Upgrade your Honda Prelude with the Hasport BB1K2 K-Series Engine Swap Mount Kit, designed to provide the engine and transmission mounting foundation for installing a compatible Honda K20 or K24 drivetrain into the Prelude BB chassis.

The BB1K2 is designed for K-Series conversions using compatible Acura RSX and Honda Civic Si manual transmissions. Its application-specific mounting components allow builders to replace the original Prelude drivetrain with a modern Honda K-Series powerplant.

Whether you're building a high-revving K20, a torque-focused K24, or a custom turbocharged Prelude, the Hasport BB1K2 provides the mounting support needed for a performance-oriented engine conversion.

Featuring precision-engineered components and performance polyurethane bushings, this kit is designed to reduce excessive drivetrain movement while maintaining proper engine and transmission positioning.

Designed for Honda K-Series Engine Swaps

Honda's K-Series engine platform is popular for its strong aftermarket support, efficient cylinder head design, and extensive naturally aspirated and forced-induction performance potential.

The Hasport BB1K2 provides specialized mounting components for adapting a compatible K-Series drivetrain to the Prelude chassis.

Key advantages include:

• Support for compatible Honda K20 and K24 engines.

• Compatibility with the specified RSX and Civic Si manual transmission family.

• Application-specific engine and transmission positioning.

• Reduced excessive drivetrain movement.

• Improved drivetrain stability during acceleration and shifting.

• A durable foundation for custom street and motorsport builds.

Engineered for RSX and Civic Si Manual Transmissions

The BB1K2 is intended for compatible manual transmissions from the following vehicles:

• 2002–2006 Acura RSX

• 2002–2005 Honda Civic Si

• 2006–2011 Honda Civic Si

These transmissions are popular choices for K-Series conversions due to their performance potential, gearing options, and aftermarket support.

The transmission selection is critical because different Honda K-Series transmission families use different mounting configurations.

Performance Polyurethane Bushings

Hasport's polyurethane bushings are designed to limit excessive engine and transmission movement compared with conventional factory rubber mounts.

Reduced drivetrain movement helps maintain more consistent engine positioning during hard acceleration, deceleration, and shifting.

Multiple bushing hardness options allow builders to choose the appropriate balance between vibration isolation and drivetrain rigidity.

Features

• Honda Prelude K-Series Conversion: Designed for compatible Prelude BB chassis applications.

• K20 and K24 Engine Compatibility: Supports compatible Honda 2.0L and 2.4L K-Series configurations.

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

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

• Application-Specific Mounting Geometry: Designed to position the K-Series drivetrain within the Prelude engine bay.

• Precision-Engineered Construction: Manufactured for dependable fitment and structural strength.

• Performance Polyurethane Bushings: Help reduce unwanted drivetrain movement.

• Improved Engine Stability: Helps limit engine rocking during acceleration and gear changes.

• Multiple Bushing Hardness Options: Available for street and competition applications.

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

• Hasport Performance Engineering: Developed for specialized Honda engine swap applications.

Popular Performance Applications

Honda Prelude K20 Swaps

Provides the mounting foundation for compatible high-revving K20 engine conversions.

K24A2 Performance Builds

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

K20/K24 Hybrid Builds

Suitable for compatible hybrid K-Series engine configurations using the appropriate mounting components.

Naturally Aspirated Performance

Ideal for K-Series engines equipped with upgraded intake manifolds, camshafts, headers, and other performance components.

Turbocharged K-Series Applications

Provides drivetrain support for custom turbocharged Prelude builds.

Street and Track Performance

Performance polyurethane bushings help reduce excessive engine movement during aggressive driving.

Additional Information

• Manufacturer: Hasport Performance
• Part Number: BB1K2
• Product Type: K-Series Engine Swap Mount Kit
• Vehicle Application: Honda Prelude BB Chassis
• Engine Compatibility: Compatible Honda K20 / K24
• Transmission Compatibility: Acura RSX / 2002–2011 Honda Civic Si Manual
• Bushing Material: Performance Polyurethane
• Available Bushing Hardness Options: 62A / 70A / 88A / 94A
• Installation Type: K-Series Engine Swap Conversion

Available Polyurethane Bushing Hardness Options

62A – Street

Designed for street-driven vehicles where vibration isolation and everyday comfort are important considerations.

70A – Race

Provides increased drivetrain rigidity for aggressive street driving and occasional track use.

88A – Extreme Race

A firmer polyurethane configuration intended for demanding motorsport applications.

94A – Most Extreme Race

The stiffest configuration, designed for dedicated racing vehicles where maximum drivetrain rigidity is the priority.

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

Common Reasons for Replacement or Upgrade

• K-Series Engine Conversion: Provides the specialized mounting foundation for a K20 or K24 swap.

• Prelude Drivetrain Upgrade: Supports replacement of the original drivetrain with a compatible K-Series engine and transmission.

• RSX or Civic Si Transmission Installation: Accommodates supported K-Series manual transmissions.

• Increased Performance Potential: Opens access to extensive K-Series aftermarket performance upgrades.

• Reduced Drivetrain Movement: Polyurethane bushings help limit excessive engine movement.

• Improved Shifting Stability: Helps maintain consistent transmission positioning.

• Street and Motorsport Builds: Provides durable drivetrain mounting for performance applications.

Installation Notes

1. Verify Chassis Compatibility: Confirm that the vehicle matches the specific Prelude BB chassis application supported by Hasport.

2. Confirm Engine Compatibility: Identify the exact K20 or K24 engine and verify its mounting provisions.

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

4. Inspect Engine-Side Brackets: Verify that all required engine mounting brackets and attachment points are present.

5. Plan Supporting Swap Components: Additional axles, wiring, ECU, shifter, cooling, and exhaust components may be required.

6. Support the Drivetrain: Use appropriate lifting equipment and engine supports during installation.

7. Install the Mounting Components: Position the engine and transmission mounts according to Hasport's instructions.

8. Verify Engine Positioning: Check hood clearance, oil pan clearance, and surrounding engine bay components.

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

10. Complete Required Modifications: Perform any necessary chassis, wiring, exhaust, or clutch system modifications.

11. Torque Mounting Hardware: Follow Hasport's installation instructions and applicable Honda service specifications.

12. Inspect After Installation: Recheck mounting hardware and drivetrain clearances after the initial driving period.

Professional installation is recommended because K-Series engine swaps require additional drivetrain and electrical modifications.

What's Included

• Hasport BB1K2 K-Series engine swap mounting components

• Application-specific engine and transmission mounting brackets

• Performance polyurethane bushings in the selected hardness configuration

• Associated hardware supplied with the kit

Important: The BB1K2 is an engine and transmission mounting kit, not a complete K-Series conversion package.

The engine, transmission, axles, ECU, wiring harness, shifter assembly, shift cables, and other supporting conversion components are not included unless otherwise specified.

Upgrade your Honda Prelude with the Hasport BB1K2 K-Series Engine Swap Mount Kit, designed to support compatible Honda K20 and K24 engines paired with Acura RSX or 2002–2011 Civic Si manual transmissions.

Featuring application-specific mounting components, performance polyurethane bushings, and precision-engineered construction, the BB1K2 provides the drivetrain stability and mounting support needed for a serious K-Series conversion.

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