BMW F10 F90 M5 S63TU/ N63 Custom Forged 4340 Crankshaft ….
OEM Stroke
OEM Sizing
“Investment 4340 Forging”..
If you are looking for a Cheaper option to our “Ultimate Billet” than here it is, BMW F10 F90 M5 S63TU 4340 Forged Crankshaft…
Heat Treated to 55-60HRC
Crankshafts are now Available..





