Carbon friction material grips faster and wears longer than factory brass for improved durability
Delivers smoother, more consistent shifts under heavy use on street, strip, or track
Superior heat and wear resistance for extended service life
Direct fit replacement with no transmission modification required
Backed by Synchrotech quality and shipped fast for quick installation
Summarized by Shop
The MF-TRS-05E39 Helical LSD E39/E46/E60/E92 is a carbon-lined synchro from Synchrotech, engineered for BMW transmissions. Carbon friction material grips faster and wears longer than factory brass, delivering smoother, more consistent shifts under hard use — on the street, strip, or track. Why upgrade to carbon synchros: