Spec your kit

S85 SMG3 OE+ Lightweight Flywheel

Specifications

Made in England
OE+ design:
- Compatible with SMG3 OE clutch or equivalent
- Weight reduction optimized for street-ability and durability.
- Retains original clutch pedal pressure.
- No tuning required.
- No extra NVH.
- No idle chatter as the SMG3 pulls the throwout bearing at idle for an extended period.
Construction:
- CNC machined
- Forged high carbon steel
- Dynamically balanced
Weight:
- OEM: 14.3 kg / 31.5 lbs
- TTV: 8.5 kg / 18.73 lbs
The complimentary OE clutch kits includes a brand new replacement clutch and throwout bearing. As of July 2025, I will include the pressure plate bolts as they are one-time use per BMW. You will need to source the ARP flywheel bolts.

Shipping calculated at checkout.

OE Clutch Kit

The kit includes an OE replacement clutch and throwout bearing.

New bolts are required

The SMG3 OE+ lightweight flywheel is designed to fit with 9x Grade 12.9 bolts in M12x1.5x35mm dimensions. I recommend the ARP bolt kit #: 664-1003

"I was impressed by how smooth it works and how fast it was through the RPMs."

@tima.392

Hear it

build journal

The anxiety, and reality.

On most M cars, lightweight flywheels are a controversial modification subjective to noise & daily drivability tolerances.

I was anxious to fit this to my S85 SMG3. It is, after all, just a manual transmission with an hydraulic pump!

Not exactly.

In this Special Series, I document the unboxing, installation and driving impressions with this flywheel fitted.

Cheers,
- Matt

Read the series