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|ProForm SMART Performance 400i||ProForm Boston Marathon 4.0|
|Motor Size||2.5 CHP||4.25CHP|
|Running Area||20” by 55”||20” x 62”|
|Weight Capacity||300 lbs||400 lbs|
|Footprint In Use (W,L,H)||35.5" x 73.25" x 59.75"||37" x 64" x 74"|
|Footprint Folded (W,L,H)||35.5” x 39” x 65.25”||N/A|
|Incline Range||0-10%||-6% to 20%|
|Max Speed||10 MPH||15 MPH|
|Treadmill Best For||Walkers||Joggers, Runners|
|Display||3” LCD||10” touchscreen|
|PreInstalled Workout Apps||18||Marathon training programs|
|Heart Rate Monitoring||EKG handlebar grips||Wireless chest strap|
|Water bottle cubbies||Yes||No|
|Warranties||Lifetime frame, 25-year motor, 1-year parts and labor||Lifetime for frame, deck, and motor, 6 years on parts and electronics, 3 years on labor|
|Belt||2-ply||2-ply commercial belt|
|Roller Size||1.9” rear||2.5” front and back|
|Cushioning||ProShox™ Cushioning||Runners Flex™ Impact Control|
|Customer Support||ProForm has multiple ways to provide support for their customers. There is a live chat function on their website, a help request form, phone support and email options available to answer customer questions||As this treadmill is discontinued, the customer service is not through ProForm. Support will depend on the third-party company you purchase from|
|Return Policy||ProForm offers a 30-day trial period which you can return your product for a full refund, minus a 10% restocking fee. If your product is damaged or defective, you do not have to pay the restocking fee.||Depending on where you purchase this discontinues treadmill, you will be subject to their return policy|
Which is better? Comparison of ProForm SMART Performance 400i VS ProForm Boston Marathon 4.0 treadmills. Compare the characteristics of each product and make your choice. Below you can see the most important specifications that you should check before purchase.