HomeBrake > Disc Pads and Brake ShoesR1 Concepts 2551-2308-00 Disc Brake Pad Set - Rear
Part #: 2551-2308-00

R1 Concepts 2551-2308-00 Disc Brake Pad Set - Rear

R1 Optimum Oe Pads, Rear
⚙️ 13 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦R1 Optimum Oe Pads, Rear
🚗Fitment: Buick and Chevrolet, Encore GX and Trailblazer
🔄Easy Returns — Return within 60 days for a full refund
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Rear Brake Pads for Buick Encore GX and Trailblazer

R1 Concepts R1 Optimum OE Pads, part number 2551-2308-00, are rear disc brake pads for select Buick Encore GX and Chevrolet Trailblazer applications. This pad set is built for drivers who need a direct-fit rear brake service part with vehicle-specific coverage.

Key Features

  • Rear disc brake pad set for select compact SUV applications
  • Compatible with 2020-2026 Buick Encore GX, rear
  • Compatible with 2021-2025 Chevrolet Trailblazer, rear
  • Compatible with 2026 Chevrolet Trailblazer, rear
  • R1 Optimum OE Pads product line from R1 Concepts
  • Part number 2551-2308-00 for fitment-based lookup

Product Details

The R1 Optimum OE Pads line focuses on OE-style replacement coverage for everyday brake service. This rear disc brake pad set is listed for the Buick Encore GX and Chevrolet Trailblazer, with fitment spanning 2020-2026 Buick Encore GX rear and 2021-2026 Chevrolet Trailblazer rear applications. Use part number 2551-2308-00 when confirming the correct rear pad set for your vehicle.

Common Brake Service Issues

  • Rear brake pad wear requiring replacement
  • Squealing or noise from worn rear pads
  • Reduced braking performance from thin friction material
  • Uneven rear brake response during routine service
  • Brake inspection findings calling for rear pad replacement

Installation Notes

Verify rear axle fitment before ordering. For 2020-2026 Buick Encore GX rear applications and 2021-2025 Chevrolet Trailblazer rear applications, one fitment note specifies sensor BPS-45001 (1) is required. Confirm the sensor requirement on the vehicle before installation. This part number, 2551-2308-00, should be matched to the rear position only.

Quality Assurance

R1 Concepts markets the R1 Optimum OE Pads line as an OE-style brake pad offering for direct replacement service. Confirm vehicle fitment by year, make, model, and rear position before purchase.

This part fits 13 vehicles. Search below:

YearMakeModelPositionNotes
2026BuickEncore GXRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2026ChevroletTrailblazerRearR1 Optimum Oe Pads
2025BuickEncore GXRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2025ChevroletTrailblazerRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2024BuickEncore GXRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2024ChevroletTrailblazerRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2023BuickEncore GXRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2023ChevroletTrailblazerRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2022BuickEncore GXRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2022ChevroletTrailblazerRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2021BuickEncore GXRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2021ChevroletTrailblazerRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads
2020BuickEncore GXRearReq Sensor BPS-45001 (1); R1 Optimum Oe Pads

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.