Best R2 300x4 Deals of Nov 2026

Updated November 10, 2026Our site contains affiliate links for which we may be compensated.
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Rockford Fosgate

16% Off

Rockford Fosgate Prime R2-300X4 300-Watt 4-Channel Amplifier | Class-D, Extremely Efficient, Reduces Demand on the Vehicles Electrical System

The R2-300X4 full-range class-D 4-channel amplifier (1.9" x 6.8" x 10.1") is packed with features and performance to deliver power and bass on demand with 300 Watts of RMS power
Class D technology makes this amp extremely efficient by reducing demand on the vehicles electrical system (RMS Power: 50 Watts x 4 @ 4Ω OR 75 Watts x 4 @ 2Ω OR 150 Watts x 2 @ 4Ω Bridged/Mono)
Featuring C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass
Featuring fully adjustable 12 dB/octave high and low pass butterworth crossovers, balanced differential inputs with RCA pass through outputs, high level input capable, defeat able auto turn on circuit and top mounted controls
Famous Rockford Fosgate build quality with a full 1-year warranty
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Rockford Fosgate

15% Off

Rockford Fosgate Prime R2-500X4 500-Watt 4-Channel Amplifier | Class-D, Extremely Efficient, Reduces Demand on the Vehicles Electrical System

The R2-500X4 full-range class-D 4-channel amplifier (1.9" x 6.8" x 10.1") is packed with features and performance to deliver power and bass on demand with 500 Watts of RMS power
Class D technology makes this amp extremely efficient by reducing demand on the vehicles electrical system (RMS Power: 75 Watts x 4 @ 4Ω OR 155 Watts x 4 @ 2Ω OR 250 Watts x 2 @ 4Ω Bridged/Mono)
Featuring C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass
Featuring fully adjustable 12 dB/octave high and low pass Butterworth crossovers, balanced differential inputs with RCA pass through outputs, high level input capable, defeat able auto turn on circuit and top mounted controls
Famous Rockford Fosgate build quality with a full 1-year warranty
Details & specs
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on Amazon.com
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Rockford Fosgate

Rockford Fosgate PBR300X4 Punch BRT 300-Watt Ultra Compact 4-Channel Amplifier

Our ultra-compact (1.53” x 4.25” x 6.75”) Punch PBR300X4 is a full-range 4-channel amplifier designed for stereo front/rear systems that packs a Punch with 300 Watts of power without sucking a lot of juice from your electrical system
Designed to be compact and efficient while providing big power - RMS Power Output: 75 Watts x 4 @ 4-Ohm (4-Ohm only)
Featuring our Class BR, Rockford Fosgate’s patented Boosted Rail technology that sips current while retaining a storage reserve for extended bursts of power. Perfect for smaller stealth installations, motorcycles and recreational vehicles
Featuring high level inputs, MOSFET output stage, variable 4-6 volt hi level DC offset voltage input turn-on control, and 12dB/octave Butterworth crossover
Famous Rockford Fosgate build quality with a full 1-year warranty when purchased from an authorized Rockford Fosgate reseller
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Etnadn 4PCS Radiator Mount Bushing, 21507-4M400 21506-4M400 Rubber Bracket | Shock-Proof Radiator Parts, Reliable Buffering, Fit for Altima Murano Pathfinder Quest Rogue

Critical Function: This radiator bushing ensures stable positioning of the cooling unit keeping it securely in place during operation. By maintaining proper alignment it supports consistent engine temperature management and contributes to reliable overall vehicle performance
Quality Material: Crafted from premium rubber this mount bushing offers impressive durability and shock-absorbing qualities. It consistently delivers dependable performance even under demanding conditions ensuring steady operation and lasting reliability throughout its extended usage period
Package Includes: This complete kit includes 2 upper radiator mounting bushings and 2 lower radiator mounting bushings. Replacing worn components with this set helps maintain optimal vehicle stability and ensures your car continues to operate smoothly and reliably on the road
Easy Installation: Installing this radiator mounting bushing is a straightforward task that requires no specialized tools. Simply take out the old part and secure the new one in its place. Please verify your vehicle's specific model before purchasing to guarantee an accurate fit
Applicable Scope: This radiator bracket replaces OEM numbers 21506-4M400 and 21507-4M400. It offers broad compatibility across various vehicle models including Versa Cube NV200 Sentra Altima Quest Maxima Murano Pathfinder Rogue Select and Rogue ensuring a reliable fit for your needs
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VKQTS 30Ft X 4 Inch Carbon Fiber Wrap for Cars,Stylish Carbon Fiber Tape for Decorating Car Bodywork,Universal Self-Adhesive Car Accessories Exterior Pin Striping Tape for Cars (4In x 30Ft)

Stylish Carbon Fiber Design: Carbon fiber tape for cars uses classic carbon fiber design, stylish and elegant, use it to decorate all parts of body of your car, add sense of fashion and beauty for car, highlight your fashionable style, believe that carbon fiber enthusiasts will love
Excellent Material: Carbon fiber wrap for cars is made of PVC, good water resistant and sunscreen performance, can withstand harsh environment and keep stable performance, strong adhesion, not easy to peel off, not easy to produce air bubbles, and not easy to leave residual adhesive
Wide Use: Carbon vinyl wrap can not only be used to decorate the bodywork, but also be cleverly used to cover up bodywork scratches, if your car has some scratches or damages on surface that are not beautiful, you can stick it on scratches, and its strong adhesion allows for repeated use
Product Specification: Our car carbon fiber tape total size is 30 ft X 4 inch, which is enough to meet your needs, its overall size not unfolded is 4.00*2.15*2.15 inch, compact and lightweight, easy to store and carry, you can put it in trunk or any place, take it out and use it any time
Easy to Install: Installation is very simple, first clean the installation area to avoid water, dust and other impurities affecting the adhesion, slowly tear off our carbon fiber vinyl tape, then paste it, if used in winter, you can use a hair dryer to strengthen adhesion
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CouTunp 4PCS Car Bumper Sticker Magnets, 12 x 4 Inch Magnetic Bumper Stickers, Flexible Blank Car Magnets, Turn Any Decal Into a Strong Magnet, Cut to Size, Universal For Most Vehicle

Customization: With this magnetic car decal, you can freely cut any sticker, design, or decoration you like into any size or shape and turn it into a magnetic car decal. Easily create your own unique style and make your car stand out.
Magnetic Design: This custom bumper sticker features a highly flexible magnetic adhesive backing that conforms to the curves and contours of your vehicle with just a slight bend. Its strong magnetic force ensures a tight fit against the vehicle’s surface, providing optimal adhesion and withstanding the test of time even in harsh weather conditions.
Usage Instructions: These custom magnetic car decals come with a strong adhesive backing. Simply clean and dry the surface, peel off the backing, and apply. They can be removed without leaving any residue and will not damage the paintwork. This product is not suitable for glass, plastic, aluminum, or other non-ferromagnetic surfaces.
Wide Application: The magnetic bumper stickers measure 12 inches by 4 inches and are suitable for a wide range of vehicle types, including cars, sedans, trucks, vans, and SUVs. They can also be used to create advertising signs or cover company logos. You can also trim them to fit your specific needs.
Package Contents: This magnetic car decal set includes 4 x decals. With plenty of extras, it easily meets your daily use and replacement needs, allowing you to decorate multiple vehicles in various style.
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4PCS M10x1.0-35.4mm Brake Bleeder Screw,Brake Bleeder Valve with Dust Caps | Sturdy Carbon Steel,Dust-Proof Sealing,Secure & Stable Fit,Easy to Install,Car Essentials for Brake Maintenance

System Critical: Even though this part is compact, these speed bleeders for brake play a big role in your braking system. When the original bleeder gets worn, replacing it quickly helps keep your brake system working properly. This screw goes directly in place of the old one
Precise Size: These brake bleeder screws come M10x1.0-35.4 with a thread diameter of 10mm and a total length of 35.4mm. Before you order, take a moment to check the thread size on your original bleeder screw to keep you get the right match for your vehicle's caliper
Strong Sealing: These speed bleeder screws come with 4 protective caps which fit snugly over the bleeder hole. These caps helps block dirt, mud, and water from entering the system. The cap stays attached to the screw so you will not lose it during service work
Sturdy Material: These brake caliper bolts are made from carbon steel that resists bending and stripping under high torque. The threads stay clean and hold their shape through repeated installation and take off. You get a durable part that lasts through multiple brake services
4-Piece Set: This brake caliper bleeder screw kit includes 4 screws and 4 dust caps. You get enough for a full replacement job with extras left over for your toolbox. Having spares on hand means you are ready for future brake work without making another trip
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Judsocu 4 PCS Car Mud Flaps, 10.03" x 7.09" x 2.95" Thickened Splash-Proof Front Rear Splash Guards, Scratch-Resistant Waterproof Protective Shield Kit, for Sedans (Black)

High-quality Material: These car mud flaps are made of PP plastic and are impact-resistant; they do not soften or age when exposed to intense summer heat, nor do they become hard, brittle, or crack in cold winter temperatures, and they are resistant to bending and warping during long-term outdoor use.
Splash and Debris Protection: These mud guards create a physical barrier between your tires and the vehicle body, blocking mud, water spray, gravel, road salt, and small stones from being thrown against the paintwork and undercarriage components.
Flexible Fit: These mud flaps provide optimal coverage; their curved, waterproof design forms a complete barrier without affecting the vehicle's ground clearance. The streamlined shape blends seamlessly with the body, creating a visually harmonious look.
Wide Application: These mud flaps feature a universal design suitable for most passenger cars, measuring 10.03 inches x 7.09 inches x 2.95 inches. They can be trimmed as needed to ensure a precise fit against your vehicle's contours. The complete set includes mud flaps for all four wheels (front and rear), 8 screws, and a wrench—a practical protective accessory for your everyday driving needs.
Easy Installation: Installation is simple and includes matching mounting screws. Install directly using the vehicle's existing mounting holes—no drilling or cutting required. Simply align the holes and tighten the screws to secure them in place.
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Our #1 Pick Today
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Rockford Fosgate

16% Off

Rockford Fosgate Prime R2-300X4 300-Watt 4-Channel Amplifier | Class-D, Extremely Efficient, Reduces Demand on the Vehicles Electrical System

The R2-300X4 full-range class-D 4-channel amplifier (1.9" x 6.8" x 10.1") is packed with features and performance to deliver power and bass on demand with 300 Watts of RMS power
Class D technology makes this amp extremely efficient by reducing demand on the vehicles electrical system (RMS Power: 50 Watts x 4 @ 4Ω OR 75 Watts x 4 @ 2Ω OR 150 Watts x 2 @ 4Ω Bridged/Mono)
Featuring C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass
Featuring fully adjustable 12 dB/octave high and low pass butterworth crossovers, balanced differential inputs with RCA pass through outputs, high level input capable, defeat able auto turn on circuit and top mounted controls
Famous Rockford Fosgate build quality with a full 1-year warranty
Details & specs
Check Price
on Amazon.com
Disclaimer: While we make every effort to ensure accuracy, we cannot guarantee that all product specifications, pricing, discounts, and details are complete or error-free. Because information is subject to change, we recommend verifying all details directly with the retailer prior to making a purchase. As an Amazon Associate, we earn from qualifying purchases.

9 R2 300x4 deals are available from: Amazon, starting from $4.99.

The biggest discount we found is 24% on Alpine R2-A60F R-Series 4-Channel Amplifier - 150W x 4 at 2-Ohm, Hi-Res Certified (R2-A60F) at Amazon.

The lowest price we found is $4.99 while the highest is $411.00. Prices for the best R2 300x4 deals average at $148.99.