There will be eternally be something special about pushing down on a clutch, swapping a cog and releasing your left foot and pushing into the power pedal.
It's the feeling.
Can retrofitting technology introduced on the F8x M3 enhance the 420G?
In this Special Series, I bust some myths, I document the procedures, chat about the less than stellar BMW M manual transmission history and Ryan & I give you our driving impressions.
Click, click, BOOM!
Cheers,
- Matt / @m3_epoustouflant
The flange is a self-locking, sealed design: it locks over the carbon tube.
It eliminates all probabilities for the tube to spin free of the flange, no matter the torque.
Machined from 7075 forged aluminum. The flange is weight optimized and anodized for corrosion resistance.
Each driveshaft is individually tested on YFCM's proprietary machine. They are spun to over 8000rpm as a complete assembly.

Installation Procedures
This specific journal entry covers the preliminary checks, while-you're-in-theres, recommended hardware and installation notes along with final validation checks to fit the the carbon driveshaft to your SMG3 and 6spd E46 M3.
M. Lee is the man behind YFCM Composites Technologies and the patent holder to the signature technological innovations.
He also operates an industrial automation company in Taiwan. He used his knowledge to develop proprietary stress testing equipment specific to automotive carbon tube applications.
YFCM has been the manufacturer all along for the MFactory V2 that was acclaimed by 500+ M3 V8 owners for years.