Best Angle Grinders · Ridgid · Updated June 2026
Ridgid R86040B 18V X4 4-1/2 in. Cordless Angle Grinder (Tool Only): specs and price (2026)
Ridgid R86040B 18V X4 4-1/2 in. Cordless Angle Grinder (Tool Only) has a US price of $99 (Historical MSRP at Home Depot (tool only); discontinued/superseded). Below is its full, sourced spec sheet — every value links to the source and the date we captured it.
Specifications
| Price (US) | $99 Historical MSRP at Home Depot (tool only); discontinued/superseded |
|---|---|
| Brand | Ridgid |
| Released | — |
| disc size in | 4.5 in |
| power source | cordless |
| amps or voltage | 18 V |
| max rpm | 9000 |
| brushless | No |
| switch type | slide |
| no volt release | — |
| weight lb | 4.5 |
Source: homedepot.com (verified 2026-06-20) · corroborated by manualslib.com. CORRECTED: this is the older X4 series, which is a BRUSHED motor, not brushless. The draft's 'brushless: true' and the 'Brushless' in the name were a fabrication propagated from an incorrectly titled iFixit device page ('Ridgid Brushless R86040'); Home Depot's official R86040B listing and retailer specs confirm the X4 grinder is brushed. brushless set false, name/source corrected. 9,000 RPM and 18V confirmed in the official Ridgid R86040 operator's manual. Slide switch and 4.5 lb weight per retailer specs. No-volt release not documented.
Frequently asked questions
How much does the Ridgid R86040B 18V X4 4-1/2 in. Cordless Angle Grinder (Tool Only) cost?
The Ridgid R86040B 18V X4 4-1/2 in. Cordless Angle Grinder (Tool Only) has a US price of $99 (Historical MSRP at Home Depot (tool only); discontinued/superseded), as of 2026-06-20.
What are the Ridgid R86040B 18V X4 4-1/2 in. Cordless Angle Grinder (Tool Only)'s key specs?
Ridgid R86040B 18V X4 4-1/2 in. Cordless Angle Grinder (Tool Only) (Ridgid): disc size in 4.5 in, power source cordless, amps or voltage 18 V, max rpm 9000, brushless No. Full sourced spec sheet verified 2026-06-20.
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