Upgrade your Honda S2000 drivetrain with the Innovative Mounts 90730 Steel Rear Transmission Mount, designed as a performance replacement for the factory rear transmission mount found in the 2000–2009 Honda S2000 AP1 and AP2 chassis.

Engineered for Honda S2000 models equipped with the factory F20C or F22C engine and manual transmission, the Innovative Mounts 90730 provides improved drivetrain stability, reduced excessive transmission movement, and increased mounting rigidity compared with worn factory rubber mounts.

The 90730 is also compatible with properly configured K-Series engine conversions, making it a versatile solution for enthusiasts upgrading their S2000 with a K20 or K24 engine.

Factory engine and transmission mounts are designed to isolate vibration and provide a comfortable driving experience. Over time, the original rubber and fluid-dampened components can deteriorate, crack, or lose their effectiveness, allowing excessive drivetrain movement during acceleration, deceleration, and shifting.

The Innovative Mounts 90730 replaces the factory-style mounting arrangement with a durable steel assembly featuring a performance polyurethane bushing. This design helps minimize unwanted drivetrain movement while maintaining more consistent transmission positioning under load.

Featuring CAD/CAM-engineered construction, stress-analyzed components, and Innovative Mounts' no-tear polyurethane bushing design, the 90730 is an excellent upgrade for daily-driven S2000s, naturally aspirated performance builds, supercharged and turbocharged applications, and dedicated motorsport vehicles.

Important: Part number 90730 is an individual rear transmission mount. It is not a complete engine mount kit or K-Series conversion kit.

Features

• Direct-Replacement Design: Replaces the factory rear transmission mount on compatible Honda S2000 applications.

• 2000–2009 Honda S2000 Compatibility: Designed for AP1 and AP2 chassis.

• F-Series Engine Compatibility: Supports factory Honda F20C and F22C engine configurations.

• K-Series Swap Compatibility: Can be used with properly configured K20 and K24 engine conversions.

• Manual Transmission Application: Designed for compatible Honda S2000 manual transmission mounting arrangements.

• Rear Transmission Mounting Position: Replaces the factory rear drivetrain mount.

• Durable Steel Construction: Provides increased mounting rigidity for performance applications.

• Performance Polyurethane Bushing: Helps reduce excessive drivetrain movement compared with conventional rubber mounts.

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

• CAD/CAM Engineered: Designed for accurate fitment and consistent mounting geometry.

• Stress-Analyzed Components: Developed for demanding drivetrain loads.

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

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

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

• Potential Wheel Hop Reduction: Reduced excessive drivetrain movement may help improve traction consistency.

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

• Individual Replacement Mount: Allows upgrading the rear transmission mount without purchasing a complete mount kit.

• Mounting Hardware Included: Supplied with the manufacturer's required installation hardware.

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

Popular Performance Applications

Honda S2000 AP1 Performance Builds

Provides upgraded rear transmission mounting for F20C-powered S2000 applications.

Honda S2000 AP2 Performance Builds

Replaces the factory rear transmission mount on compatible F22C1-powered vehicles.

Naturally Aspirated F20C/F22C Builds

Suitable for S2000s equipped with upgraded intake systems, headers, exhaust components, camshafts, and other naturally aspirated performance upgrades.

Supercharged Honda S2000 Applications

Helps control excessive drivetrain movement in properly configured supercharged builds.

Turbocharged Honda S2000 Applications

Provides increased mounting rigidity for modified forced-induction applications.

K20/K24-Swapped Honda S2000 Builds

Can be incorporated into compatible K-Series conversion mounting systems.

Daily-Driven Performance Vehicles

The 75A bushing option provides increased drivetrain rigidity while retaining some vibration isolation for street-oriented builds.

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.

Worn Factory Mount Replacement

An excellent upgrade when the original rear transmission mount has deteriorated, separated, or begun allowing excessive drivetrain movement.

Additional Information

• Manufacturer: Innovative Mounts
• Part Number: 90730
• Product Type: Rear Transmission Mount
• Mounting Position: Rear / Transmission
• Vehicle Application: 2000–2009 Honda S2000
• Chassis Compatibility: AP1 / AP2
• Engine Compatibility: Honda F20C / F22C / Supported K-Series Conversions
• Transmission Compatibility: Compatible Manual Transmission Configurations
• Mount Construction: Steel
• Bushing Material: Performance Polyurethane
• Available Bushing Hardness Options: 75A / 85A / 95A
• Engineering: CAD/CAM Designed and Stress Analyzed
• Installation Type: Direct Replacement for Supported Factory Applications
• Mounting Hardware: Included
• Manufacturer-Listed Weight: Approximately 5 lbs
• Related Rear Mounting Bracket: Innovative Mounts 90730-SB
• Related Complete Steel Replacement Mount Kit: Innovative Mounts 90750
• Warranty: Manufacturer Lifetime Warranty, Subject to Terms

Available Polyurethane Bushing Hardness Options

75A – Black – Street / Performance

The softest available bushing option for the 90730.

Recommended for daily-driven and performance-oriented Honda S2000 applications 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 manufacturer bushing 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 S2000.

Innovative Mounts 90730 vs. 90730-SB vs. 90750

Innovative Mounts 90730: Individual steel rear transmission mount for compatible 2000–2009 Honda S2000 applications.

Innovative Mounts 90730-SB: Rear mounting bracket used in supported S2000 mounting configurations. This is a separate component and does not include the 90730 polyurethane mount.

Innovative Mounts 90750: Steel replacement engine mount kit for supported factory F-Series Honda S2000 applications.

The 90730 is an excellent choice when replacing or upgrading only the rear transmission mount.

Common Reasons for Replacement

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

• Deteriorated Factory Mount: Original mounting components may lose their ability to control transmission movement.

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

• Excessive Transmission Movement: Firmer polyurethane helps control unwanted drivetrain rocking.

• Clunking During Acceleration: A worn rear transmission mount may allow excessive movement that results in noticeable drivetrain noise.

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

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

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

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

• K-Series Conversion Projects: Supports properly configured K20 and K24 conversion mounting arrangements.

• Individual Mount Replacement: Allows replacement of the rear transmission mount without purchasing a complete mount kit.

Installation Notes

1. Verify Vehicle Compatibility: Confirm that the vehicle is a supported 2000–2009 Honda S2000 AP1 or AP2.

2. Confirm Engine Configuration: Verify that the vehicle uses a compatible factory F-Series drivetrain or properly configured K-Series conversion.

3. Verify Transmission Compatibility: Confirm that the transmission and rear mounting arrangement are compatible with the Innovative Mounts 90730.

4. Inspect the Existing Mount: Check the factory rear transmission mount for cracked rubber, separation, corrosion, or excessive movement.

5. Support the Transmission: Properly support the drivetrain before removing the original rear transmission mount.

6. Remove the Factory Mount: Follow the applicable Honda S2000 factory service procedures.

7. Inspect Mounting Locations: Check the transmission mounting points, crossmember, and surrounding brackets for damage or corrosion.

8. Position the Innovative Mounts 90730: Install the replacement mount in the rear transmission mounting location.

9. Verify Mount Alignment: Ensure the mount and surrounding brackets are properly aligned without excessive preload or binding.

10. Install the Supplied Hardware: Use the mounting hardware supplied by Innovative Mounts and any factory hardware specified in the installation instructions.

11. Torque Mounting Fasteners: Follow the Honda factory service manual and Innovative Mounts installation instructions.

12. Inspect Drivetrain Clearance: Verify that the transmission, driveshaft, exhaust, and surrounding chassis components have adequate clearance.

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

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

15. Recheck After Initial Use: Inspect the mount and mounting 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 recommended.

What's Included

The Innovative Mounts 90730 includes:

• 1 × Innovative Mounts 90730 Steel Rear Transmission Mount Assembly

• 1 × Performance Polyurethane Bushing in the selected hardness configuration

• Manufacturer-Supplied Mounting Hardware

Additional Information

This listing is for the individual rear transmission mount only.

The following components are not included unless separately specified:

• Driver-side engine mount

• Passenger-side engine mount

• Complete Innovative Mounts 90750 replacement mount kit

• K-Series conversion engine mounts

• K-Series conversion brackets

• Separate rear mounting bracket, part number 90730-SB

• Engine or transmission components

Verify the supplied components against the manufacturer packaging and installation instructions.

Upgrade your Honda S2000 with the Innovative Mounts 90730 Steel Rear Transmission Mount, engineered for 2000–2009 Honda S2000 AP1 and AP2 applications equipped with compatible F-Series engines and manual transmissions.

Featuring durable steel construction, CAD/CAM engineering, stress-analyzed components, performance polyurethane bushings, and a direct-replacement mounting design, the 90730 provides improved drivetrain stability and reduced excessive transmission movement compared with worn factory mounts.

Whether you're replacing a deteriorated OEM transmission mount, upgrading a naturally aspirated or forced-induction S2000, or completing a properly configured K20/K24 engine conversion, Innovative Mounts delivers a dependable performance mounting solution.