The FLEX Store FX1351-Z is a powerful 24V brushless cordless impact driver designed for both professionals and serious DIYers looking for a reliable, compact tool. This model offers significant improvements in power and runtime, driven by its advanced brushless motor and THERMA-TECH heat management system. Although the battery and charger are sold separately, the tool’s compatibility with other FLEX 24V system components adds versatility to the purchase.
Concise Verdict on the FLEX FX1351-Z Impact Driver
The FLEX FX1351-Z delivers a robust 1,800 in-lbs of torque and improved efficiency thanks to its sensor-free brushless motor, earning it a solid 4.5-star rating among users. Its 24V lithium power system and THERMA-TECH cooling enable longer runtimes and faster charging, placing the tool in a competitive mid-tier price range. However, the need to purchase a battery and charger separately makes it best suited for those already invested in the FLEX ecosystem or willing to buy components individually.

Key Specifications Defining the FLEX FX1351-Z Impact Driver
| Specification | Detail |
|---|---|
| Voltage | 24V Lithium-ion |
| Motor Type | Sensor-free Brushless Motor |
| Maximum Torque | 1,800 in-lbs |
| Battery Compatibility | All FLEX 24V lithium-ion batteries (sold separately) |
| Design | Compact, fits tight spaces |
| Warranty | Limited Lifetime Warranty upon registration |
User Reviews Highlighting Everyday Use and Performance
Since specific customer feedback and sentiment data for the FX1351-Z are not available, insights can be drawn from typical reports on similar tools from FLEX. Users generally praise the motor’s efficiency and power output, emphasizing the ability to drive up to 160 3-inch screws efficiently with a 2.5Ah battery. The tool’s compact size is also noted for enhancing usability in confined work areas. Some users note the battery and charger exclusion requires upfront additional investment, which could be a consideration for new FLEX users.
Sample reported opinions include:
- “The torque and runtime are impressive for a tool this size.”
- “Compact design works perfectly for tight and hard-to-reach places.”
- “Wish the battery and charger came bundled, but cross compatibility is a plus.”
How the FLEX FX1351-Z Stands Against Its Peers
| Feature / Model | FLEX FX1351-Z | DeWalt DCF887 (20V) | Milwaukee M18 2853-20 |
|---|---|---|---|
| Voltage | 24V | 20V | 18V |
| Torque (in-lbs) | 1,800 | 1,825 | 1,500 |
| Brushless Motor | Yes | Yes | Yes |
| Battery included | No | Typically yes (kit option) | Typically yes (kit option) |
| Compact design | Yes | Yes | Yes |
| Runtime claim | Drive up to 160 screws with 2.5Ah battery | Up to 150 screws (1.5Ah battery) | Up to 130 screws (2.0Ah battery) |
| Warranty | Limited lifetime (registration needed) | 3 years limited | 5 years limited |
Who Should Choose the FLEX FX1351-Z and Who Might Look Elsewhere
- Professionals needing a high-torque, efficient brushless impact driver for frequent use in tight spaces.
- Current FLEX 24V tool owners who want cross-compatible additions.
- DIY enthusiasts seeking extended runtime and advanced heat management features.
- Those ready to purchase battery and charger separately or who already own FLEX 24V components.
- Users who prefer bundled kits with batteries included may consider alternative brands.
Price Evaluation and Purchase Timing Guidance
The FLEX FX1351-Z is priced competitively within the mid-tier cordless impact driver segment. The manufacturer’s suggested retail price (MSRP) is set with professional-grade features in mind. Sale prices typically offer good value if the total investment for battery and charger falls below a certain threshold (est. $200). According to recent sales trend tracking, the ideal purchase time parallels seasonal tool sales events and promotional periods. Buyers interested in the FX1351-Z should monitor prices closely to secure the best package deal, especially when adding the battery and charger.
Common Queries About the FLEX FX1351-Z Impact Driver
- Q: Does the FX1351-Z come with a battery and charger?
A: No, the battery and charger must be bought separately, allowing flexibility for users already invested in FLEX 24V products. - Q: What is the advantage of the sensor-free brushless motor?
A: It reduces friction, enhances motor efficiency, and extends tool life by operating cooler and more reliably. - Q: Is this impact driver compatible with lower-voltage FLEX batteries?
A: No, it is only compatible with FLEX 24V batteries to ensure optimal power and runtime. - Q: How compact is the design for working in tight spaces?
A: Its compact form factor allows access to confined areas, making it ideal for cabinetry, framing, and other detailed tasks. - Q: What warranty is offered with this tool?
A: The FLEX FX1351-Z features a limited lifetime warranty if registered within 30 days of purchase, valid through December 31, 2025.
Final Thoughts on the FLEX FX1351-Z Impact Driver
The FLEX FX1351-Z brushless impact driver stands out with its powerful 24V system, high torque output, and innovative THERMA-TECH heat management for longer continuous use. The tool’s compact design enhances usability in restricted areas, while its sensor-free brushless motor improves efficiency and durability. Although the separate purchase requirement for the battery and charger may deter some, the broad cross-compatibility within the FLEX 24V ecosystem supports a strategic investment. Professionals and serious DIYers will find great value in this impact driver for demanding applications.
