5150 AutoSport Pro-Series Turbo Build Kit BMW S58 (Stage 1/2/Pro-Xtreme)

Overview

A comprehensive engine internals kit for BMW S58 engines, available in three stages (1,000 HP / 1,200 HP / 1,600 HP). Includes forged pistons (CP-Carrillo), connecting rods, ARP fasteners, high-performance bearings, and genuine BMW gaskets. The Pro-Xtreme stage adds cylinder sleeves for extreme durability. Designed for turbocharged applications; 5150 recommends O-ringing above 1,000 HP and professional installation.

Installation summary

Installing the 5150 AutoSport Pro-Series Turbo Build Kit on a BMW S58 engine requires expert-level mechanical skills and is strictly intended for professional engine builders due to the complexity of a complete internal overhaul. The process demands precision machine shop equipment for block preparation, especially when installing the cylinder sleeves included in the Pro-Xtreme stage, along with exact torque and angle measurement tools for the ARP fasteners. The most critical factor to monitor during assembly is precise bearing clearance measurement and ring gap sizing to ensure reliability under high-boost turbocharged conditions exceeding 1,000 horsepower. Because of the critical nature of these engine internals and the precision machining required, professional installation is strongly recommended to protect your investment.

AI-generated overview — always verify against the official install instructions.