Raybestos 582743R Disc Brake Rotor - Rear
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Raybestos
Raybestos R-Line

Raybestos 582743R Disc Brake Rotor - Rear

Brand Raybestos 582743R
Position Rear
Material Cast iron
Discard Thickness 0.8
Discard Thickness 21.0
Nominal Thickness 0.9
Nominal Thickness 23.2
Maximum Brake Diameter (Discard) 334.3
Construction Full cast
Rust Resistant Coating Yes
Inside Diameter 247.0
Inside Diameter 9.7
Overall Height 3.3
Overall Height 82.6
Outside Diameter 13.2
Outside Diameter 334.3
Mounting Bolt Hole Quantity 6
Grade Type Regular
ABS Tone Ring Included No
Solid Or Vented Type Rotor Vented
Bearings Included No
Center Hole Diameter 2.8
Center Hole Diameter 71.0
Mounting Bolt Hole Circle Diameter 120.0
Mounting Bolt Hole Circle Diameter 4.7
Mounting Bolt Hole Diameter 0.6
Mounting Bolt Hole Diameter 16.0
Stud/Lug Hole Quantity 6
Stud/Lug Hole Diameter 0.628
Stud/Lug Hole Diameter 15.95
Directional or Non-Directional Brake Surface Non-directional
Conventional Or Drum-In-Hat Type Rotor Drum-in-hat
Product line Raybestos R-Line
Fits Chevrolet and GMC · 4 vehicles

Full cast construction. Cast iron rotor with a rust-resistant coating for dependable braking performance.

Vented design. Helps air flow through the rotor for more consistent heat management.

Non-directional surface. Promotes even pad contact and smoother braking feel.

Cross-references Centric Parts 120.66090, DuraGo BR901938 and DuraGo BR901938-01 for the same application. See all 12.

$64.15Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Disc Brake Rotors are typically replaced in pairs, axle by axle.
Order total $64.15
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Disc Brake Rotor options

Rear Brake Rotor for Colorado and Canyon

Raybestos R-Line 582743R is a rear disc brake rotor built for 2021-2022 Chevrolet Colorado and 2021-2022 GMC Canyon applications. This vented, full cast iron rotor uses a rust resistant coating and a non-directional brake surface to support consistent braking performance and straightforward service work.

Raybestos R-Line Rotor Features

  • Part number 582743R
  • Rear disc brake rotor for select Chevrolet Colorado and GMC Canyon models
  • Full cast construction in cast iron
  • Vented rotor design
  • Rust resistant coating
  • Non-directional brake surface
  • 6-lug mounting pattern with 120.0 mm bolt circle diameter
  • Outside diameter: 334.3 mm (13.2 in.)
  • Nominal thickness: 23.2 mm (0.9 in.)
  • Discard thickness: 21.0 mm (0.8 in.)
  • Center hole diameter: 71.0 mm (2.8 in.)
  • Overall height: 82.6 mm (3.3 in.)

Product Details

Raybestos R-Line focuses on dependable replacement brake components for everyday service needs. The 582743R rear rotor is a drum-in-hat style rotor with a vented design, regular grade construction, and a non-directional surface finish that supports rotor preparation and brake pad bedding. For shoppers searching for a rear brake rotor for 2021-2022 Chevrolet Colorado or 2021-2022 GMC Canyon, this part number provides the key dimensions and mounting specs needed for a direct application match.

This part cross-references Centric Parts 120.66090 for the same application.

Common Replacement Reasons

  • Rear brake pulsation from rotor wear or thickness variation
  • Brake noise caused by uneven rotor surfaces
  • Corrosion on the braking surface or rotor hat area
  • Reduced braking consistency from heat-related rotor wear
  • Service replacement for a worn rear disc brake rotor

Installation Notes and Tips

Verify rotor dimensions, hub fitment, and bolt pattern before installation. Clean the hub mounting surface thoroughly to help prevent runout issues, and inspect pads, calipers, and hardware condition during brake service. Proper bedding procedures after installation help the new rotor and pads seat evenly.

Quality Assurance

Raybestos R-Line brake components are built as regular-grade replacement parts with application-specific dimensions and corrosion protection features. Confirm fitment by vehicle year, make, model, and rear position before ordering.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2022ChevroletColoradoRearRaybestos R-Line
2022GMCCanyonRearRaybestos R-Line
2021ChevroletColoradoRearRaybestos R-Line
2021GMCCanyonRearRaybestos R-Line
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Centric Parts — 120.66090DuraGo — BR901938DuraGo — BR901938-01Dynamic Friction Company — 604-470891427-10671872502DL72502SD572508RGS667250884309171TN582743GEOYH106716P