To Pin Or Not To Pin, That is the Option, S55 Crank Hub Kits
S55 Billet Pinned Crank Hub – RKAutowerks
CRANK HUB SINGLE PIECE UPGRADE I BMW S55 I N55 – MMR Performance
MMR Performance BMW S55 / N55 One-Piece Crank Hub Upgrade Kit - 4-Pin, Performance
MMR Performance BMW S55 / N55 One-Piece Crank Hub Upgrade Kit – Silicon Valley Bimmer
Issues relating to the standard three-piece crank hub on the S55 engine
INSANE PERFORMANCE BMW S55/N55 CRANK HUB UPGRADE KIT / 4 PIN SOLUTION - Underground Division
S55 1 Piece 4 Pin Crank Hub – NRW-Design
⭐BMW S55 M3/M4 One Piece Crank Hub / CrankHub /4 pin Kit, Insane Performance
MMR Performance One-Piece Crank Hub Upgrade Kit - BMW S55 / N55
IND MMR Performance BMW S55 / N55 One-Piece Crank Hub Upgrade Kit Options - BMW M3 and BMW M4 Forum