PMC Motorsport flywheel Honda K20 K24 – 6-speed manual BMW M57N ZF GS6-53DZ HGD JGA HGA / M47N GS6-37DZ – Ø240 mm / 9.45"

Custom PMC Motorsport flywheel designed to mate the Honda K20 / K24 engine with the ZF GS6-53DZ HGD / JGA / HGA 6-speed manual gearbox found in BMW M57N / M57N2 diesel applications (E60 / E61 530d, E46 330d) – including xDrive GS6X53DZ variants – as well as the ZF GS6-37DZ gearbox from BMW M47N / M47N2 models. The flywheel works in conjunction with the PMC Motorsport F0BMW-K (20 mm) universal gearbox adapter plate.

Are you planning a Honda K20 / K24 swap in your BMW (E30, E36, E46, E34, E39, E90, E91, E92, E60, E61, E81, E82, E87) or another rear-wheel drive chassis, such as a Nissan S13 / S14 / S15 or Mazda RX-7 / RX-8? The PMC Motorsport flywheel paired with the adapter plate enables you to integrate a heavy-duty 6-speed BMW gearbox into your build.

The PMC Motorsport flywheel is CNC machined from aluminum and features a replaceable friction surface. Every single flywheel is inspected and dynamically balanced prior to shipping. Engineered for a 240 mm (9.45") BMW OE type clutch pressure plate from the GS6-53DZ. This rigid single-mass flywheel (SMF) delivers sharp and instantaneous engine throttle response.

PMC Motorsport components are synonymous with precision and premium quality. A design process based on 3D scanning and quality control using a coordinate measuring arm ensure a perfect fit. Manufacturing on state-of-the-art CNC machinery guarantees flawless concentricity between the engine and transmission, which is crucial for the longevity of the drivetrain.

Additional information

Installation manual

The flywheel requires the use of the PMC Motorsport F0BMW-K gearbox adapter plate (thickness 20 mm / 0.78"). Installing the flywheel requires genuine Honda OE 90011-RBD-000 crankshaft bolts (not included in the kit), torqued to 118 Nm (87 lb⋅ft) using medium threadlocker. Mount the clutch fork in the lower position on the release bearing (when using a dual-position release bearing), and replace the original pivot ball with the pivot pin supplied in the kit. The original Honda K20 / K24 starter motor (OE, not included in the kit) must be used.

Frequently Asked Questions

Which engines does this flywheel fit?

Honda K20 engines (K20A, K20A1, K20A2, K20A3, K20A4, K20A6, K20Z1, K20Z2, K20Z3, K20Z4) and Honda K24 engines (K24A1, K24A2, K24A3, K24A4, K24A8, K24Z1, K24Z2, K24Z3, K24Z4, K24Z5, K24Z6, K24Z7).

Which gearboxes does this flywheel fit?

The 6-speed manual ZF GS6-53DZ transmission from BMW M57N / M57N2 in variants HGA (THGA) – E46 330d, HGD (THGD) and JGA (TJGA) – E60 530d, the xDrive GS6X53DZ variants HGB, HGE, and JGB, as well as the ZF GS6-37DZ transmission from BMW M47N / M47N2 (THES, TJEM) and its xDrive variant GS6X37DZ (THRD, THRJ) from the BMW E83 X3 2.0d.

Is a gearbox adapter plate required?

Yes. The flywheel works with the PMC Motorsport F0BMW-K universal gearbox adapter plate (20 mm), which is not included in the kit.

Which starter motor should be used?

The original Honda K20 / K24 starter motor (OE). The starter motor is not included in the kit.

Which clutch pressure plate fits the PMC flywheel?

A 240 mm (9.45") BMW OE type pressure plate, such as BMW OE 21 21 7 545 068 or Sachs Performance 883082.001243. For the GS6-37DZ gearbox, the BMW OE 21 21 7 512 083 pressure plate can be used. ACT / Spec / Tanaci clutches are also commonly used – any aftermarket pressure plate must match the BMW OE flywheel pattern (M57N / M57N2 / N54 / B58).

Which clutch disc should be used?

For the GS6-53DZ gearbox – a 240 mm clutch disc with a 32.5x35-26N spline (26 teeth), e.g. BMW OE 21 20 7 583 172. For the GS6-37DZ gearbox – a 240 mm clutch disc with a 26.5x29-22N spline (22 teeth), e.g. BMW OE 21 20 7 559 542. The clutch disc is not included in the kit.

What parts do I need to purchase separately for installation?

The PMC Motorsport F0BMW-K gearbox adapter plate, Honda OE 90011-RBD-000 crankshaft bolts, clutch pressure plate and clutch disc, release bearing with 2-position clutch fork (BMW OE 21 51 7 564 027), clutch slave cylinder (BMW OE 21 52 6 775 924 / 21 52 6 785 964 / 21 52 1 158 903 / 21 52 6 766 277), and an original Honda K20 / K24 starter motor. These parts are not included in the kit.

What is included in the kit?

The custom PMC Motorsport flywheel with replaceable friction surface, pressure plate mounting bolts, and a clutch pivot pin – replacement for BMW OE 21 51 1 223 328.

Does the PMC flywheel need additional balancing?

Every PMC Motorsport flywheel is balanced prior to shipping. When assembling with custom aftermarket clutch kits, an additional balance check of the entire assembly is recommended.

Can I purchase only the flywheel or individual components?

Yes. Every component of our kits can be purchased separately.

Does the price include customs duty for shipments outside the European Union?

No. The product price and shipping quote do not include customs clearance fees, import duties, or local taxes that may apply in the recipient's country.

Can I purchase with 0% VAT?

Yes, if you are a registered B2B customer outside of Poland with an active EU VAT number (validated via VIES) or if placing an export order outside the EU.

Is the included manual sufficient to complete the installation?

The manual covers mating the engine to the transmission outside the vehicle chassis. Depending on your car chassis, additional custom modifications may be required: engine mounts, crossmembers, firewall clearance, transmission tunnel modifications, driveshaft sizing. We strongly recommend professional installation.

Please note that a lightweight single-mass flywheel delivers uncompromising throttle response by eliminating factory dual-mass damping components. This results in a more direct drivetrain connection, which can naturally increase the audible operating noises of the transmission gears. This is a normal and sought-after characteristic in performance and motorsport applications resulting from the rigid mechanical connection between the engine and the drivetrain.