Upgrade your Honda or Acura drivetrain with the Innovative Mounts 90610 Driver-Side Transmission Mount, designed as a performance replacement for the factory left-hand transmission mount found in the 2002–2006 Acura RSX and 2002–2005 Honda Civic Si/Type-R EP3.

Engineered for vehicles equipped with Honda K-Series engines and manual transmissions, the Innovative Mounts 90610 replaces the factory rubber mount with a stronger steel mounting assembly featuring a performance polyurethane bushing.

Factory engine and transmission mounts are designed to isolate vibration and provide a comfortable driving experience. Over time, the rubber can deteriorate, crack, or separate, allowing excessive drivetrain movement during acceleration, deceleration, and shifting.

The Innovative Mounts 90610 provides increased resistance to drivetrain movement, helping improve engine and transmission stability while maintaining more consistent powertrain positioning.

Featuring solid steel construction, a durable powder-coated finish, and Innovative Mounts' no-tear polyurethane bushing design, this replacement mount is ideal for performance-oriented daily drivers, modified K-Series vehicles, and dedicated racing applications.

Important: Part number 90610 is a single driver-side transmission mount, not a complete engine mount kit or an engine swap conversion kit.

Features

• Direct-Replacement Design: Replaces the factory driver-side transmission mount on compatible Acura RSX and Honda Civic Si/Type-R applications.

• K-Series Engine Compatibility: Designed for supported factory K-Series engine configurations.

• Manual Transmission Application: Compatible with supported K-Series manual transmissions.

• Solid Steel Construction: Provides a durable mounting assembly for performance applications.

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

• Performance Polyurethane Bushing: Offers increased resistance to drivetrain movement compared with conventional rubber mounts.

• No-Tear Bushing Design: Innovative Mounts' polyurethane design helps minimize excessive engine movement and vibration.

• Improved Drivetrain Stability: Helps control unwanted engine and transmission movement during acceleration.

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

• Improved Shifting Feel: Reduced transmission movement can help improve drivetrain consistency during gear changes.

• Potential Wheel Hop Reduction: Firmer mounts may help reduce excessive drivetrain movement during hard acceleration.

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

• Individual Replacement Mount: Allows replacement of the driver-side mount without purchasing a complete mount kit.

• Part of Innovative Mounts 90650 Kit: Also used in the manufacturer's complete steel replacement engine mount kit.

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

Popular Performance Applications

Acura RSX Type-S Performance Builds

Provides firmer transmission mounting for modified RSX Type-S vehicles equipped with compatible K-Series manual transmissions.

Honda Civic Si EP3 Upgrades

Replaces the factory driver-side mount with a performance polyurethane mounting solution.

Naturally Aspirated K-Series Builds

Suitable for vehicles equipped with performance intake manifolds, headers, camshafts, and other naturally aspirated upgrades.

Turbocharged K-Series Applications

Helps reduce excessive drivetrain movement in properly configured forced-induction applications.

Daily-Driven Performance Vehicles

The 75A bushing option provides an entry point for enthusiasts seeking firmer drivetrain support without selecting the stiffest race-oriented bushings.

Autocross and Road Racing

Reduced transmission movement helps maintain consistent drivetrain positioning during acceleration, braking, and cornering.

Drag Racing Applications

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

Worn Factory Mount Replacement

An ideal upgrade when the original rubber transmission mount has cracked, separated, or deteriorated.

Additional Information

• Manufacturer: Innovative Mounts
• Part Number: 90610
• Product Type: Driver-Side Transmission Mount
• Mounting Position: Left / Driver Side
• Vehicle Application: 2002–2006 Acura RSX / 2002–2005 Honda Civic Si/Type-R
• Chassis Compatibility: DC5 / EP3
• Engine Compatibility: Honda K-Series
• Transmission Compatibility: Manual
• Mount Construction: Steel
• Finish: Powder-Coated
• Bushing Material: Performance Polyurethane
• Available Bushing Hardness Options: 75A / 85A / 95A
• OEM Replacement Reference: 50805-S7C-013
• Complete Mount Kit Reference: Innovative Mounts 90650
• Billet Aluminum Alternative: Innovative Mounts B90610
• Manufacturer-Listed Weight: Approximately 6 lbs
• Warranty: Manufacturer Lifetime Warranty, Subject to Terms

Available Polyurethane Bushing Hardness Options

75A – Black – Street / Performance

The softest available bushing option for the 90610.

Recommended for performance-oriented street vehicles where improved drivetrain stability is desired while retaining some vibration isolation.

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.

Important: Increasing bushing hardness generally increases noise, vibration, and harshness transmitted into the vehicle cabin. Select the appropriate bushing based on the vehicle's intended use and desired comfort level.

Innovative Mounts 90610 vs. B90610 vs. 90650

Innovative Mounts 90610: Steel driver-side transmission mount for compatible Acura RSX and Honda Civic EP3 manual transmission applications.

Innovative Mounts B90610: Billet aluminum version of the driver-side replacement mount.

Innovative Mounts 90650: Complete steel replacement engine mount kit for supported Acura RSX and Honda Civic EP3 applications.

The 90610 is an ideal choice when replacing or upgrading only the driver-side transmission mount.

Common Reasons for Replacement

• Cracked Factory Rubber: Aging rubber can deteriorate and allow excessive drivetrain movement.

• Separated Mount Bushing: Worn factory mounts may develop excessive movement under load.

• Excessive Engine Rocking: Firmer polyurethane helps control unwanted drivetrain movement.

• Clunking During Acceleration: A worn transmission mount may allow the drivetrain to shift excessively.

• Clunking During Gear Changes: Excessive transmission movement can contribute to noticeable drivetrain movement during shifting.

• Reduced Drivetrain Stability: Performance polyurethane helps maintain more consistent engine and transmission positioning.

• Performance Engine Upgrades: Modified K-Series engines can benefit from firmer drivetrain mounting.

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

• Individual Mount Replacement: Allows replacement of the driver-side mount without purchasing a complete mount kit.

Installation Notes

1. Verify Vehicle Compatibility: Confirm that the vehicle is a supported 2002–2006 Acura RSX or 2002–2005 Honda Civic Si/Type-R EP3.

2. Confirm Transmission Type: Verify that the vehicle is equipped with a compatible manual transmission.

3. Inspect the Existing Mount: Check the factory driver-side transmission mount for cracked rubber, separation, corrosion, or excessive movement.

4. Support the Drivetrain: Properly support the engine and transmission before removing the original mount.

5. Remove the Factory Mount: Follow the applicable Honda or Acura service procedures for removing the driver-side transmission mount.

6. Inspect Mounting Locations: Check the chassis mounting points and transmission-side bracket for damage or corrosion.

7. Position the Innovative Mounts 90610: Install the replacement mount in the original driver-side mounting location.

8. Verify Mount Alignment: Ensure the mount and transmission bracket are properly aligned without excessive preload or binding.

9. Install the Mounting Hardware: Reuse applicable factory hardware or replacement hardware specified by the manufacturer.

10. Torque Mounting Fasteners: Follow the applicable factory service manual and Innovative Mounts installation instructions.

11. Inspect Drivetrain Clearance: Verify that the engine and transmission do not contact surrounding chassis components.

12. Check for Excessive Vibration: Some additional vibration is normal when upgrading from factory rubber mounts to performance polyurethane.

13. Perform a Final Inspection: Verify proper mounting alignment and secure hardware before operating the vehicle.

14. Recheck After Initial Use: Inspect the mount and mounting hardware after the initial driving period.

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

Professional installation is recommended.

What's Included

• 1 × Innovative Mounts 90610 Driver-Side Steel Transmission Mount

• 1 × Performance Polyurethane Bushing in the selected hardness configuration

Additional Information

This listing is for the individual driver-side transmission mount only.

The following components are not included unless separately specified:

• Passenger-side engine mount

• Rear engine mount

• Complete Innovative Mounts 90650 mount kit

• Separate transmission-side mounting bracket

• Engine or transmission components

Verify any required mounting hardware against the manufacturer instructions before installation.

Upgrade your Acura RSX or Honda Civic Si with the Innovative Mounts 90610 Steel Driver-Side Transmission Mount, designed for 2002–2006 Acura RSX DC5 and 2002–2005 Honda Civic Si/Type-R EP3 applications equipped with compatible K-Series engines and manual transmissions.

Featuring durable steel construction, a protective powder-coated finish, performance polyurethane bushings, and a direct-replacement mounting design, the 90610 provides improved drivetrain stability and reduced excessive transmission movement compared with worn factory rubber mounts.

Whether you're replacing a deteriorated OEM mount, upgrading a daily-driven K-Series vehicle, or preparing for aggressive track use, Innovative Mounts delivers a dependable performance mounting solution.