ERS 1000HP Evo 4–9 RS Rear Differential Conversion Kit

Description

ERS 1000HP RS Rear Differential Conversion Kit for Mitsubishi Lancer Evolution 4–9

Take your Mitsubishi Lancer Evolution’s rear drivetrain to the next level with the ERS 1000HP Evo 4–9 RS Rear Differential Conversion Kit. Developed for serious high-power applications, this conversion kit is designed to provide the components needed to convert the rear differential setup to an RS-style configuration while offering the strength and support required for extreme-performance Evolution builds.

With an advertised 1000HP application, this kit is aimed at enthusiasts building powerful street cars, dedicated track machines, drag cars, rally vehicles, time-attack builds, and other high-output AWD Evolution projects.

The rear differential is one of the most heavily loaded components in an AWD performance vehicle. As engine power and torque increase, the differential, mounting points, bushes, subframe, driveshafts, axles, and associated hardware are exposed to substantially greater forces. A properly engineered RS conversion is therefore an important part of creating a dependable high-power drivetrain.

Product Details

• Brand: ERS
• Product: RS Rear Differential Conversion Kit
• Application: Mitsubishi Lancer Evolution
• Fitment: Evolution 4 / 5 / 6 / 7 / 8 / 9
• Configuration: RS rear differential conversion
• Application Rating: Up to 1000HP
• Position: Rear drivetrain
• Purpose: RS differential conversion and mounting
• Ideal for: High-power, track, drag, rally, motorsport, and performance builds

Designed for Evo 4–9

The ERS 1000HP RS Rear Differential Conversion Kit is designed around the Mitsubishi Lancer Evolution 4 through 9 platform.

These generations of Evolution are renowned for their sophisticated AWD systems and enormous tuning potential. As power levels climb, however, the factory drivetrain and differential mounting arrangements can become increasingly important areas to address.

This kit provides an upgrade path for enthusiasts looking to move to an RS-style rear differential configuration while preparing the rear drivetrain for substantially increased power output.

RS Differential Conversion

The RS-specification Evolution uses a different rear differential arrangement from many AYC-equipped models. For owners building a performance-oriented Evolution, converting to an RS differential can be an attractive option depending on the intended use and drivetrain configuration.

An RS conversion involves more than simply installing a different differential. The correct mounting arrangement and supporting components are essential to ensure the differential is properly located within the rear assembly.

The ERS conversion kit is designed to address the requirements of this type of conversion and provide a suitable foundation for a high-power RS rear drivetrain.

Built for Serious Power

At an advertised 1000HP application, this kit is targeted at Evolution builds operating at a level far beyond standard factory specifications.

At this power level, drivetrain reliability becomes a major consideration. Engine power must be transferred through the transmission, transfer case, driveshaft, rear differential, axles, hubs, and tyres. Every component must work together as part of a properly engineered system.

The rear differential mounting arrangement is an important part of that system.

A correctly installed RS conversion can help provide the appropriate foundation for the rear differential while complementing other high-performance drivetrain upgrades.

Suitable for Multiple Evolution Generations

Designed for applications across:

• Mitsubishi Lancer Evolution IV / Evo 4
• Mitsubishi Lancer Evolution V / Evo 5
• Mitsubishi Lancer Evolution VI / Evo 6
• Mitsubishi Lancer Evolution VII / Evo 7
• Mitsubishi Lancer Evolution VIII / Evo 8
• Mitsubishi Lancer Evolution IX / Evo 9

This wide application range makes the ERS kit a useful solution for enthusiasts working on a variety of classic and modernized Evolution builds.

Whether you’re restoring an Evo 4, upgrading an Evo 6 rally-style build, converting an Evo 8, or developing a high-powered Evo 9, the kit is intended to support the RS rear differential conversion process.

Ideal for High-Performance Builds

This kit is particularly suited to vehicles such as:

• 1000HP Evolution builds
• High-torque AWD street cars
• Drag racing Evolutions
• Time attack cars
• Track vehicles
• Rally builds
• Motorsport projects
• Competition cars
• AYC-to-RS conversions
• High-power GSR conversions
• Full drivetrain rebuilds
• Extreme OEM+ performance builds

For vehicles producing significant power, upgrading the rear differential mounting system alongside the differential itself can be an important part of building a reliable drivetrain.

Strengthen the Rear Drivetrain

As power increases, drivetrain movement and mounting loads become increasingly important.

During hard acceleration and launches, torque is transferred through the differential and into the surrounding mounting structure. High-grip tyres can further increase the forces experienced by drivetrain components because they allow more of the engine’s torque to be transferred directly into the chassis and driveline.

A properly designed RS conversion provides the correct mounting arrangement for the selected differential and helps create a solid foundation for the rear drivetrain.

For a serious high-power Evolution, this should be considered alongside upgrades to the transmission, transfer case, driveshaft, axles, hubs, clutch, and other drivetrain components.

Excellent for Complete Drivetrain Rebuilds

The best time to install a conversion kit is often when the rear drivetrain is already being dismantled.

During a full rebuild, owners can inspect the rear subframe, differential, mounting points, bushes, driveshafts, axles, and associated hardware before reassembly.

Installing the conversion components at this stage can make the overall project more efficient and ensures that the rear drivetrain is being built as a complete system rather than upgrading individual components in isolation.

Ideal for AYC-to-RS Conversions

Many Evolution owners choose an RS differential conversion as part of a performance or motorsport build.

An AYC-to-RS conversion can involve several components and should be approached as a complete drivetrain modification. The correct differential, mounting system, supporting hardware, and associated drivetrain components must all be compatible.

The ERS 1000HP conversion kit is designed for enthusiasts undertaking this type of project and provides an important part of the RS conversion package.

1000HP Application

The 1000HP rating makes this kit particularly appealing to owners building extreme-performance Evolution models.

However, horsepower alone does not determine drivetrain loads. Torque delivery, vehicle weight, tyre compound, traction, launch technique, transmission configuration, differential condition, and driving environment all have a significant impact on component stress.

For this reason, the 1000HP designation should be treated as an application/reference rating and not a guarantee that every drivetrain component will safely withstand 1000HP.

A 1000HP Evolution should be built with the entire drivetrain properly matched to the intended power level and use.

Important Fitment Information

Please verify your vehicle’s exact Evolution generation, rear differential type, subframe configuration, and existing drivetrain arrangement before ordering.

Evolution 4–9 models were produced in multiple specifications, and many vehicles have been modified over the years. RS and AYC configurations have different requirements, so compatibility should always be confirmed before installation.

If your vehicle has previously undergone a drivetrain conversion, carefully inspect the existing mounting arrangement and compare it with the required RS configuration.

Professional Installation Recommended

Because this is a drivetrain conversion component, professional installation is recommended.

Before installation, inspect the rear differential, subframe, mounting points, fasteners, bushes, driveshafts, axles, and surrounding chassis for damage or excessive wear.

All components should be correctly aligned and installed using appropriate hardware and manufacturer-recommended torque specifications.

On extreme-power vehicles, the complete drivetrain should be inspected and engineered as a system rather than relying on one upgraded component to handle the entire power increase.

Key Benefits

• Designed for Mitsubishi Lancer Evolution 4–9
• RS rear differential conversion application
• Intended for high-power builds up to a 1000HP application
• Ideal for AYC-to-RS conversions
• Suitable for high-torque AWD vehicles
• Excellent for drag, track, rally, and motorsport builds
• Useful during complete rear drivetrain rebuilds
• Provides the foundation for a performance-focused RS differential setup
• Ideal for serious Evolution enthusiasts
• Suitable for heavily modified street and competition vehicles

Build Your Evo for Extreme Performance

The ERS 1000HP Evo 4–9 RS Rear Differential Conversion Kit is designed for owners who are pushing their Mitsubishi Evolution well beyond factory performance levels.

From a high-powered street car to a dedicated 1000HP AWD build, converting to an RS rear differential configuration requires careful attention to the differential mounting system and surrounding drivetrain components.

With its focus on the Evolution 4–9 platform and high-power RS applications, this ERS conversion kit is an excellent choice for enthusiasts undertaking a serious rear drivetrain upgrade.

ERS 1000HP Evo 4–9 RS Rear Differential Conversion Kit — designed for Mitsubishi Lancer Evolution 4, 5, 6, 7, 8 and 9 RS differential conversion applications and serious high-power AWD builds.