Designed for enthusiasts performing an automatic-to-manual transmission swap, the Innovative Mounts 90652 provides the mounting components necessary to properly position a compatible K-Series engine and manual transmission in an Acura RSX originally equipped with an automatic transmission.

Converting an automatic Acura RSX to a manual transmission requires more than simply replacing the transmission. Differences between factory automatic and manual drivetrain mounting configurations can require specialized brackets and mounting components to achieve proper engine and transmission alignment.

The Innovative Mounts 90652 addresses these mounting differences with a purpose-built conversion system featuring durable steel mounts, a conversion-specific transmission-side bracket, and performance polyurethane bushings.

Unlike factory rubber mounts, Innovative Mounts' polyurethane bushings are designed to reduce excessive engine movement during acceleration, deceleration, and shifting. This firmer mounting arrangement helps improve drivetrain stability, reduce unwanted engine rocking, and provide a more connected driving experience.

Featuring a durable powder-coated finish, Innovative Mounts' no-tear polyurethane bushing design, and multiple bushing hardness options, the 90652 is an excellent solution for street-driven RSX manual conversions, naturally aspirated K20 performance builds, and dedicated motorsport applications.

Important: Part number 90652 is designed specifically for converting an automatic-transmission Acura RSX to a manual transmission. It is not intended for vehicles retaining their factory automatic transmission or for vehicles already equipped with a factory manual transmission.

Features

• Automatic-to-Manual Conversion Design: Engineered specifically for manual transmission swaps in originally automatic Acura RSX models.

• 2002–2006 Acura RSX Compatibility: Designed for the DC5 chassis.

• Honda K-Series Engine Compatibility: Supports compatible K-Series engine and manual transmission configurations.

• Conversion-Specific Transmission Bracket: Includes the specialized mounting bracket required for the automatic-to-manual conversion.

• Three Primary Mounting Positions: Provides driver-side, passenger-side, and rear drivetrain mounting components.

• Durable Steel Construction: Designed to withstand demanding street and performance applications.

• Powder-Coated Finish: Helps protect mounting components against corrosion.

• Performance Polyurethane Bushings: Provide increased resistance to drivetrain movement compared with factory rubber mounts.

• No-Tear Bushing Design: Engineered to control excessive engine movement while retaining some vibration isolation.

• Improved Drivetrain Stability: Helps minimize unwanted engine and transmission movement.

• Reduced Mount Deflection: Maintains more consistent drivetrain positioning under load.

• Improved Driving Response: Firmer mounting can provide a more direct drivetrain feel.

• Potential Wheel Hop Reduction: Reduced excessive drivetrain movement may help minimize wheel hop during aggressive acceleration.

• Multiple Bushing Hardness Options: Available in 75A, 85A, and 95A configurations.

• Street and Racing Applications: Suitable for properly configured daily-driven, autocross, road racing, and drag racing builds.

• Lifetime Warranty: Backed by Innovative Mounts' lifetime warranty, subject to manufacturer terms.

Popular Performance Applications

Acura RSX Automatic-to-Manual Transmission Swaps

The primary application for the Innovative Mounts 90652. Provides the necessary mounting arrangement for installing a compatible manual transmission in an originally automatic DC5 chassis.

RSX Base K20A3 Manual Conversions

Ideal for enthusiasts retaining the factory K20A3 engine while upgrading from the automatic transmission to a manual gearbox.

RSX Type-S Drivetrain Conversions

Suitable for properly configured builds incorporating compatible Type-S manual drivetrain components into an originally automatic RSX chassis.

Naturally Aspirated K-Series Builds

An excellent mounting solution for manual-converted RSX vehicles equipped with intake, exhaust, camshaft, and other naturally aspirated performance upgrades.

Turbocharged K-Series Applications

Helps control excessive drivetrain movement in properly configured forced-induction builds.

Street Performance Builds

The 75A bushing option provides a balance between improved drivetrain stability and vibration isolation.

Autocross and Road Racing

Reduced mount deflection helps maintain more consistent drivetrain positioning during acceleration, braking, and cornering.

Drag Racing Applications

Firmer polyurethane bushings help resist excessive drivetrain movement during aggressive launches.

Additional Information

• Manufacturer: Innovative Mounts
• Part Number: 90652
• Product Type: Automatic-to-Manual Conversion Engine Mount Kit
• Vehicle Application: 2002–2006 Acura RSX
• Chassis Compatibility: DC5
• Engine Compatibility: Honda K-Series
• Original Transmission: Automatic
• Conversion Transmission: Compatible K-Series Manual
• Mount Construction: Steel
• Finish: Powder-Coated
• Bushing Material: Performance Polyurethane
• Available Bushing Hardness Options: 75A / 85A / 95A
• Mounting Configuration: Three Primary Mounting Positions with Conversion Bracket and Engine-Side Post Mount
• Driver-Side Mount: Innovative Mounts 90611
• Driver-Side Conversion Bracket: Innovative Mounts 40610-SB
• Passenger-Side Mount: Innovative Mounts 90620
• Passenger-Side Post Mount: Innovative Mounts B90621
• Rear Engine Mount: Innovative Mounts 90630
• Factory Manual Replacement Kit Alternative: Innovative Mounts 90650
• Factory Automatic Replacement Kit Alternative: Innovative Mounts 90651
• Manufacturer-Listed Weight: Approximately 15 lbs
• Warranty: Manufacturer Lifetime Warranty, Subject to Terms

Available Polyurethane Bushing Hardness Options

75A – Black – Street / Performance

The softest available bushing option for the 90652.

Recommended for street-driven Acura RSX manual conversions where improved drivetrain stability is desired without excessive vibration.

Manufacturer horsepower guidance: approximately 250–400 HP.

85A – Grey – Performance / Race

Provides increased drivetrain rigidity for modified engines, aggressive driving, and competition applications.

Manufacturer horsepower guidance: approximately 400–500 HP.

95A – Red – Extreme Race

The stiffest available polyurethane option, intended for high-output engines and dedicated racing applications.

Manufacturer horsepower guidance: 500+ HP.

These horsepower ranges are general manufacturer selection guidelines rather than guaranteed load ratings or minimum horsepower requirements.

Important: Increasing bushing hardness generally increases noise, vibration, and harshness transmitted into the vehicle cabin. The 75A option is typically the most appropriate starting point for a street-driven RSX conversion.

Innovative Mounts 90650 vs. 90651 vs. 90652

Innovative Mounts 90650 – Manual Replacement Kit

Designed for compatible Acura RSX models originally equipped with a manual transmission. Replaces factory engine mounts without addressing automatic-to-manual conversion-specific mounting differences.

Innovative Mounts 90651 – Automatic Replacement Kit

Designed for Acura RSX Base models retaining their original automatic transmission configuration.

Innovative Mounts 90652 – Automatic-to-Manual Conversion Kit

Designed for Acura RSX models originally equipped with an automatic transmission that are being converted to a compatible K-Series manual transmission.

The 90652 is the appropriate choice when the vehicle began as an automatic and is being converted to manual.

Additional Components Required for an Automatic-to-Manual Conversion

The Innovative Mounts 90652 addresses the engine and transmission mounting portion of the conversion. Additional components are required to complete the swap.

Commonly required supporting components include:

• Compatible K-Series manual transmission

• Manual transmission flywheel

• Compatible clutch and pressure plate

• Clutch release components

• Manual transmission starter, where required by the selected configuration

• Clutch pedal assembly

• Clutch master cylinder

• Clutch slave cylinder

• Clutch hydraulic lines

• Manual transmission shifter assembly

• Compatible shifter cables

• Manual transmission axles and intermediate shaft, as required

• Appropriate transmission sensors and wiring

• ECU or engine management modifications

• Reverse-light wiring modifications

• Neutral safety or starter-interlock wiring modifications

• Transmission-specific fasteners and supporting hardware

Exact requirements depend on the transmission selected and the vehicle's existing equipment.

Important: The 90652 does not include these additional conversion components.

Common Reasons for Replacement or Upgrade

• Automatic-to-Manual Conversion: Provides the mounting components needed for a manual transmission swap in an originally automatic Acura RSX.

• Factory Automatic Mounting Differences: Addresses conversion-specific mounting requirements.

• Worn Factory Engine Mounts: Replaces deteriorated rubber mounting components.

• Excessive Drivetrain Movement: Firmer polyurethane helps control unwanted engine rocking.

• Improved Drivetrain Stability: Maintains more consistent engine and transmission positioning.

• Performance Engine Upgrades: Supports properly configured modified K-Series drivetrains.

• Track and Racing Applications: Provides increased mount rigidity for demanding driving conditions.

• Coordinated Mounting Upgrade: Replaces multiple factory mounting components during the conversion process.

Installation Notes

1. Verify Vehicle Compatibility: Confirm that the vehicle is a 2002–2006 Acura RSX originally equipped with an automatic transmission.

2. Confirm Conversion Plans: Verify that the vehicle is being converted to a compatible K-Series manual transmission.

3. Inspect the Existing Drivetrain: Check the engine, chassis, subframe, and factory mounting locations for damage or excessive wear.

4. Support the Engine: Properly support the engine before removing the factory automatic transmission and mounting components.

5. Remove the Automatic Transmission: Follow the applicable Acura factory service procedures.

6. Prepare the Manual Transmission: Install the required flywheel, clutch, release components, and supporting hardware according to the selected transmission configuration.

7. Install the Driver-Side Mount: Position the Innovative Mounts 90611 mounting component as specified by the conversion kit instructions.

8. Install the Conversion Bracket: Install the Innovative Mounts 40610-SB driver-side conversion bracket according to the manufacturer's instructions.

9. Install the Passenger-Side Mount: Position the Innovative Mounts 90620 passenger-side engine mount.

10. Install the Engine-Side Post Mount: Install the supplied Innovative Mounts B90621 post mount.

11. Install the Rear Engine Mount: Position the Innovative Mounts 90630 rear mounting component.

12. Install the Manual Transmission: Position the compatible manual transmission and verify the engine and transmission mounting alignment.

13. Verify Drivetrain Positioning: Ensure all mounts and brackets are properly aligned without excessive preload or binding.

14. Install the Required Hardware: Use the hardware specified by Innovative Mounts and the appropriate factory service procedures.

15. Torque Mounting Fasteners: Follow the applicable Acura service manual and Innovative Mounts installation instructions.

16. Install the Manual Conversion Components: Complete the clutch hydraulics, shifter assembly, cables, axles, and related drivetrain components.

17. Complete Electrical Modifications: Address the starter interlock, reverse lights, transmission sensors, and ECU requirements.

18. Inspect Drivetrain Clearance: Verify adequate clearance around the engine, transmission, exhaust, axles, and surrounding chassis components.

19. Check for Additional Vibration: Some increase in vibration is normal when upgrading from factory rubber mounts to performance polyurethane.

20. Perform a Final Inspection: Verify proper mounting alignment, secure hardware, and drivetrain operation before driving.

21. Recheck After Initial Use: Inspect the mounting components and hardware after the initial driving period.

Important: Innovative Mounts advises that mounts showing bolt impressions from installation cannot be returned or exchanged. Confirm fitment before installation.

Professional installation is strongly recommended.

What's Included

The Innovative Mounts 90652 conversion kit includes the following manufacturer-listed components:

• 1 × Innovative Mounts 90611 Driver-Side Mount

• 1 × Innovative Mounts 40610-SB Driver-Side Automatic-to-Manual Conversion Bracket

• 1 × Innovative Mounts 90620 Passenger-Side Engine Mount

• 1 × Innovative Mounts B90621 Passenger-Side Engine Post Mount

• 1 × Innovative Mounts 90630 Rear Engine Mount

• Performance polyurethane bushings in the selected hardness configuration

Additional Information

This listing includes the mounting components specified for the automatic-to-manual conversion.

The following components are not included unless separately specified:

• Manual transmission

• Flywheel and clutch assembly

• Clutch pedal assembly

• Clutch master and slave cylinders

• Shifter assembly and cables

• Axles and intermediate shaft

• ECU or engine management components

• Transmission conversion wiring

• Front engine mount

• Additional conversion hardware not specified by the manufacturer

Verify supplied fasteners and other small components against the manufacturer packaging and installation instructions.

Convert your Acura RSX from automatic to manual with the Innovative Mounts 90652 Steel Engine Mount Conversion Kit, engineered specifically for 2002–2006 Acura RSX DC5 applications equipped with Honda K-Series engines.

Featuring durable steel mounting components, a conversion-specific transmission bracket, a protective powder-coated finish, and performance polyurethane bushings, the 90652 provides the mounting solution needed to support a properly configured K-Series manual transmission conversion.

Whether you're converting a daily-driven RSX Base to a manual transmission, installing a compatible Type-S drivetrain, or preparing a performance-oriented K-Series build, Innovative Mounts delivers a dependable conversion mounting solution.