E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
E46 M3 V2 Carbon Driveshaft by YFCM Composites
YFCM Composites LtD

YFCM-00032MT

E46 M3 V2 Carbon Driveshaft by YFCM Composites

  • Factory Direct
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Improved Response via Lightweight & 1 Piece Design

The major benefits to the YFCM carbon driveshaft are its lightweight and 1 piece construction. 

On the E46 M3, the OEM 2 piece steel driveshaft weights 8.5kg / 18.7 lbs, while the Carbon Driveshaft weights 5.4kg / 11.9 lbs. 

The reduced weight helps lower the initial moment of inertia, providing improved throttle response and noticeably easier clutch operations on 6spd equipped M3s. 

The 1 piece design retains the use of the flex disc on the transmission output shaft, but eliminates the need for a center support bearing. This bearing introduces further flex in the drivetrain and commonly fails on E46 M3s with higher mileage. 

The 1 piece designs improves the connected feel with the rear end of the E46 M3, which is known to be wobbly in factory form. 

Pre-Preg & Autoclaved Winded Carbon Tubes

The other significantly different and superior component of the Authentic "V2" is the carbon tube itself. It is smaller in diameter than the V3 to fit within the locking flange, and is sealed off to further reduce ungluing risks. The smaller diameter further reduces the moment of inertia. 

The carbon tube itself is winded from pre-preg & autoclave carbon fiber sourced from sourced from Toray Industries. The carbon work is superb, with a visible mix of various carbon patterns to optimize the durability of the tube & weight loss. 

The signature carbon tube is known for its yellow braided filament and is clearly identified with YFCM's logo & part number. 

As a result of superior carbon tube engineering & construction, the YFCM tubes do not have any glued on balancing weights. 

The Patented Locking Flange 

M. Lee holds multiple published patents for the flange in various countries, most importantly Germany and the US

The patented flange helps minimize the chance of the tube from spinning free of the joint. There has been no reported case of flange ungluing with the authentic YFCM product. 

Proprietary Testing Equipment

M. Lee also owns and operate an industrial automation company, from which he used his knowledge to develop proprietary stress testing equipment specific to carbon tube technology. 

Each driveshaft is individually crafted, spun to over 8000rpm and tested on YFCM's proprietary torsional stress machine to over 5500nm torque figures. 

Below are results from the proprietary testing equipment. Each driveshaft is tested, and I am currently discussing with YFCM to publish these results per order along with data on the OEM driveshaft.

For reference, most OEM 2 piece steel driveshafts have 2 to 3x times the measured vibrations compared to the YFCM "V2". 

Blue is the vibration value measured at the CV flange. Green is the vibration value measured at the Transmission output flange.

Specifications

  • Made in Taiwan 
  • Patented flange with locking mechanism to prevent shaft slippage
  • CNC machined & anodized flanges from 7075 forged aluminum 
  • Pre-preg & autoclave carbon fiber filament 
  • Signature yellow braided filament
  • Carbon sourced from Toray Industries
  • Tested & balanced beyond 8,000 RPM 
  • Vibration free 
  • 1 year replacement warranty 

Installation Notes

Professional installation is recommended. Professionals will taken around 3 to 5 hours depending on the condition of your M3. It requires removing the complete exhaust and heat shields.

Recommended new hardware:

  • 1x Flexdisc "guibo" (SKU:  26112226527)
    • 6x Standard CV flange / Diff bolt (SKU:  33217571990)
    • 6x Self Locking Nut for Guibo / Transmission flange (SKU: 07129900047)
    • 6x Hex Bolt for Guibo / Transmission flange (SKU: 26117635643)

    Clearances & Measurements to validate your installation

    CV Flange Telescopic Range

    The CV Flange is a commercially available product designed with a telescopic range.

    As the 1 piece carbon tube design is engineered to flex and move with the drivetrain, YFCM carefully engineered the tube length to match with the CV flange.

    It must have a 64mm / 2.52 inches distance between both points pictured. 

    Carbon Tube Clearances

    As the carbon tube has an increased diameter over stock and is made of carbon, careful attention to clearances and free range of movement of the tube must be validated. There should be at least 20mm / 0.8 inches separating the tube from any physical element across the driveshaft valley. 

    If you installation does not come within these specifications, you may have worn bushings across the drivetrain. I would recommend you inspect your bushings and mounts to ensure they are in proper condition. 

    You need to meet these clearances before completing the installation as it may otherwise lead to catastrophic failure of the tube. 



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