Mazda MX-5 ND 2.0 SkyActiv 8HP45 N55, 8HP45R M235i Racing Adapter Kit - Adamat

Mazda MX-5 ND 2.0 Skyactiv to BMW ZF 8HP45 Swap Kit

Prepare your Mazda MX-5 ND 2.0 Skyactiv for a modern 8-speed automatic swap with this complete adapter kit for the BMW ZF 8HP45 transmission. This kit is designed to connect the Mazda 2.0 Skyactiv PE / P51B engine to a BMW ZF 8HP45 automatic transmission, originating from BMW N55 applications, among others.

If you want to install a BMW ZF 8HP automatic transmission behind a Mazda MX-5 ND 2.0 Skyactiv engine, this adapter kit provides the foundation for a strong, modern, and reliable conversion. The kit is suitable for performance builds, as well as for street-oriented MX-5 projects where comfort, reliability, and ease of driving are important.

The BMW ZF 8HP45 is a modern automatic transmission that is attractive for powerful builds, as well as for drivers who prefer an automatic. This could be due to comfort, daily use, or physical limitations. This way, the MX-5 remains accessible and enjoyable to drive, without completely losing the car's sporty character.

Compared to older or standard automatic solutions, the ZF 8HP is a much more modern and refined transmission. The transmission shifts quickly and smoothly, has 8 gears, and features a long overdrive. This makes the car quieter at higher speeds, with lower RPMs and more comfort during longer drives or highway use.

This variant is developed for the Mazda 2.0 Skyactiv PE / P51B engine and is suitable for specific BMW ZF 8HP45 transmissions, including the 8HP45 N55 and 8HP45R M235i Racing variants. The included flywheel is made from a strong AlZnMg+Ti alloy and is designed for applications up to 1200 Nm of torque. The flywheel is equipped with a starter ring gear suitable for the original Mazda starter motor and is supplied dynamically balanced.

The adapter plate is made from strong AW7075-T651 aluminum and has a thickness of 15 mm. Together with the included mounting hardware, this kit forms a high-quality basis for a neat and robust 8HP conversion.

For a properly functioning 8HP conversion, suitable ECU and transmission control are required. The control system must support throttle blips and throttle cuts, so that the engine and transmission can work together effectively and the transmission can rev-match smoothly during shifting. This not only makes the conversion faster and stronger but also more refined and enjoyable to drive.

When using an ECUMaster EMU Black, a CAN TCU is always required for controlling the ZF 8HP transmission. The EMU Black controls the engine, while the CAN TCU controls the transmission.

A MaxxECU Race can be used to control both the engine and the transmission for supported first-generation ZF 8HP transmissions. Always check in advance whether the chosen 8HP45 variant is supported by the desired control system.

A suitable solution for operating the transmission may also be necessary, such as an adapter plate for mounting a BMW F-Series automatic shifter. Depending on the chosen setup, additional parts may be required for mounting, electronics, cooling, driveshaft/PPF connection, and transmission mount.

Suitable for:

• Mazda MX-5 ND 2.0 Skyactiv
• Mazda 2.0 Skyactiv PE engine
• Mazda P51B engine
• BMW ZF 8HP45 / GA8HP45Z from BMW N55 applications
• BMW ZF 8HP45R S55 M235i Racing

Please note:

• Always check the exact transmission code before ordering
• This kit is intended for Mazda 2.0 Skyactiv PE / P51B engines
• Not intended for Mazda MX-5 NA/NB with B6 or BP engines
• ECU, transmission control, automatic shifter, wiring harness, and cooling are not included, unless otherwise stated
• Depending on the chosen setup, additional modifications may be necessary
• Check in advance whether the chosen transmission is suitable for the desired ECU/TCU control
• Proper tuning of engine, transmission, and throttle control is important for smooth shifting and rev-matching

Technical specifications:

• Engine application: Mazda 2.0 Skyactiv PE / ND / P51B
• Transmission application: BMW ZF 8HP45 N55 and 8HP45R M235i Racing
• Adapter plate: AW7075-T651 aluminum
• Adapter plate thickness: 15 mm
• Flywheel material: AlZnMg+Ti alloy
• Flywheel weight: 2.9 kg
• Maximum specified torque load on flywheel: 1200 Nm
• Starter ring gear: suitable for original Mazda starter motor
• Flywheel: dynamically balanced

Additional parts for the conversion:

• Suitable ECU for engine control
• Suitable transmission control for the chosen ZF 8HP45 variant
• CAN TCU when using ECUMaster EMU Black
• MaxxECU Race for supported first-generation ZF 8HP applications
• BMW F-Series automatic shifter or suitable shifter solution
• Adapter plate for BMW F-Series automatic shifter
• Suitable transmission cooler and lines
• Modified driveshaft or PPF solution, depending on the setup
• Transmission mount, depending on the setup
• Professional tuning of engine and transmission control

This Mazda MX-5 ND 2.0 Skyactiv to BMW ZF 8HP45 swap kit is a high-quality solution for anyone wanting to install a modern 8-speed automatic transmission behind a Mazda Skyactiv engine. Ideal for performance builds, as well as for drivers seeking a more comfortable, accessible, and modern automatic transmission solution.