Proform 520 ZN Treadmill Review
TREADMILL DOCTOR NOTE :
A good value but still some very cheap parts. What do you expect for $599?
The warranty on the Proform 520 ZN is sad. Parts and labor are covered for 1 year, the motor is covered for 25 years, and the frame is covered for life. This kind of coverage is common for treadmills that are this inexpensive.