BMW N43 N45 4Cyl - Lightweight Street Flywheel [For BMW E81, E82, E90, E92]
BMW N43 N45 4Cyl - Lightweight Street Flywheel [For BMW E81, E82, E90, E92]

BMW N43 N45 4Cyl - Lightweight Street Flywheel [For BMW E81, E82, E90, E92]

Regular price¥71,700
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  • World Wide Shipping available.
  • Assembled & Customised to order.

CNC Lightened Flywheel Fits BMW N43 N45 engines.

Fits Standard Clutch Fitment and N52 clutch

Significantly reduce the high rotating mass of your drivetrain and allow your engine to rev more quickly. This makes shifting faster and rev-matching incredibly easy.

Dramatically improved engine response and acceleration without sacrificing daily driveability. These are our street versions of the lightweight flywheel, race versions coming soon. 

The flywheel weight is properly distributed for maximum strength, good heat tolerance, and rigidity.

Weight is 4.4kg (10lbs) Down from the OEM Weight of 10.8kg (24lbs+).

No FW bolts are included. Use BMW OEM M12x28 P/N 1227805885

Clutch Fitment

OEM Clutch & Pressure Plate Fitment

Such as BMW P/N 21207564979

Designed by RHD Engineering

Fits the following vehicles:

2004–2011 E81/E87 116i
2006–2011 E90/E91 316i

2007-2011 E81/E87 116i

2007-2011 E90/E91/E92/E93 318i
2008-2011 E81/E87/E88 118i

2007-2011 E81/E82/E87/E88 120i
2007-2011 E90/E91/E92/E93 320i
2007-2009 E60/E61 520i

Most of our products are made-to-order before being shipped out.

This product is for off-road use only.

Redux Racing is not responsible for damage to your car or engine, or resultant injuries to persons.

Use at your own risk.

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Assembled In-House

Every kit is designed and assembled in our workshop to ensure it matches our strict standards and performs perfectly.

Proven & tested

Street, drags, show and track, since 2012 our kits have clocked thousands of laps and millions of miles.

money back guarantee

If you're not 100% satisfied you can send it back for a full refund, including shipping costs, for 12 months after purchase.

LS1 ITB Kit

SEMA 2022 & 2023.

Let the crowd decide. 2023 @Built.By.Rich and 2022 @goodshow_aa

BMW M42 ITB Kit
perfected for performance

Thousands of hours of research, hundreds of designs and dozens of tested vehicles, we make sure all and every kit performs to a world class standard.

smoother idle

By eliminating cylinder cross-talk, very aggressive cams can be run without low RPM stalling and with reduced lumpiness.

Instant throttle response

By giving the intake air a short and direct path into the chamber, the throttle response becomes lightning quick.

increased power

By allowing each cylinder to consume the same and maximum amount of air, your engine can be run at its optimum performance.

GM LS3 ITB KIT
Engineered with precision.

Each model kit has undergone serious testing with proven results

BMW M50 / M52 ITB Kit
Designed with Intention

Every kit bolts directly on, no fabrication and no additional brackets required.

Easily assembled with basic hand tools, be up and running in a matter of hours.


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