Ridgid 18V Brushless R8657 Circular Saw
Circular Saw
$179

Ridgid

Ridgid 18V Brushless R8657 Circular Saw

4.5(380 reviews)

Ridgid's flagship 18V sidewinder replaced the Octane version in 2022 with a brushless motor that Pro Tool Reviews found genuinely capable of replacing a 15-amp corded saw — 35% faster cutting than its predecessor at 5,400 RPM. It checks every feature box (electric brake, LED with dust blower, rafter hook, vacuum-ready shoe) and undercuts the big pro brands at $179 bare, with Ridgid's registered Lifetime Service Agreement sweetening the deal.

Bare Tool
$179
Kit
$249
Platform
Ridgid 18V
Weight
8.8 lbs (bare tool)
Best for: Value-focused DIYers and remodelers who want near-pro performance plus Ridgid's registered lifetime service agreement covering batteries

Specifications

Category
Circular Saw
Battery Platform
Ridgid 18V
Voltage
18V
Motor
Brushless
Model
R8657B
Weight
8.8 lbs (bare tool)
Released
2022
Blade
7-1/4 in
No-Load Speed
5,400 RPM
Max Cut Depth (90°)
2-9/16 in
Bevel
56° (positive detent stops)

Features

Electric BrakeLED LightRafter Hook

Pros

  • Standout value — $179 bare or $249 with a 4.0Ah Max Output battery and charger, well under equivalent DeWalt/Milwaukee saws.
  • Registered Lifetime Service Agreement covers the tool AND batteries for life — free replacement packs is a perk no other brand matches.
  • Genuine 15-amp-corded-class power: Pro Tool Reviews (8.0/10) found it powers through cuts far easier than the old Octane and fit for professional work.
  • 2-9/16 in depth of cut at 90° and 1-7/8 in at 45° out-cuts most single-battery rivals and clears stacked 2x at square.
  • Full feature set with nothing missing: electric brake, LED light with dust blower, integrated rafter hook, and a vacuum port accepting 1-1/4 in and 1-3/4 in hoses.
  • 8.8 lbs bare is light for the power class, and the aluminum shoe holds up to jobsite abuse.
  • 56° bevel with positive detent stops covers rafter and stair stringer angles.
  • 4.5/5 across 380 Home Depot reviews, with owners repeatedly saying it 'mows through everything' the Octane stalled on — and it runs on every Ridgid 18V battery ever made.

Cons

  • Home Depot exclusive — one retailer controls pricing, stock, and clearance timing.
  • Needs Max Output 6.0/8.0Ah packs to deliver the corded-class claims; on small packs it bogs in dense material.
  • Pro Tool Reviews dinged the plastic lower blade guard as feeling flimsy next to metal-guard competitors.
  • The overmold grip has less cushion than the old Octane model.
  • 5,400 RPM trails the 6,000 RPM class leaders slightly in raw cut speed.
  • Lifetime Service Agreement requires registration within 90 days and isn't transferable — miss the window and you get only the 3-year warranty.
  • Ridgid's 18V line skews prosumer, so there's no track compatibility, connectivity, or rear-handle-style torque option in this saw.
  • Resale value on Ridgid tools is weak compared to the big pro platforms.

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