Transform your Toyota MR2 Spyder with the Innovative Mounts 90551 K-Series Engine Swap Mount Kit, engineered for installing a compatible Honda K20 or K24 engine and Acura RSX manual transmission into the 2000–2005 Toyota MR2 Spyder ZZW30 chassis.

Designed specifically for enthusiasts looking to replace the factory Toyota 1ZZ-FE engine with Honda's popular K-Series platform, the Innovative Mounts 90551 provides the specialized engine and transmission mounting components required for a properly configured K-Series conversion.

The Toyota MR2 Spyder is known for its lightweight construction, mid-engine layout, and responsive handling characteristics. Combining this chassis with Honda's K-Series engine platform creates an exciting opportunity for increased horsepower, torque, and performance potential.

Featuring durable steel construction, CAD/CAM-engineered mounting geometry, stress-analyzed components, and Innovative Mounts' no-tear polyurethane bushings, the 90551 helps reduce excessive engine movement and maintain consistent drivetrain positioning during acceleration, shifting, and aggressive driving.

Whether you're building a naturally aspirated K20-powered MR2 Spyder, a high-torque K24 street car, or a custom turbocharged K-Series track project, the Innovative Mounts 90551 provides a purpose-built mounting foundation for your engine conversion.

Features

• 2000–2005 Toyota MR2 Spyder Compatibility: Designed specifically for the ZZW30 chassis.

• Honda K-Series Engine Swap Design: Engineered for compatible Honda K20 and K24 engine conversions.

• Acura RSX Transmission Compatibility: Designed around compatible 2002–2006 Acura RSX Type-S/Type-R manual transmission configurations.

• Manual and SMT Chassis Support: Suitable for supported MR2 Spyder chassis originally equipped with manual or sequential manual transmissions.

• Steel Construction: Durable engine and transmission mounting components for performance applications.

• Application-Specific Design: Engineered for positioning a Honda K-Series drivetrain within the Toyota MR2 Spyder chassis.

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

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

• No-Tear Polyurethane Bushings: Help minimize excessive engine and transmission movement.

• Replaceable Polyurethane Inserts: Allows replacement of worn or damaged inserts when necessary.

• Improved Drivetrain Stability: Helps reduce unwanted engine rocking during acceleration and shifting.

• Reduced Wheel Hop: Firmer mounts may help limit excessive drivetrain movement under load.

• Improved Drivetrain Response: Reduced mount deflection helps maintain more consistent engine positioning.

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

• Installation Hardware Included: Includes manufacturer-supplied mounting hardware.

• Street and Motorsport Applications: Suitable for properly configured performance builds.

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

Popular Performance Applications

Toyota MR2 Spyder K20 Engine Swaps

Provides application-specific mounting support for installing a compatible Honda K20 engine into the ZZW30 chassis.

K24-Powered MR2 Spyder Builds

Supports properly configured K24 conversions for enthusiasts seeking additional displacement and torque.

Naturally Aspirated K-Series Performance

Suitable for compatible K-Series engines equipped with upgraded camshafts, intake manifolds, headers, and supporting performance components.

Turbocharged K-Series MR2 Spyder Builds

Performance polyurethane bushings help control excessive drivetrain movement in properly configured forced-induction applications.

Track and Road Racing

The MR2 Spyder's lightweight mid-engine platform makes it an attractive candidate for K-Series-powered track builds.

Autocross Applications

Reduced engine mount deflection can help maintain consistent drivetrain positioning during rapid acceleration, braking, and cornering transitions.

Custom Mid-Engine Performance Projects

Provides a specialized mounting solution for enthusiasts combining Toyota's ZZW30 chassis with Honda K-Series power.

Additional Information

• Manufacturer: Innovative Mounts
• Part Number: 90551
• Product Type: Steel K-Series Engine Swap Mount Kit
• Vehicle Application: 2000–2005 Toyota MR2 Spyder
• Chassis Compatibility: ZZW30
• Original Engine: Toyota 1ZZ-FE
• Engine Compatibility: Compatible Honda K20 / K24
• Transmission Compatibility: 2002–2006 Acura RSX Type-S/Type-R Manual
• Original Chassis Transmission: Manual or SMT
• Mount Construction: Steel
• Bushing Material: Performance Polyurethane
• Available Bushing Hardness Options: 75A / 85A / 95A
• Engineering: CAD/CAM Designed and Stress Analyzed
• Installation Type: Honda K-Series Engine Swap Conversion
• Mounting Hardware: Included
• Manufacturer-Listed Weight: Approximately 21 lbs
• Warranty: Manufacturer Lifetime Warranty, Subject to Terms

Available Polyurethane Bushing Hardness Options

75A – Black – Street / Performance

The softest available option for the 90551.

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: Firmer polyurethane bushings generally increase noise, vibration, and harshness transmitted into the vehicle cabin.

Innovative Mounts 90551 vs. 60550

Innovative Mounts 90551: K-Series engine conversion mount kit for the 2000–2005 Toyota MR2 Spyder using a compatible Honda K-Series engine and Acura RSX manual transmission.

Innovative Mounts 60550: Replacement engine mount kit designed for the original Toyota 1ZZ-FE engine and factory manual transmission configuration.

The 90551 is intended for Honda K-Series engine conversions, while the 60550 is intended for retaining the factory Toyota drivetrain.

Common Reasons for Replacement or Upgrade

• Honda K-Series Engine Conversion: Provides specialized mounting components for installing a compatible K20 or K24 engine.

• Increased Performance Potential: Supports custom engine conversions using Honda's extensive K-Series aftermarket.

• Acura RSX Manual Transmission Installation: Designed for compatible RSX Type-S/Type-R manual transmission configurations.

• Improved Drivetrain Stability: Helps reduce excessive engine movement during acceleration.

• Reduced Mount Deflection: Provides firmer engine support compared with conventional rubber mounts.

• Improved Drivetrain Response: Helps maintain more consistent engine positioning under load.

• Reduced Wheel Hop: Firmer mounts can help limit excessive drivetrain movement.

• Performance Engine Builds: Suitable for compatible naturally aspirated and turbocharged K-Series applications.

• Track and Racing Applications: Supports performance-oriented drivetrain configurations.

• Custom Mid-Engine Projects: Provides a purpose-built mounting solution for K-Series-powered MR2 Spyder builds.

Installation Notes

1. Verify Vehicle Compatibility: Confirm that the vehicle is a 2000–2005 Toyota MR2 Spyder ZZW30.

2. Confirm Engine Compatibility: Identify the exact Honda K20 or K24 engine being installed.

3. Verify Transmission Compatibility: Confirm that the selected transmission is a compatible 2002–2006 Acura RSX Type-S/Type-R manual transmission.

4. Inspect Original Transmission Configuration: Determine whether the vehicle was originally equipped with a conventional manual or SMT transmission and plan the necessary conversion components.

5. Plan the Complete K-Series Conversion: Obtain the required engine, transmission, axles, shifter, wiring, ECU, cooling system, and supporting components.

6. Inspect Factory Mounting Locations: Check the chassis mounting points and surrounding components for damage or corrosion.

7. Support the Vehicle and Drivetrain: Use appropriate lifting equipment and engine support tools.

8. Remove the Factory Drivetrain: Follow applicable Toyota service procedures for removing the original engine and transmission.

9. Prepare the K-Series Engine: Install the required engine-side mounting brackets and supporting swap components.

10. Install the Innovative Mounts Components: Position the conversion mounts and brackets according to the manufacturer's installation instructions.

11. Verify Engine and Transmission Positioning: Ensure the drivetrain is properly aligned and the mounts are not binding.

12. Inspect Axle Fitment: Confirm proper axle engagement, operating angles, and clearance.

13. Check Engine Bay Clearance: Verify clearance around the chassis, exhaust system, intake components, and surrounding accessories.

14. Complete Supporting Systems: Install and verify the ECU, wiring, cooling, fuel, clutch, and shifter components.

15. Torque Mounting Hardware: Follow Innovative Mounts' installation instructions and applicable Toyota and Honda factory torque specifications.

16. Perform a Final Inspection: Check all mounting hardware, drivetrain clearances, fluid connections, and transmission operation before driving.

17. Check for Excessive Vibration: Some increase in vibration is normal with performance polyurethane mounts, particularly with firmer bushing options.

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

Professional installation is strongly recommended, as K-Series engine conversions in the MR2 Spyder require extensive drivetrain integration and supporting modifications.

What's Included

The Innovative Mounts 90551 includes:

• Application-specific K-Series engine and transmission conversion mounts

• Steel mounting brackets

• Performance polyurethane bushings in the selected hardness configuration

• Manufacturer-supplied installation hardware

Important: The kit provides the specialized mounting components for the engine conversion. It is not a complete engine swap package. Confirm the exact bracket and hardware inventory against the manufacturer's packing list before installation.

Additional Components Required

The following components are not included unless separately specified:

• Honda K20 or K24 engine

• Compatible Acura RSX Type-S/Type-R manual transmission

• Clutch and flywheel

• Axles and drivetrain conversion components

• Shifter and shift linkage components

• ECU and wiring conversion components

• Cooling system modifications

• Fuel system components

• Intake and exhaust components

• Additional engine-side brackets, if required

• SMT-to-conventional-manual conversion components, if applicable

• Custom fabrication components, as required

Transform your Toyota MR2 Spyder with the Innovative Mounts 90551 K-Series Engine Swap Mount Kit, engineered for 2000–2005 ZZW30 applications using compatible Honda K20 or K24 engines and Acura RSX Type-S/Type-R manual transmissions.

Featuring durable steel construction, CAD/CAM engineering, stress-analyzed components, performance polyurethane bushings, and application-specific mounting geometry, the 90551 provides a dependable foundation for a properly configured K-Series conversion.

Whether you're building a naturally aspirated K20-powered MR2 Spyder, a high-torque K24 street car, or a turbocharged mid-engine track project, Innovative Mounts delivers a purpose-built mounting solution for your build.