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Deal.ai › Flex
Flex
Flex FX3321-2C Free Random Orbital Polisher Kit

Flex FX3321-2C Free Random Orbital Polisher Kit

5(1 rating)

Best price now

$679.99at Ralda’sdetailsChecked 7 h ago

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $679.99 at Ralda’sdetails (checked Nov 15, 2026).
  • Checked at 3 stores.

Our take on the Flex FX3321-2C Free Random Orbital Polisher Kit

The Flex FX3321-2C is a cordless random orbital polisher built for paint correction and finishing without a cord. Constant speed technology holds high RPMs under pressure, up to 4,350 RPM and 8,700 OPM, and the 11-speed dial plus variable speed trigger give fine control. The kit ships with two 5.0Ah 24V batteries, a 160W fast charger and both 5-inch and 6-inch backing plates. It suits detailers and serious hobbyists who want cordless freedom and a two-battery kit, though it is heavier and pricier than many corded rivals.

Best forPaint correction and polishing on carsDetailers who want cordless freedomUsers who need long runtime from two batteriesFinishing work on large panels
Pros
  • Constant speed holds RPMs under load
  • 11-speed dial plus variable speed trigger
  • Two 5.0Ah batteries and fast charger included
  • Both 5-inch and 6-inch backing plates in the kit
  • Vibration control and optimized gear head reduce fatigue and noise
Cons
  • Heavier than many corded polishers
  • Costs more than comparable corded units
  • Battery runtime still limited versus a corded tool
  • Large kit may be overkill for occasional use

Flex FX3321-2C Free Random Orbital Polisher Kit prices at every store

  • Ralda’sdetailsNew

    In stock

    $679.99Checked 7 h ago
    Visit Ralda’sdetails
  • Vital Detail SuppliesNew

    In stockReturn policy

    $749.99Checked Nov 7
    Visit Vital Detail Supplies
  • Carolina Detail SupplyNew

    Out of stock

    $679.00Checked 7 h ago
    Visit Carolina Detail Supply

Flex FX3321-2C Free Random Orbital Polisher Kit price history

Lowest price we've seen: $679.00 on Nov 15 at Carolina Detail Supply. Tracked across 2 stores since Nov 15.

About the Flex FX3321-2C Free Random Orbital Polisher Kit

The Flex 24V Random Orbital Polisher is a cordless, battery-powered polisher for finishing and polishing work. Constant speed technology keeps RPM high under pressure, up to 4,350 RPM and 8,700 OPM. The motor is brushless.

It has a lightweight body with an ergonomic grip. An optimized gear head reduces high-frequency noise, and vibration control reduces fatigue. An 11-speed control dial and a variable speed trigger set the speed.

The polisher works with all Flex 24V batteries, chargers and tools. The kit includes two 5.0Ah lithium batteries and a 160W fast charger. The Flex Limited Lifetime Warranty applies when the tool is registered within 30 days of purchase at registermyFLEX.com through December 31, 2025.

Power
24V lithium battery, brushless motor
No-load speed
1,350 - 4,350 RPM
Orbit rate
2,700 - 8,700 OPM (no load)
Orbit
0.59 in (15 mm)
Speed control
11-speed control dial with variable speed trigger
Max pad diameter
6 in polishing pad, 6 in back-up pad
Weight
4.6 lbs
Dimensions
15.2 in long x 3.8 in wide x 5.4 in high
Battery system
Compatible with all Flex 24V batteries, chargers and tools
Runtime and charging
THERMA-TECH heat management for 25% longer runtime; high-power, dual fan chargers for up to 50% faster charging
In the box
24V random orbital polisher, 2 x 5.0Ah lithium batteries, 160W fast charger, allen key, 5-inch backing plate, 6-inch backing plate
Warranty
Flex Limited Lifetime Warranty when registered within 30 days of purchase

Questions and answers

Does it keep speed under pressure?
Yes. Constant speed technology maintains high RPMs under load, up to 4,350 RPM and 8,700 OPM, so it does not bog down on stubborn defects.
What comes in the kit?
The polisher, two 5.0Ah 24V lithium batteries, a 160W fast charger, an allen key, and both 5-inch and 6-inch backing plates.
Is it good for beginners?
The 11-speed dial and variable speed trigger make it controllable, but its power and weight suit users with some polishing experience.
How does it compare with a corded polisher?
It trades corded constant power for freedom of movement and two batteries. Corded units are usually lighter and cheaper but tethered.
What is the warranty?
Flex offers a limited lifetime warranty when the tool is registered within 30 days of purchase.
Where is the Flex FX3321-2C Free Random Orbital Polisher Kit cheapest?
At Ralda’sdetails, for $679.99, as of our latest check.
What do buyers say about the Flex FX3321-2C Free Random Orbital Polisher Kit?
Rated 5 out of 5 from 1 ratings.
Where can I buy the Flex FX3321-2C Free Random Orbital Polisher Kit?
3 stores we checked sell it, including Ralda’sdetails, Carolina Detail Supply, Vital Detail Supplies.

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