BMR Suspension Polyurethane Motor Mount Kit

2011–2023 Chrysler 300, Dodge Challenger, Dodge Charger 5.7L Hemi, 6.2L Hellcat, 6.4L 392

Part #: MM110

Overview

The BMR Suspension Polyurethane Motor Mount Kit (MM110) is engineered to significantly reduce engine deflection in your Chrysler 300, Dodge Challenger, or Dodge Charger equipped with 5.7L Hemi, 6.2L Hellcat, or 6.4L 392 engines from 2011 through 2023. Factory motor mounts often allow excessive engine movement, which can lead to sluggish throttle response, delayed reaction times, and imprecise shifting in manual transmission vehicles. This kit is designed for enthusiasts seeking improved street performance, drag racing capability, and road racing precision by providing a firmer, more controlled engine mounting solution.

Whether you’re upgrading your muscle car for spirited street driving or competitive motorsports, the BMR Polyurethane Motor Mount Kit offers a durable and effective way to enhance your vehicle’s overall driving dynamics.

Key Features

Built to deliver superior engine stability and performance, this motor mount kit includes:

• Fits 2011–2023 Dodge Charger, Dodge Challenger, and Chrysler 300 models with 5.7L Hemi, 6.2L Hellcat, and 6.4L 392 engines
• Constructed from laser-cut 1/4-inch steel plate for maximum strength and durability
• Black-anodized 6061-T6 aircraft-grade billet aluminum spacers for lightweight rigidity and corrosion resistance
• 95-durometer polyurethane bushings engineered to reduce engine deflection without excessive harshness
• Includes Grade 8 hardware to ensure secure, long-lasting installation
• Reduces engine movement to improve throttle response and quicken reaction times
• Minimizes changes in noise, vibration, and harshness (NVH) for a balanced driving experience
• Allows for more accurate shifts in manual transmission-equipped vehicles
• Can lower the engine up to 1/2-inch, increasing under-hood clearance for aftermarket components
• Finished in black anodizing for a sleek appearance and long-lasting corrosion protection

Construction & Design

This motor mount kit is meticulously crafted using laser-cut 1/4-inch steel plates that provide a robust foundation to withstand the rigors of high-performance driving. The use of black-anodized 6061-T6 aircraft-grade billet aluminum spacers adds strength while keeping weight to a minimum. The 95-durometer polyurethane bushings strike an ideal balance between stiffness and compliance, effectively controlling engine movement without transmitting excessive vibration to the chassis.

Every component is designed and manufactured in the USA, ensuring quality craftsmanship and attention to detail. The black anodized finish not only enhances durability but also complements the engine bay’s aesthetics.

Performance & Sound

By significantly reducing engine deflection, the BMR Polyurethane Motor Mount Kit improves throttle response and sharpens vehicle reaction times, especially noticeable in manual transmission applications where precise shifting is critical. The firmer mounting reduces unwanted engine movement under acceleration and cornering, translating to a more connected and responsive driving experience. While the polyurethane bushings are stiffer than factory rubber mounts, they are engineered to minimize increases in noise and vibration, maintaining a comfortable ride for street use.

Installation & Fitment

Installation of the BMR Polyurethane Motor Mount Kit typically requires 2 to 3 hours and is designed to be a direct bolt-in replacement for factory mounts on compatible vehicles. No major modifications are necessary, and the kit includes all required Grade 8 hardware for a secure fit. The design allows the engine to be lowered up to 1/2-inch, which can provide additional clearance for aftermarket intake systems, headers, or other under-hood components.

This kit fits the following vehicles and engine combinations:

• 2011–2023 Chrysler 300 5.7L Hemi and 6.4L 392
• 2011–2023 Dodge Challenger 5.7L Hemi, 6.2L Hellcat, and 6.4L 392
• 2011–2023 Dodge Charger 5.7L Hemi, 6.2L Hellcat, and 6.4L 392

What's Included

• Laser-cut 1/4-inch steel motor mount plates
• Black-anodized 6061-T6 billet aluminum spacers
• 95-durometer polyurethane bushings
• Grade 8 mounting hardware
• Detailed installation instructions

Ideal For

This motor mount kit is ideal for muscle car enthusiasts and performance drivers who demand improved throttle response, quicker shifting, and enhanced engine stability. It suits street performance upgrades, drag racers seeking better power transfer, and road racers requiring precise engine control. The kit is especially beneficial for manual transmission vehicles where engine movement can negatively impact shift quality and driver feedback.

BMR Suspension specializes in heavy-duty performance suspension and chassis parts built for high-load street and race use—especially for muscle car and drag-focused applications. Their lineup includes control arms, panhard bars, K-members, sway bars, and other reinforcements designed to improve traction, stability, and repeatability when you’re launching hard, cornering harder, or simply building a more planted, capable setup.