Flex 24V 1/2-Inch High Torque Impact Wrench Kit FX1471

When Fastening Jobs Demand Power, Reach for the Flex 24V High Torque Impact Wrench

Strength, long-lasting performance, and efficiency are what we look for in an impact wrench. The Flex high torque impact wrench is definitely impressive right out of the box. We ran it through a few quick tests to experience some of the innovative features Flex has packed into this bad boy.


Flex 24V High-Torque Impact Wrench Performance

Flex rolled out their 1/2 inch high torque impact wrench kit with an impressive 800 ft-lbs of fastening and 1150 ft-lbs. of breakaway torque. That’s not the highest available in the cordless world, but it’s still very impressive. The sensor-free brushless motor and 5.0Ah battery pair that muscle with up to 2450 IPM and a max speed of 2000 RPM. Low and medium speeds net 500 and 1000 RPM when you need more control.

When it comes to passenger vehicles this power level should have no problem taking off even the most stubborn lug nuts. You’ll likely find its limits when you start turning to larger vehicles and equipment. There’s a key in the drive size, though. With a 1/2-inch square drive, you’re best off working with sockets under 1 1/2 inches. From there, it’s time to look at 3/4- or 1-inch drives.

FLEX 24V Impact wrench

Flex 24V 1/2-Inch High Torque Impact Wrench Design Notes

Vibration Control

Flex’s unusual “Shock Shield” design isolates the motor housing from the handle, reducing vibrations and making it very comfortable to operate compared to many high-torque models.

shock shield

Weight and Balance

Altogether, this tool feels good in the hand and is fairly well balanced, however, it is a bit on the heavier side. At just over 9 pounds with the battery, it’s heavier than some of the other cordless high torque options.

FLEX high torque impact

Assist Mode

Another nice feature is the Reverse mode that engages when you’re loosening a fastener. This helps keep nuts and bolts from dropping away from you, or worse, flying away in a manner that can cause injury. After a few rotations, the motor automatically stops, even if it never has to impact.

What’s unusual is that there’s not a complementary assist mode in forward. It operates just like mode 3.

Speed Modes

Additional Features

  • LED Work Light
  • Therma-Tech Heat Management
  • 5.0Ah Lithium-Ion Battery and 160W Fast Charger Included in the Kit
  • Flex Hardshell Case

Flex 24V 1/2-Inch High Torque Impact Wrench Price

This high torque 24V brushless impact wrench kit price is pretty reasonable when you consider everything it includes. For $299, you receive the bare tool, one 5.0Ah battery, a 160W Fast Charger, and a sturdy hardshell case. Flex offers a 5-year “End-To-End” warranty which covers the tool, battery, and charger with registration.

For early adopters of the Flex system, you can get your tools, batteries, and chargers guaranteed for life if you register them by 12/31/2021.

The Bottom Line

In our opinion, this is a solid product. The three torque levels and Removal mode make this tool useful in a variety of situations. It doesn’t matter if you’re in the garage removing lug nuts or out on the jobsite taking on those 1-inch hex bolts, Flex delivers the power you expect from a high torque impact wrench.

At the time we’re writing, this is the only cordless impact wrench on the Flex 24V system. We know it will quickly expand and we’d love to see complementary compact and mid torque impact wrenches high on the priority list.

More Flex Reviews from Pro Tool Reviews

Flex 24V Brushless High Torque Impact Wrench Specifications

  • Model: Flex FX1471-1C
  • Power Source: Flex 24V battery
  • No-Load Speed: 0-500/1,000/2,000 RPM
  • Impact Rate: 0-2,450 IPM
  • Fastening Torque: 800 ft-lbs
  • Nut-Busting Torque: 1,150 ft-lbs
  • Drive Size: 1/2 inch
  • Tool Length: 8.7 in, 222 mm
  • Tool Weight (without battery): 6.9 lbs, 3.1 kg

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