R1 Front & Rear Semi-Metallic Brake Pads 2311-0827-00 are engineered for select 1999-2026 Chevrolet, GMC, and Isuzu applications. Part of the R1 Semi-Metallic Series, these pads use a durable semi-metallic friction formulation designed for dependable daily braking, strong wear resistance and consistent performance in colder operating conditions. Integrally molded, scorched friction material works with noise-control shim construction and positive molding to support reliable street braking. Mounting hardware is not included; required hardware reference HK1-47059 is sold separately.
Key Features & Specs:
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Brand: R1 Concepts
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Series: Semi-Metallic
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SKU: rnc2311-0827-00
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Part Number: 2311-0827-00
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Position: Front & Rear
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Material / Formulation: Semi-metallic formulation
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Recommended Use: Daily street driving
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Hardware: Not included
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UPC: 194873136567
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Required Hardware Reference: HK1-47059 — sold separately
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Quantity: 1 set
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Weight: 10.25 lb
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Vehicle Class: Medium/Heavy Truck / Truck
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Series Benefits: Durable daily braking, cold-condition suitability and rotor-friendly performance
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Construction: Integrally molded friction material
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Series Features: Copper-free and 100% asbestos-free; rubber-steel-rubber shim, friction underlayer, positive molding, scorched friction surface; slotted and chamfered where applicable
Fitment:
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Years: 1999-2026
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Makes: Chevrolet, GMC, Isuzu
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Models: LCF4500HD Diesel Engine, LCF 5500XG, LCF 4500HG, LCF4500XD Diesel Engine, LCF 5500HG, LCF5500HD Diesel, LCF5500XD Diesel, W4500 Tiltmaster - Front Disc Brakes, Gas Engine, LCF4500 Gas Engine, W5500 Tiltmaster, except HD - With Front Disc Brakes, W5500HD Tiltmaster, W5500HD Forward, W4500 Forward - Front Disc Brakes, Gas Engine, W5500 Forward, Except HD - Front Disc Brakes, NPR, NPR-HD - Gas Engine, NRR, NPR-XD, ELF (Mexico), NQR
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Brake Position: Front & Rear
R1 Semi-Metallic Brake Pads Series:
R1 Semi-Metallic Series Brake Pads are designed as durable, value-focused replacement pads for daily-driven passenger vehicles and light-duty trucks. The semi-metallic friction formulation provides consistent braking performance, dependable wear resistance and strong heat-handling characteristics, making the series especially well suited to everyday driving and colder operating conditions. The copper-free, 100% asbestos-free formulation is engineered to provide reliable braking while remaining rotor friendly.
R1 Semi-Metallic pads use integrally molded friction material with rubber-steel-rubber noise-control shim construction, a friction underlayer, positive molding and scorched friction surfaces. Pad shapes are slotted and chamfered where applicable. Exact pad quantity, mounting-hardware requirements, wear-sensor requirements and brake position vary by vehicle and should always be matched to the individual R1 part number. Pads-only applications do not include mounting hardware unless explicitly specified.
About R1 Concepts
R1 Concepts is one of those brands that proves quality brakes don't have to come with an expensive price tag. Based in California, R1 Concepts has over 20 years of experience in the automotive braking industry, offering dependable replacement parts and performance upgrades for just about every type of vehicle. From brake pads, rotors, and calipers to complete front, rear, and four-wheel brake kits, R1 Concepts has plenty of options to get your vehicle stopping right. Their popular eLINE Series offers affordable OE-style replacements, while the GEO-Carbon Series brings upgraded corrosion protection and performance-focused options to the table. Whether you're maintaining your daily driver, upgrading your weekend car, or getting your truck ready for towing, R1 Concepts has quality braking components that make sense for the money.
Let's face it, nobody wants to spend a small fortune every time their vehicle needs a brake job. You want parts that fit properly, perform reliably, and get you back on the road without unnecessary expenses. That's exactly why we love R1 Concepts here at Elite Race Fab. Their wide selection of affordable brake kits makes replacing worn-out components easier, with many kits including matched pads, rotors, and necessary hardware. From everyday ceramic brake pads to drilled and slotted performance rotors, R1 Concepts delivers solid options without the premium price tag. It's a brand we have no hesitation recommending to customers looking for dependable stopping power at a price that's hard to argue with. Sometimes you don't need to spend more; you just need to buy smart.
- R1 Series Brake Rotors: 1-year limited warranty against manufacturing defects and warping under normal use. Rotors must remain above their minimum thickness.
- R1 Series Brake Pads & Shoes: 30-day limited warranty against manufacturing defects.
- R1 Forged Series Big Brake Kits: 30-day limited warranty covering calipers, mounting brackets, brake lines and rotors. Brake pads and cosmetic finishes are excluded.
- R1 Stainless Steel Brake Lines: Limited lifetime warranty against manufacturing defects for as long as the original purchaser owns the original vehicle.
- Other Calipers, Master Cylinders, Wheel Cylinders, Brake Hoses, Hardware Kits, Drums & ABS Sensors: 1-year limited warranty against manufacturing defects.
Normal wear, noise, dust, corrosion, cosmetic damage, improper installation or bedding, misuse and damage caused by vehicle mechanical problems are excluded. Racing or track-related damage is not covered. Labor, shipping and related expenses are not covered.
Coverage is non-transferable, and proof of purchase is required. Warped rotor claims require an inspection report from a licensed, certified repair facility or dealership. Approved claims may receive repair, replacement or a refund at R1 Concepts’ discretion.
Contact Elite Race Fab for assistance with an R1 Concepts warranty inquiry.
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