5150 AutoSport Pro-Series Turbo Build Kit, BMW S55 — Multi-Stage Engine Internals

Name: 5150 AutoSport Pro-Series Turbo Build Kit, BMW S55 — Multi-Stage Engine Internals
Brand: 5150 Autosport

Expert installMPN: 5150-TBK-S55-700

Set your vehicle to confirm fitment — see full vehicle fitment

From $4,449.99

Where to buy

Kies Motorsports$4,449.99
In Stock
Calculated at checkoutPrice confirmed Aug 28, 2026View (opens Kies Motorsports in a new tab)

Overview

Comprehensive engine internals kit for turbocharged BMW S55 applications, available in three stages (700 HP, 1,000 HP, and 1,800 HP Pro-Xtreme). Includes forged pistons (CP-Carrillo), connecting rods (Manley Performance or CP-Carrillo), ARP head studs, high-performance bearings, and genuine BMW gaskets. Pro-Xtreme stage adds cylinder sleeves for extreme duty. Requires professional installation; O-ringing recommended for applications exceeding 1,000 HP.

Specifications

Type: Engine Internals
Engine Codes: S55
HP Gain: 700–1,800 (stage-dependent)
Material: Forged aluminum (pistons), steel (rods), cast iron (sleeves)
Emissions Sensitive: Yes

Vehicle Fitment
8 configurations

BMW M3Likely fits — confirm with retailer(F80)— Competition
S55
2016–2018
BMW M3Likely fits — confirm with retailer(F80)
S55
2015
BMW M3Likely fits — confirm with retailer(F80)— CS
S55
2018
BMW M4Likely fits — confirm with retailer(F82)— CS
S55
2018–2019
BMW M4Likely fits — confirm with retailer(F82)— Competition
S55
2016–2020
BMW M4Likely fits — confirm with retailer(F82)
S55
2015
BMW M4Likely fits — confirm with retailer(F82)— GTS
S55
2016
BMW M4Likely fits — confirm with retailer(F83)— Convertible
S55
2015–2020

Installation summary

This comprehensive multi-stage engine internals kit for the BMW S55 requires expert installation and at least ten hours of dedicated shop time by an experienced BMW technician. The process involves complete engine teardown, precision machining, and meticulous clearance checks for the forged CP-Carrillo pistons, upgraded rods, high-performance bearings, and ARP head studs. Particular attention must be paid to cylinder preparation and correct torque sequences, with custom block machining or O-ringing highly recommended for high-boost setups exceeding 1,000 horsepower. Because of the extreme precision and specialized engine-building techniques required to properly assemble this kit, professional installation is strongly advised to ensure long-term reliability and performance.

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

SpeedSpec may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. SpeedSpec is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.