RUPES
RUPES BigFoot LHR21 Mark III Random Orbital Polisher
$490
Released 2018-11
Best Car Polishers · head-to-head
RUPES BigFoot LHR21 Mark III Random Orbital Polisher vs Flex XFE 7-15 150 Random Orbital Polisher
A sourced, side-by-side comparison. Flex XFE 7-15 150 Random Orbital Polisher is cheaper at $425. Every spec and price links to its source.
No photo yet
Flex
Flex XFE 7-15 150 Random Orbital Polisher
$425Cheaper
Which is better: the RUPES BigFoot LHR21 Mark III Random Orbital Polisher or Flex XFE 7-15 150 Random Orbital Polisher?
The RUPES BigFoot LHR21 Mark III Random Orbital Polisher wins 1 of the 1 specs we compare head to head; the other wins 0. The Flex XFE 7-15 150 Random Orbital Polisher is the cheaper at $425. Get the RUPES BigFoot LHR21 Mark III Random Orbital Polisher for the stronger spec sheet, the Flex XFE 7-15 150 Random Orbital Polisher to spend less.
See RUPES BigFoot LHR21 Mark III Random Orbital Polisher on Amazon See Flex XFE 7-15 150 Random Orbital Polisher on Amazon
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | RUPES BigFoot LHR21 Mark III Random Orbital Polisher | Flex XFE 7-15 150 Random Orbital Polisher |
|---|---|---|
| US price | $490 | $425 |
| Brand | RUPES | Flex |
| Released | 2018-11 | — |
| Orbit throw (mm) | 21 | 15 |
| Motor power | 500 W | 710 W |
| Speed range opm | 3,000-4,500 | 3,000-9,000 |
| Backing plate size (in) | 6 in | 6 in |
| Variable speed | Yes | Yes |
| Action type | free-spin dual-action (random orbital, not gear-driven) | free-spin dual-action (random orbital, not gear-driven) |
| Cord length (ft) | 30 | — |
| Weight (lb) | 5.95 | 8.8 |
Sources — RUPES BigFoot LHR21 Mark III Random Orbital Polisher: rupes.com (verified 2026-08-01). Flex XFE 7-15 150 Random Orbital Polisher: flexpowertools.com (verified 2026-08-01).
What's the difference between the RUPES BigFoot LHR21 Mark III Random Orbital Polisher and Flex XFE 7-15 150 Random Orbital Polisher?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- Orbit throw (mm): RUPES BigFoot LHR21 Mark III Random Orbital Polisher 21 vs Flex XFE 7-15 150 Random Orbital Polisher 15
- Motor power: RUPES BigFoot LHR21 Mark III Random Orbital Polisher 500 W vs Flex XFE 7-15 150 Random Orbital Polisher 710 W
- Speed range opm: RUPES BigFoot LHR21 Mark III Random Orbital Polisher 3,000-4,500 vs Flex XFE 7-15 150 Random Orbital Polisher 3,000-9,000
- Weight (lb): RUPES BigFoot LHR21 Mark III Random Orbital Polisher 5.95 vs Flex XFE 7-15 150 Random Orbital Polisher 8.8