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 Griot's Garage G9 Random Orbital Polisher
A sourced, side-by-side comparison. Griot's Garage G9 Random Orbital Polisher is cheaper at $179.99. Every spec and price links to its source.
Griot's Garage
Griot's Garage G9 Random Orbital Polisher
$179.99Cheaper
Which is better: the RUPES BigFoot LHR21 Mark III Random Orbital Polisher or Griot's Garage G9 Random Orbital Polisher?
On the specs we track, they're closely matched. The Griot's Garage G9 Random Orbital Polisher is the cheaper at $179.99.
See RUPES BigFoot LHR21 Mark III Random Orbital Polisher on Amazon See Griot's Garage G9 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 | Griot's Garage G9 Random Orbital Polisher |
|---|---|---|
| US price | $490 | $179.99 Griot's Garage direct list price |
| Brand | RUPES | Griot's Garage |
| Released | 2018-11 | — |
| Orbit throw (mm) | 21 | 9 |
| Motor power | 500 W | 1000 W, 8.5 A |
| Speed range opm | 3,000-4,500 | 2,000-6,400 |
| Backing plate size (in) | 6 in | 6 in (converts to 5 in) |
| Variable speed | Yes | Yes |
| Action type | free-spin dual-action (random orbital, not gear-driven) | gear-driven dual-action (forced rotation) |
| Cord length (ft) | 30 | 10 |
| Weight (lb) | 5.95 | — |
Sources — RUPES BigFoot LHR21 Mark III Random Orbital Polisher: rupes.com (verified 2026-08-01). Griot's Garage G9 Random Orbital Polisher: griotsgarage.com (verified 2026-08-01).
What's the difference between the RUPES BigFoot LHR21 Mark III Random Orbital Polisher and Griot's Garage G9 Random Orbital Polisher?
Where the two actually differ on the specs we track (6 of 8). Matching specs are omitted.
- Orbit throw (mm): RUPES BigFoot LHR21 Mark III Random Orbital Polisher 21 vs Griot's Garage G9 Random Orbital Polisher 9
- Motor power: RUPES BigFoot LHR21 Mark III Random Orbital Polisher 500 W vs Griot's Garage G9 Random Orbital Polisher 1000 W, 8.5 A
- Speed range opm: RUPES BigFoot LHR21 Mark III Random Orbital Polisher 3,000-4,500 vs Griot's Garage G9 Random Orbital Polisher 2,000-6,400
- Backing plate size (in): RUPES BigFoot LHR21 Mark III Random Orbital Polisher 6 in vs Griot's Garage G9 Random Orbital Polisher 6 in (converts to 5 in)
- Action type: RUPES BigFoot LHR21 Mark III Random Orbital Polisher free-spin dual-action (random orbital, not gear-driven) vs Griot's Garage G9 Random Orbital Polisher gear-driven dual-action (forced rotation)
- Cord length (ft): RUPES BigFoot LHR21 Mark III Random Orbital Polisher 30 vs Griot's Garage G9 Random Orbital Polisher 10