If it's minimal maintenance you're after, our quality PVC belts with impregnated lubrication require less attention to make things run smoothly.
This Sportsmith treadmill running belt fits certain model#s of ProForm Performance 400i*

Fits model# PFTL595150*
Fits model# PFTL595152*
Fits model# PFTL595153*
Fits model# PFTL595154*

Screws work to attach the deck trim to the deck
User facing surface: Black Diamond
User facing material: PVC
Impregnated Lubrication
No need to apply lube during belt replacement

Finger-spliced seam
*Some machines with the same name use different parts. This is why you should always match your model# or serial#.