SPEC P‑Trim super twin‑disc clutch kit for BMW 440i (B58; 2015–2020) is a model‑specific multi‑disc upgrade intended for higher torque applications and enhanced drivability over stock clutches. The twin‑disc layout increases friction surface area to improve heat tolerance and service life in modified powertrains, and the kit installs as a direct replacement for vehicles equipped with the B58 engine platform.
Spec 15-20 BMW 440i B58 P-Trim Super Twin Disc Clutch Kit