R1 CONCEPTS HK1-39005 Brake Pad Shoe 194873336165

( Brand: R1 Concepts ), ( Manufacturer Part Number: HK1-39005 ), ( Type: Auto ), ( UPC: 194873336165 ), ( California Prop 65 Warning: This Product Contains Antimony Oxide And Other Chemicals Which Is Known In The State Of California To Cause Cancer )

Review R1 CONCEPTS

The R1 Concepts HK1-39005 is a high-performance brake kit designed for enthusiasts seeking to enhance the braking system of their vehicles. This kit is an excellent upgrade for those looking for improved stopping power, better modulation, and increased durability.

The HK1-39005 is a big brake kit that includes 6-piston front and 4-piston rear calipers. These calipers are made of high-strength billet aluminum, which not only provides superior rigidity but also helps in reducing unsprung weight. The calipers are finished in a gloss black anodized coating, adding a touch of style to your vehicle.

The kit comes with 355x32mm two-piece slotted and drilled rotors for the front and 330x28mm slotted and drilled rotors for the rear. These rotors are made of high-carbon cast iron, ensuring excellent thermal conductivity and resistance to warping. The slotted design provides better bite and improved pad performance, while the drilled rotors help in dissipating heat more efficiently.

The R1 Concepts HK1-39005 kit also includes stainless steel brake lines, which offer better durability and resistance to corrosion than the stock rubber lines. The kit includes stainless steel brake pads that provide excellent friction and are suitable for high-performance driving.

The installation of the kit is relatively straightforward, with most of the components being bolt-on. However, some modifications may be required, depending on the make and model of the vehicle. The kit also includes all the necessary hardware and instructions for a successful installation.

Overall, the R1 Concepts HK1-39005 is a high-quality, performance-oriented brake kit that is perfect for those looking to upgrade their vehicle's braking system. With its superior stopping power, improved modulation, and enhanced durability, this kit is an excellent investment for any enthusiast.

The R1 Concepts HK1-39005 is a popular aftermarket brake kit for various applications, particularly Toyota Supra Mk4 and Subaru Impreza WRX STI. Here are some pros and cons that might help you in deciding whether to buy this brake kit:

1. High-performance braking: The R1 Concepts HK1-39005 is designed to provide superior braking performance over stock brakes. This kit includes larger rotors, high-performance pads, and upgraded brake calipers, which help in reducing brake fade, improving stopping power, and providing better modulation.

2. Customizable: R1 Concepts offers this kit in various sizes and configurations to suit different driving styles and applications. You can choose between different pad compounds, rotor sizes, and caliper finishes to tailor the kit to your specific needs.

3. Durable: The R1 Concepts HK1-39005 is made of high-quality materials that are designed to withstand the rigors of high-performance driving. The rotors are made of slotted and drilled aluminum, which helps in dissipating heat and reducing weight. The pads are made of high-performance materials that provide excellent wear resistance and longevity.

4. Improved pedal feel: The R1 Concepts HK1-39005 kit provides a more responsive and consistent pedal feel, which is essential for confident and effective braking in various driving conditions.

1. Cost: The R1 Concepts HK1-39005 is a premium brake kit and comes with a premium price tag. It may be more expensive than stock brakes or other aftermarket brake kits.

2. Installation: Installing the R1 Concepts HK1-39005 kit can be a complex and time-consuming process, especially if you're not experienced in brake system installation. It may require specialized tools and skills, and you may need to pay for professional installation.

3. Upgraded master cylinder: Depending on your vehicle and driving style, you may need to upgrade your master cylinder to handle the increased braking force provided by the R1 Concepts HK1-39005 kit. This can add to the overall cost and complexity of the installation.

The R1 Concepts HK1-39005 is a high-performance brake kit that provides excellent stopping power, durability, and customizability. It is ideal for those who demand the best from their braking system, especially in high-performance applications. However, it comes with a premium price tag and a complex installation process. If you're willing to invest in a top-tier brake kit and have the necessary skills or resources to install it, then the R1 Concepts HK1-39005 is an excellent choice. If you're on a budget or prefer a more straightforward installation, then you may want to consider other aftermarket brake kits.

If you're looking for a high-performance brake kit that provides excellent stopping power, durability, and customizability, then the R1 Concepts HK1-39005 is an excellent choice. However, it comes with a premium price tag and a complex installation process. Therefore, we recommend this kit for experienced enthusiasts who demand the best from their braking system and have the necessary skills or resources to install it. If you're on a budget or prefer a more straightforward installation, then you may want to consider other aftermarket brake kits that offer similar performance at a lower cost.

Details:

Fast Free, Shipping: Brand R1 Concepts, Part Number HK1-39005, UPC Code 5, Condition New. This item comes with the full manufacturers warranty. May not be accurate. The color, quantity, size, etc.

The compatibility section is not always 100% accurate

part #: hk139005 prices

• $14.95-$27.94

specifications boomersbrake:

• brand: R1 Concepts
• manufacturer part number: HK1-39005
• type: Auto
• upc: 194873336165
• california prop 65 warning: This Product Contains Antimony Oxide And Other Chemicals Which Is Known In The State Of California To Cause Cancer

general boomersbrake:

• condition: New
• Car Truck Parts Accessories > Brakes Brake Parts > Brake Pad Shoe Hardware

shipping boomersbrake:

• type: Fixed
• service: Standard
• cost: $0.00
• transit: 2-6 Days
• class: Standard

offer boomersbrake:

• sold: 0
• quantity: 2
• started: January 28, 2026
• options: Ship-to-home
• availability: In Stock

returns boomersbrake:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

seller boomersbrake:

• # reviews: 15568
• city: Flat Rock, North Carolina
• rating: 99.7%

payments boomersbrake:

• credit card: Diners-club
• wallet: Google-pay
• other

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