RUPES BigFoot LHR21 Mark V
A 21 mm polisher for big, flat panels on trucks, vans and boats, for professionals who already own a smaller machine for tight spots.
Amazon $594$594
21 mm500 W6 in
3.0/5
A light, brushless 15 mm polisher for professionals who want the newest motor tech and can live with a one-year warranty.
- 15 mmOrbit
- 2,700-8,700 OPMSpeed
- 1,200 WPower
- 1 yearWarranty
Check price at Amazon$499
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Brushless motor needs no brush changes
- Constant-speed electronics hold the pad speed under pressure
- Light at 5 lb
Cons
- One-year warranty on a $500 tool
- Expensive for a 15 mm polisher
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | FC3321-Z |
|---|---|
| Polishing | |
| Orbit diameter | 15 mm |
| Speed range | 2,700-8,700 OPM |
| Backing plate | 6 in |
| Forced rotation | No |
| Power | |
| Power source | Corded |
| Motor rating | 1,200 W |
| Cord | 19.7 ft |
| Brushless motor | Yes |
| Controls | |
| Constant-speed electronics | Yes |
| Soft start | Not listed |
| Lock-on trigger | Not listed |
| Build | |
| Weight | 5 lb |
| Pads or polish included | No |
| Warranty | 1 year |
Alternatives in this type
RUPES BigFoot LHR15 Mark V
The detailer’s benchmark 15 mm polisher, for professionals who polish every day and want a light tool with a long cord.
Amazon $552$552
15 mm500 W5 in
Adam's SK Pro 15mm
#10 in Corded long-throwFull review
A 15 mm polisher with a built-in inspection light, for enthusiasts who polish in a garage without good lighting.
Amazon $328.49$328.49
15 mm1,000 W5 in
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