PMC Motorsport Lightweight aluminum (rigid / single-mass) custom flywheel for BMW N54 N54B30 135i 335i 535i engine (8-mounting bolts) - 6150g / 13.56lb

Lightweight aluminum rigid flywheel for BMW N54 N54B30 135i 335i 535i engine (8-mounting bolts) engines

The lower inertia of a lightweight flywheel results in significantly better and faster throttle response, improving the car's acceleration. Although it does not increase engine power, it reduces losses in the drivetrain, which translates to slightly higher power at the wheels. Lightweight flywheels perform exceptionally well on twisty tracks, as the car regains speed lost in corners much faster.

When designing our flywheels, we pay great attention to their weight – PMC flywheels are created for both tuning enthusiasts and motorsport car builders, hence selecting the right mass is crucial.

Inertia vs Acceleration

A flywheel stores kinetic energy. The heavier it is, the more energy is required to set it in motion.

Too light: The engine revs up instantly, which is desirable in sports, but drops just as quickly. This can make smooth gear changes difficult in daily use.

Correctly selected: Allows for faster throttle response while maintaining enough energy for the engine to operate properly after releasing the accelerator pedal.

Idle Stability

A lightweight flywheel has a lower capacity to dampen engine irregularities (especially in 3- or 4-cylinder units).

If the weight is too low, the engine may idle roughly, jerk, or even stall during sudden declutching (e.g., when approaching traffic lights).

Appropriate mass provides an "inertia buffer" that maintains crankshaft rotation between the power strokes of individual pistons.

Ease of Starting (Torque)

A heavy wheel helps to set the entire vehicle mass in motion from a standstill.

With an extremely light wheel, the driver must apply more throttle and operate the clutch more precisely to avoid stalling when starting.

Correct weight selection allows the car to maintain its civilized character, enabling smooth starts on hills or in traffic jams.

Compatibility: PMC custom flywheels are designed to work with OE BMW clutch kits or replacements matching the OE flywheel.

Clutch Disc: Designed for use with factory clutch discs compatible with your gearbox.

Replaceable Friction Surface: The PMC flywheel friction surface ensures durability and long-lasting operation. In case of wear, it is easy to disassemble, and replacement parts are available in our offer.

Original Starter Ring Gear: Galvanized ring gear with hardness identical to OE flywheels, ensuring reliability and full cooperation with the OE starter.

Balanced Before Shipping: Each PMC flywheel is checked and precisely balanced before shipping. If you use a used or custom clutch kit, we recommend rebalancing the entire set.

PMC Performance Clutch – precise solutions for mechanical tuning and motorsport.

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BMW 3 COUPE (E92) 335 XI 306HP / 225KW [N54 B30 A, N55 B30 A] | 03/2007-02/2010
BMW 3 KABRIOLET (E93) 335 306HP / 225KW [N54 B30 A, N54 B30 B, N55 B30 A] | 05/2006-10/2013
BMW 3 TOURING (E91) 335 306HP / 225KW [N54 B30 A, N55 B30 A] | 03/2006-05/2012
BMW 3 TOURING (E91) 335 XDRIVE 306HP / 225KW [N54 B30 A, N55 B30 A] | 05/2008-05/2012
BMW 3 TOURING (E91) 335 XI 306HP / 225KW [N54 B30 A, N55 B30 A] | 09/2006-08/2008