Transform your fifth-generation Honda Prelude with the Hasport BB6K2 K-Series Engine Swap Mount Kit, engineered for installing compatible Honda K20 or K24 engines paired with Acura RSX or 2002–2011 Honda Civic Si manual transmissions into the 1997–2001 Honda Prelude BB6 chassis.

Designed specifically for Honda K-Series conversions, the Hasport BB6K2 provides the specialized engine and transmission mounting components needed to replace the factory H-Series drivetrain with Honda's popular K-Series engine platform.

The BB6K2 features Hasport's innovative dual-height mounting design, allowing compatible K20 and K24 engines to be positioned appropriately within the Prelude engine bay while maintaining consistent cylinder head placement. This helps simplify intake and exhaust fitment while optimizing axle alignment, hood clearance, and ground clearance.

Featuring precision-engineered mounting components, durable construction, and performance polyurethane bushings, the BB6K2 provides a dependable foundation for naturally aspirated, turbocharged, and competition-oriented Prelude builds.

Whether you're building a high-revving K20-powered Prelude, a high-torque K24 street car, or a custom forced-induction project, the Hasport BB6K2 delivers the drivetrain support needed for a serious K-Series conversion.

Designed for Fifth-Generation Honda Prelude K-Series Swaps

The 1997–2001 Honda Prelude offers a capable performance chassis with excellent potential for custom engine conversions.

The Hasport BB6K2 allows builders to replace the factory H22 drivetrain with a compatible Honda K-Series engine and manual transmission combination.

Key benefits include:

• Application-specific mounting for the fifth-generation Honda Prelude.

• Compatibility with supported Honda K20 and K24 engines.

• Support for Acura RSX and 2002–2011 Honda Civic Si manual transmissions.

• Dual-height mounting geometry for optimized drivetrain positioning.

• Improved axle alignment considerations.

• Engine placement designed around hood and ground clearance.

• Reduced excessive drivetrain movement.

• A durable mounting foundation for street and motorsport applications.

Acura RSX and Civic Si Transmission Compatibility

The Hasport BB6K2 is specifically designed for compatible K-Series manual transmissions from the following vehicles:

• 2002–2006 Acura RSX 5-Speed Manual

• 2002–2006 Acura RSX Type-S 6-Speed Manual

• 2002–2011 Honda Civic Si Manual

These transmissions are popular for K-Series engine conversions because of their availability, aftermarket support, and compatibility with many Honda K20 and K24 engine combinations.

The BB6K2 provides the appropriate mounting arrangement for this transmission family.

Important: The BB6K2 is not interchangeable with the BB6K4 or BB6K5. Each version is designed for a different K-Series manual transmission mounting configuration.

Dual-Height K20 and K24 Mounting System

One of the key advantages of the Hasport BB6K2 is its dual-height mounting design.

Honda K20 and K24 engines have different engine block heights, which affect cylinder head positioning, hood clearance, and drivetrain placement.

Hasport engineered the BB6K mounting system to accommodate these differences while maintaining consistent cylinder head positioning between supported engine configurations.

Benefits of this design include:

• Optimized engine placement for K20 and K24 applications.

• Improved hood clearance considerations.

• Better ground clearance management.

• Consistent cylinder head positioning.

• Simplified intake manifold and intake system fitment planning.

• More consistent header and exhaust positioning.

• Greater flexibility when designing turbocharger systems.

• Improved drivetrain alignment within the Prelude chassis.

Precision-Engineered Hasport Construction

Hasport develops its engine mounting systems using advanced CAD/CAM engineering technology to achieve accurate fitment, consistent manufacturing quality, and dependable structural strength.

The BB6K2 uses application-specific mounting components designed to withstand the demands of performance-oriented engine conversions.

Its combination of precision engineering and performance polyurethane bushings provides a reliable mounting solution for both street-driven and competition vehicles.

Performance Polyurethane Bushings

The Hasport BB6K2 is available with four polyurethane bushing hardness options.

Unlike conventional factory rubber mounts, performance polyurethane bushings help reduce excessive engine and transmission movement during acceleration, deceleration, and shifting.

Reducing drivetrain movement helps maintain more consistent engine positioning and can improve shifting stability during aggressive driving.

Builders can select the appropriate bushing hardness based on their intended application, from daily driving to dedicated competition use.

Features

• 1997–2001 Honda Prelude Compatibility: Designed for fifth-generation Prelude BB6 chassis applications.

• K-Series Engine Swap Design: Supports compatible Honda K20 and K24 engines.

• Acura RSX Transmission Compatibility: Designed for compatible 2002–2006 Acura RSX manual transmissions.

• Honda Civic Si Transmission Compatibility: Supports compatible 2002–2011 Honda Civic Si manual transmissions.

• Dual-Height Mounting System: Accommodates supported K20 and K24 engine configurations.

• Optimized Drivetrain Positioning: Engineered for proper engine and transmission placement.

• Improved Axle Alignment: Mounting geometry designed with axle positioning in mind.

• Hood and Ground Clearance Considerations: Optimized engine placement within the Prelude chassis.

• Manual and Automatic Chassis Compatibility: Works with Prelude chassis originally equipped with either transmission type.

• CAD/CAM Engineered: Designed for accurate fitment and structural strength.

• Performance Polyurethane Bushings: Help reduce excessive drivetrain movement.

• Improved Engine Stability: Limits unwanted engine rocking during acceleration and shifting.

• Multiple Bushing Hardness Options: Available in 62A, 70A, 88A, and 94A configurations.

• Naturally Aspirated and Forced-Induction Applications: Suitable for compatible performance K-Series builds.

• Hasport Limited Lifetime Warranty: Backed by the manufacturer's limited lifetime warranty against defects, subject to warranty terms.

Popular Performance Applications

1997–2001 Honda Prelude K20 Swaps

Provides the specialized mounting foundation for installing a compatible K20 engine into the fifth-generation Prelude.

K24A2 Performance Conversions

Supports compatible K24A2 engine installations for increased displacement and torque potential.

Acura RSX Type-S Drivetrain Swaps

Allows builders to use compatible RSX Type-S six-speed manual transmissions with supported K-Series engines.

2006–2011 Civic Si Transmission Conversions

Provides mounting compatibility for supported eighth-generation Civic Si six-speed manual transmissions.

Naturally Aspirated K-Series Performance

Suitable for compatible K-Series engines equipped with performance camshafts, intake manifolds, headers, and other naturally aspirated modifications.

Turbocharged Prelude Builds

Provides dependable drivetrain mounting support for custom forced-induction K-Series applications.

Autocross and Road Racing

Performance polyurethane bushings help reduce excessive engine movement during acceleration, braking, and cornering.

Drag Racing Applications

Provides increased drivetrain stability for aggressive launches and high-load acceleration.

Street Performance Conversions

The available 62A Street bushing option allows builders to prioritize everyday drivability while upgrading drivetrain support.

Additional Information

• Manufacturer: Hasport Performance
• Part Number: BB6K2
• Product Type: K-Series Engine Swap Mount Kit
• Vehicle Application: 1997–2001 Honda Prelude
• Chassis Compatibility: BB6 – Fifth Generation
• Engine Compatibility: Compatible Honda K20 / K24
• Transmission Compatibility: Acura RSX / 2002–2011 Honda Civic Si Manual
• Mounting Design: Dual-Height K-Series Mounting System
• Bushing Material: Performance Polyurethane
• Available Bushing Hardness Options: U62A / U70A / U88A / U94A
• Design Method: CAD/CAM Engineered
• Original Chassis Transmission: Manual or Automatic
• Installation Type: K-Series Engine Swap Conversion
• Chassis Modification Required: Yes – Factory Transmission Mount Bracket on Frame Rail
• Manufacturer Warranty: Limited Lifetime Warranty Against Defects, Subject to Hasport Terms

Available Polyurethane Bushing Hardness Options

62A – Street

The softest available configuration, designed for street-driven vehicles where vibration isolation and everyday comfort are important considerations.

Recommended for daily-driven K-Series Prelude conversions and street performance applications.

70A – Race

Provides increased drivetrain rigidity for aggressive street driving, spirited performance applications, and occasional track use.

Suitable for modified naturally aspirated and turbocharged K-Series engines where additional drivetrain stability is desired.

88A – Extreme Race

A firmer polyurethane configuration intended for demanding motorsport applications where minimizing drivetrain movement is a priority.

Recommended for competition-oriented vehicles requiring increased engine stability.

94A – Most Extreme Race

The stiffest available polyurethane configuration, intended for dedicated racing applications where maximum drivetrain rigidity takes priority over passenger comfort.

Higher-durometer bushings generally increase noise, vibration, and harshness transmitted into the vehicle cabin.

BB6K2 vs. BB6K4 vs. BB6K5

Hasport BB6K2: Designed for compatible K20 or K24 engine swaps using Acura RSX or 2002–2011 Honda Civic Si manual transmissions.

Hasport BB6K4: Designed for compatible K20 or K24 engine swaps using 2003–2007 Honda Accord or 2004–2008 Acura TSX manual transmissions.

Hasport BB6K5: Designed for compatible K20 or K24 engine swaps using 2008–2013 Honda Accord, 2009–2014 Acura TSX, or 2012–2015 Honda Civic Si manual transmissions.

All three configurations are designed for the 1997–2001 Prelude, but they accommodate different transmission mounting arrangements.

Common Reasons for Replacement or Upgrade

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

• Prelude Drivetrain Modernization: Supports replacing the factory H-Series engine with a K-Series platform.

• Acura RSX Transmission Installation: Accommodates compatible RSX manual transmissions.

• Civic Si Transmission Installation: Supports compatible 2002–2011 Civic Si manual transmissions.

• Increased Performance Potential: Opens access to extensive K-Series naturally aspirated and forced-induction modifications.

• Dual-Height Engine Compatibility: Accommodates supported K20 and K24 engine block heights.

• Optimized Drivetrain Placement: Engineered for axle alignment and clearance considerations.

• Reduced Engine Movement: Polyurethane bushings help limit excessive drivetrain rocking.

• Improved Shifting Stability: Reduced mount deflection helps stabilize the drivetrain during gear changes.

• Street and Competition Applications: Multiple bushing hardness options accommodate different driving requirements.

Installation Notes

1. Verify Vehicle Compatibility: Confirm that the vehicle is a 1997–2001 Honda Prelude.

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

3. Verify Transmission Compatibility: Confirm that the selected transmission is from a supported Acura RSX or 2002–2011 Honda Civic Si application.

4. Inspect Engine-Side Mounting Brackets: Verify that the engine has the appropriate mounting provisions and required brackets.

5. Prepare for Chassis Modification: Hasport specifies that the factory transmission mounting bracket on the frame rail must be modified. The installation procedure involves removing the interfering factory bracket as required by the manufacturer.

6. Inspect the Engine Bay: Check the condition of the frame rails, factory mounting points, and surrounding components before beginning the conversion.

7. Plan Supporting Swap Components: Additional axles, intermediate shaft, wiring, ECU, shifter, shift cables, clutch, cooling, fuel system, and exhaust components will be required.

8. Support the Engine and Transmission: Use appropriate lifting equipment and drivetrain supports.

9. Remove the Factory Drivetrain: Follow the applicable Honda service procedures.

10. Complete Required Chassis Modifications: Perform the transmission bracket modification according to Hasport's installation instructions.

11. Install the Hasport Mounting Components: Position the mounts and brackets according to the manufacturer's instructions.

12. Verify Engine Height and Positioning: Confirm that the selected K20 or K24 configuration provides the intended engine placement.

13. Inspect Axle Alignment: Verify proper axle engagement, operating angles, and clearance.

14. Check Hood and Ground Clearance: Confirm that the installed drivetrain does not interfere with surrounding components.

15. Verify Intake and Exhaust Fitment: Check compatibility with the selected intake manifold, header, exhaust routing, and any forced-induction components.

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

17. Torque Mounting Hardware: Follow Hasport's installation instructions and applicable Honda factory torque specifications.

18. Perform a Final Inspection: Verify mounting hardware, drivetrain positioning, and surrounding component clearances before operating the vehicle.

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

Professional installation is strongly recommended because K-Series engine conversions require chassis modifications and extensive drivetrain integration.

What's Included

• Hasport BB6K2 K-Series engine swap mounting components

• Application-specific engine and transmission mounting brackets

• Performance polyurethane bushings in the selected hardness configuration

• Associated mounting hardware supplied with the kit

Important: The BB6K2 is an engine and transmission mounting kit, not a complete K-Series conversion package.

The engine, transmission, axles, intermediate shaft, ECU, wiring harness, shifter assembly, shift cables, clutch components, cooling system modifications, and other supporting swap parts are not included unless otherwise specified.

Transform your fifth-generation Honda Prelude with the Hasport BB6K2 K-Series Engine Swap Mount Kit, engineered for 1997–2001 Prelude applications using compatible Honda K20 or K24 engines with Acura RSX or 2002–2011 Honda Civic Si manual transmissions.

Featuring Hasport's dual-height mounting system, optimized drivetrain positioning, precision-engineered construction, and performance polyurethane bushings, the BB6K2 provides the support and stability needed for a serious K-Series conversion.

Whether you're building a high-revving K20 Prelude, a high-torque K24 street car, or a custom turbocharged performance project, Hasport delivers a purpose-built mounting solution for your build.