Flex
Flex 24V FX2141 Circular Saw
Flex's 24V in-line sidewinder is one of the sleeper hits of the cordless saw world: 5,800 RPM, a 2-5/8 in depth of cut that clears 3x lumber in one pass, and Pro Tool Reviews' 9.5/10 'elite cutting performance' verdict. The balanced in-line design gives a clear view down both sides of the blade, and with a 10.0Ah Stacked Lithium pack Flex claims up to 610 cuts in 2x4 lumber. Magnesium footplate and guards keep it durable without the bulk.
Specifications
Features
Pros
- ✓Elite cutting power — Pro Tool Reviews scored it 9.5/10, noting it never bogged or dropped speed in cross or bevel cuts and hung with the best pro saws in speed testing.
- ✓5,800 RPM no-load speed is near the top of the class, leaving clean edges at full feed rates.
- ✓2-5/8 in depth of cut at 90° matches the deepest sidewinders and clears 3x lumber in a single pass.
- ✓Balanced in-line design gives a clear view down both sides of the blade — unusually good cutline visibility for a sidewinder.
- ✓Outstanding runtime — up to 610 cuts in 2x4 lumber per charge with the 10.0Ah Stacked Lithium battery.
- ✓Complete feature set: electric brake, LED light with cutline blower, rafter hook, arbor lock with onboard wrench storage, and an included vacuum adapter.
- ✓Owners at Lowe's rate the kit 4.8/5 across 631 reviews — among the best-reviewed cordless saws at any price.
- ✓5-year warranty on both tool and battery beats the 3-year pro-brand standard, and magnesium footplate and guards shrug off drops.
Cons
- ✗Heaviest saw in its class once you mount big packs — 12.7 lbs with the 10Ah Stacked Lithium battery (vs 9.0 lbs bare).
- ✗The engraved depth gauge sits on the inside of the upper blade guard, making depth setting trial-and-error (Pro Tool Reviews' main gripe).
- ✗Flex's 24V line is Lowe's-centric with a smaller tool catalog than DeWalt/Milwaukee — platform buy-in is a bigger bet.
- ✗Needs Stacked Lithium packs to hit peak performance numbers, and those batteries are expensive.
- ✗$399 for the 10Ah kit is a big step up from value rivals like Ridgid's $249 kit.
- ✗24V batteries are proprietary to Flex — zero cross-compatibility with any other platform.
- ✗No track or guide-rail compatibility, unlike Bosch's ProFactor saw.
- ✗The launch-era Founders lifetime warranty is long gone; the 5-year coverage requires registration.
Common Questions
Can the FX2141 really cut 3x lumber in one pass?
How many cuts do I get per battery charge?
Do Flex batteries work in any other brand's tools?
What happened to Flex's lifetime warranty?
Is the kit worth $399 when Ridgid sells a kit for $249?
Compare the Flex 24V FX2141 Circular Saw
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