Clean and resurface the engine block and cylinder head to ensure they are flat and free from debris

CNC Coolant Pipe / Hardware

and a Racetech FIA-approved Pro International 6-point harness—giving you everything required for a secure

Available in matched and balanced sets of 8

Rated for up to 9500 RPM

BMW S14 400 Series NA Power Pack SUP-HPVK Clean and resurface the engineThe 400 Series Power Pack is the one click forged internals kit for naturally aspirated BMW S14B23 engines, delivering modern performance for this legendary engine. Designed for enthusiasts aiming for 400HP, this kit is a major upgrade over aging OEM components, offering improved strength, durability, and reliability. Featuring Arias Forged Pistons (94mm bore, 11: 1 compression) and SP Components Connecting Rods, this kit is built for high revving,