4600 Series

This is a used OEM StairMaster Alternator Belt for commercial steppers. Professionally removed from a working unit and tested for integrity, this belt transfers power from the drive system to the alternator, helping maintain smooth, consistent resistance during workouts.

Ideal for gym owners, techs, or DIY repair projects—save on the cost of new parts without compromising performance.

Product Features:

• OEM StairMaster alternator drive belt

• Transfers power to alternator for resistance control

• Used but tested for flexibility and wear

• Cost-effective solution for restoring function

• Ready to install – no modification required

Condition:

• Used – Good condition

• Checked for cracks, dry rot, and wear

• Retains proper tension and flexibility

• May show cosmetic signs of use (scuffs, minor dust)

Compatible StairMaster Models:

This alternator belt fits the following commercial stepper models:

• StairMaster 4200PT

• StairMaster 4400PT

• StairMaster 4400CL

• StairMaster 4600PT

• StairMaster 4600CL