Maximize your N55 or S55 engine's performance with Ferrea Valve Springs and Retainers, precision components crafted from chromoly alloy. These springs undergo special thermal treatment, ensuring exceptional durability even in extreme racing conditions. Addressing issues like valve binding, breakage, and float, Ferrea valve springs are meticulously heat-treated and stress-relieved, providing stability for high-lift and high-RPM racing engines while minimizing load loss. Precision CNC machined titanium retainers offer superior strength and stability. Ferrea's Spring Seat Locators, made from 4140 chromoly alloy, guarantee precise tolerances and a flat, parallel spring pad with a hard Nitride surface treatment for exceptional toughness and anti-wear characteristics. Please note that installation requires the expertise of an engine builder.
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Increase the power output of your N55/S55 engine with the high-performance Ferrea valve kit. Renowned as the industry's most reliable extreme-duty valves, they're meticulously crafted from aerospace-grade alloys, employing an exclusive two-step slow forging process for optimal grain flow and material structure integrity. A 48-hour heat treatment and stress-relieving process enhance molecular integrity. The valves feature avionics-quality hard chrome and a specially applied hard tip. Standard size: 32mm intake / 28mm exhaust, with a triple groove valve design. Compatible with factory valve locks ("Valve Keepers"), the kit includes 12x Intake Valves and 12x Exhaust Valves for a comprehensive engine upgrade!
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The experts at 5150 Autosport have curated an all-encompassing engine build kit packed with forged internals to prepare your BMW S55 engine for high horsepower and high boost levels! This kit is equipped to handle up to 1000 horsepower! Kit Contents - ARP 2000 Head Stud Kit - Cometic Multi-Layer Steel Head Gasket - CP-Carrillo Forged Piston Set - SP Components Connecting Rod Set - ARP Connecting Rod Bolts - 5150 High Performance Rod Bearing Set - 5150 High Performance Main Bearing Set
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Introducing the 5150 AutoSport Pro-Series 1500 Turbo Build Kit 5150 has curated a comprehensive kit of internal engine components to prepare your S55 engine for elevated levels of horsepower. Engineered to handle up to 1600 horsepower, this kit establishes itself as the epitome of dominance for those seeking unparalleled power out of their S55 engine! Designed to redefine boundaries, these carefully chosen internals serve as a testament to our unwavering commitment to excellence. Kit Contents: Cometic Multi-Layer Steel Head Gasket 5150 Xtreme Duty Cylinder Sleeve Set CP-Carrillo Forged Piston Set Coated Domes Coated Skirts Heavy-Duty Piston Pins CP-Carrillo Forged Connecting Rods 5150 High-Performance Rod Bearing Set 5150 High-Performance Main Bearing Set
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The 5150 AutoSport Pro-Series Turbo Build Kit: An all-inclusive arsenal of internals custom assembled to prepare your BMW S55 engine for high horsepower, turbocharged performance.
