Assault Fitness Products: AssaultBike, AssaultRunner, and AssaultRower Guide

Assault Fitness products fall into three families of human-powered cardio machines: AssaultBike air bikes, AssaultRunner curved treadmills, and AssaultRower air rowers. The maker lists eight models, from about $750 for the Classic bike to about $4,500 for the Runner Elite. Paying more mostly buys longer warranties and higher user limits. For how these machines fit against other cardio types, start with our cardio machines guide.

What’s in the assaultfitness.com products range

The company trades as Assault Fitness, and its warranty text names LifeCore Fitness, Inc. Its FAQ limits shipping offers to the 48 contiguous states and allows returns only within 30 days, in original packaging on a pallet. It also apologizes for order delays, so ask about a delivery date before you pay.

AssaultBike models

The maker’s comparison chart separates the three:

• Classic: Chain drive, 27-inch steel fan, and metal chain guards. It uses Polar wireless heart rate and has no Bluetooth.
• Pro X: A two-stage belt drive, which the maker says is quieter than a chain. It adds Bluetooth, ANT+, and a device and bottle holder.
• Elite: Chain drive, a larger seat with 12 height settings, a removable wind screen, and upper or lower body isolation. It’s the only one the chart lists with labor coverage.

Wind screens and other extras are covered in our Assault bike parts guide.

AssaultRunner curved treadmills

All three models share a 17 x 62 inch slatted surface, no motor, and a Bluetooth and ANT+ console. The Elite raises the user limit to 400 lb and adds bottle holders, while the Pro gets reinforced uprights and a larger console. The Classic’s warranty applies to home use only. At 280 lb or more, plan how you’ll get one indoors.

Is a curved treadmill actually harder?

Assault says its deck burns more calories and raises heart rate faster than motorized treadmills, and calls it low impact. The research is small, fairly consistent on effort, and less friendly on form:

• Harder at the same speed. Fourteen trained runners worked at a 16% higher share of their oxygen capacity than on a motorized treadmill, and lighter runners were hit hardest. Ten athletic adults ran at 10.7 METs against 7.3. A study of ten team-sport athletes estimated the curve matched about a 6.9% grade. A pilot in four women on an Assault AirRunner pointed the same way.
• But people slow down. The ten adults chose slower easy and moderate paces on the curve, so these speed-matched numbers don’t prove a bigger calorie burn at your own pace.
• Impact. Twenty-seven recreational runners showed lower tibia and head impact accelerations on a curved deck. That isn’t injury data.
• Form. Nineteen recreational runners moved less like they do overground on a curved deck than on a motorized treadmill, though the authors doubted the gap was functionally relevant.

AssaultRower models

The Pro has a three-blade fan and folds its console down to stand upright, while the Elite has a six-blade fan and adds a year of labor. Both are rated to 350 lb. For a quieter feel, compare our water rower guide.

Warranty terms in plain English

Product pages give the headline numbers. The fine print we could read comes from the Classic’s terms on a retailer listing and a 2021 use guide for the older AssaultBike Pro:

• Labor on the Classic falls to the owner.
• Coverage applies to products bought from Assault or an authorized reseller.
• You’re asked to register within 10 days, and you need registration or proof of purchase plus a serial number at claim time.
• Normal wear is excluded.

We couldn’t find a current full warranty document on the maker’s site, so confirm terms in writing. One oddity: the Runner Elite page lists a lifetime belt warranty and also a 150,000-mile belt lifespan.

How Assault compares

Other air bikes

Schwinn’s AD6 lists below the Pro X with a 10-year frame term, and Centr’s Perform Series lists limited lifetime consumer coverage. Titan’s 1-year term is the short one. We couldn’t read Rogue’s pages to confirm Echo Bike specs, so it isn’t included.

Air bikes also hold up as a serious test. In 15 adults, an air bike oxygen test landed 3.31 mL/kg/min below a treadmill test on average, and closer for regular users. In 12 healthy men, an AssaultBike protocol reached higher peak oxygen use than a standard cycle test. Both are small.

Other curved treadmills

TrueForm is the direct rival. Its Trainer lists level with the Runner Pro at about $3,500, with a lifetime frame term. Its Runner starts near $6,200 and lists a far higher user limit. A motorized folding treadmill such as the SOLE F63 costs far less, sets the pace for you, and has a wider 20-inch deck, but it needs an outlet.

What to weigh before you choose

Price tiers

Safety

• Handles move with the pedals. The maker’s AssaultBike Pro guide says not to let children under 16 use the bike or leave children unsupervised around it, and never to move it by the handlebars.
• A curved belt moves when you step on it. Hold the rails getting on and off, in our judgment.
• Check for recalls. A CPSC title search on Nov 5, 2026 returned no recalls for “Assault.” Check again for a used machine.
• Stop if something feels wrong. The same guide says to stop for dizziness, chest pain, or nausea and see a physician before continuing.