BMW Internal Engine Parts for BMW Z4 M Roadster S54 (2003-2008)

Upgrade your engine build with Turner's WPC-treated Race Series Bearings, engineered for serious performance enthusiasts. Starting with ACL’s high-performance bearing shells, these Race Series bearings are built to withstand extreme RPMs and stress. Utilizing a "Duraglide" tri-metal construction and a high-strength overlay plate, these bearings offer superior oiling and heat resistance for high-RPM operation.

Our WPC-treated bearings take ACL’s already impressive design and enhance it even further. The WPC treatment process strengthens and smooths the bearing surface by firing high-speed, ultra-fine particles at the bearing shells, reducing friction and improving durability. This advanced surface treatment ensures smoother operation and improved heat dissipation, which are critical for any high-performance engine.

Key Features:

Duraglide Tri-Metal Construction: ACL's Race Series bearings feature a high-strength overlay for enhanced performance. Optimized Oiling: Designed to promote better oil flow during high-RPM conditions. Precise Fitment: Manufactured with OEM-level precision using micron tolerance machining. WPC-Treated for Strength: Surface treatment adds strength and reduces friction for improved engine performance. No Flash Plating: Allows for better heat transfer and bearing retention. Thermal Discharge Process: Smoother, stronger components through WPC’s unique thermal discharge technology. Enhanced Heat and Friction Resistance: Built to combat the biggest enemies of high-performance engines. Don’t settle for standard bearings—choose Turner Motorsport WPC-treated Race Series Bearings for the ultimate engine performance upgrade. Perfect for your next engine rebuild or rod bearing service!

Unlock the full potential of your S54’s valvetrain with our High Performance Cam Followers/Rocker Arms, built for precision, durability, and reliability in high-revving performance engines.

Crafted from forged chromoly steel and finished with a diamond-like carbon coating, these cam followers are engineered to deliver exceptional strength, reduced friction, and outstanding wear resistance, ideal for demanding street or track use. Each unit is precision-ground for consistent clearances and smooth, stable valvetrain motion at all RPMs. Despite heavy-duty construction, our design retains the same weight as the factory rocker arm, preserving OE valvetrain geometry and balance while offering superior longevity and performance.

Rocker arms wear in conjunction with the camshafts, meaning the two must be replaced simultaneously. Aftermarket and performance camshaft options (Schrick, CAT-Cams, etc.) are typically ground from softer blanks and, as a result, cannot be used with factory rocker arms. We tested our performance cam followers with aftermarket camshafts to validate compatibility, ensuring smooth, reliable, and safe operation under demanding conditions.

Features:

Forged chromoly construction for maximum strength and durability Diamond-like carbon-coated surface reduces friction, extends service life, and permits compatibility with aftermarket and performance camshaft options Precision-ground tolerances ensure consistent and quiet operation OEM weight match maintains valvetrain balance and reliability Superior wear resistance for performance and endurance applications NOTE: Rocker arms are wear items and must be replaced alongside a new set of camshafts, regardless of profile or manufacturer. Installing a new set of rocker arms onto a used set of camshafts is NOT recommended.

Kit Contents:

24 DLC-Coated Rocker Arms (required to complete both camshafts) Product Development: Our Turner Performance Rocker Arms are the result of advanced engineering, testing, and quality assurance by Turner’s Research & Development team. Every stage of development employs FARO laser scanning, SolidWorks 3D CAD modeling, and in-house rapid prototyping for precise fitment and design validation. Performance and durability are proven through Mustang AWD 500 SE dyno testing and Superflow SF-750 Flowbench analysis, ensuring each component meets Turner’s uncompromising standards for performance and quality.

Unlock the full potential of your S54’s valvetrain with our High Performance Cam Followers/Rocker Arms, built for precision, durability, and reliability in high-revving performance engines.

Crafted from forged chromoly steel and finished with a diamond-like carbon coating, these cam followers are engineered to deliver exceptional strength, reduced friction, and outstanding wear resistance, ideal for demanding street or track use. Each unit is precision-ground for consistent clearances and smooth, stable valvetrain motion at all RPMs. Despite heavy-duty construction, our design retains the same weight as the factory rocker arm, preserving OE valvetrain geometry and balance while offering superior longevity and performance.

Rocker arms wear in conjunction with the camshafts, meaning the two must be replaced simultaneously. Aftermarket and performance camshaft options (Schrick, CAT-Cams, etc.) are typically ground from softer blanks and, as a result, cannot be used with factory rocker arms. We tested our performance cam followers with aftermarket camshafts to validate compatibility, ensuring smooth, reliable, and safe operation under demanding conditions.

Features:

Forged chromoly construction for maximum strength and durability Diamond-like carbon-coated surface reduces friction, extends service life, and permits compatibility with aftermarket and performance camshaft options Precision-ground tolerances ensure consistent and quiet operation OEM weight match maintains valvetrain balance and reliability Superior wear resistance for performance and endurance applications NOTE: Rocker arms are wear items and must be replaced alongside a new set of camshafts, regardless of profile or manufacturer. Installing a new set of rocker arms onto a used set of camshafts is NOT recommended.

Kit Contents:

24 DLC-Coated Rocker Arms (required to complete both camshafts) Schwaben Magnetic Valve Shim Tool Wiseco 8.9mm Valve Adjustment Shim Set Schwaben Feeler Gauge Set Product Development: Our Turner Performance Rocker Arms are the result of advanced engineering, testing, and quality assurance by Turner’s Research & Development team. Every stage of development employs FARO laser scanning, SolidWorks 3D CAD modeling, and in-house rapid prototyping for precise fitment and design validation. Performance and durability are proven through Mustang AWD 500 SE dyno testing and Superflow SF-750 Flowbench analysis, ensuring each component meets Turner’s uncompromising standards for performance and quality.

Still looking for more power after bolt-ons? High performance camshafts from Schrick are the way to go. These cams are a direct replacement for the stock cams and give a solid 15+ horsepower boost at the top end and great midrange torque increases too! More gains can be expected with intake and header upgrades and custom software tuning. A slightly lumpy idle is expected at cold start but will be smooth once at operating temperature. This set is just a great all-around cam upgrade for the S54!

These Schrick cams were initially developed for the M3 CSL but they also work great on the US and other non-CSL S54 engines as well. With more duration they are a great match to high flow headers, no cats, or CSL intake manifold upgrades. These are the new "cast" cams from Schrick which require new rocker arms (Schrick recommended or BMW part #11337833259). Professional installation is a must due to the intricacies with the double VAN0S.

Schrick Technical Information / Specs

This item fits the following BMWs:

• 2001-2006 E46 BMW M3
• 2001-2002 Z3 BMW M Roadster M Coupe
• 2006-2008 E85 BMW Z4 M Roadster M Coupe

SEE T#338745 BMW S54 3.2L Schrick Camshaft Set 280/272 12.5mm Lift is the perfect performance upgrade for enthusiasts seeking to enhance their engine's capabilities. With over 40 years of experience, Schrick is dedicated to producing high-quality camshafts that deliver exceptional power and reliability. Designed for both street and track applications, these camshafts offer an impressive balance of performance and drivability. The intake cam features a duration of 280, while the exhaust cam has a duration of 272, with a valve lift of 12.5mm. These new "cast" cams from Schrick closely resemble the stock E46 M3 CSL cams, ensuring a smooth idle and a significant increase in horsepower throughout the RPM range. With a peak gain of 15 horsepower and no loss in low-end torque, these camshafts are a top choice for BMW enthusiasts.

Key Benefits:

• Enhanced Power: Delivers a peak gain of 15 horsepower.
• Smooth Idle: Maintains a factory-like idle quality for everyday driving.
• Linear Power Increase: Provides a steady increase in horsepower from midrange to redline.
• Compatibility: Designed to fit the BMW S54 engine with new rocker arms required.
• High-Quality Construction: Crafted from top materials for strength and durability.

The BMW JE Piston S54B32 11.5:1 Piston Single 86.50mm is a high-performance piston designed to optimize the power and efficiency of BMW S54 engines. With an 11.5:1 compression ratio, this piston is ideal for those seeking to push the performance limits of their vehicle. Built from top-quality materials, it offers superior durability, making it suitable for both street and track applications. Available at Turner Motorsport, this piston ensures enhanced reliability and a precise fit for BMW S54 engines.

This piston is designed to withstand the demands of high-performance driving while improving overall engine combustion and efficiency. It is an excellent choice for BMW owners looking to improve engine performance, longevity, and power output. Detail: 86.50 mm Bore – 1.220 in. CH, -9.40 CC

The BMW JE Piston S54B32 9:1 Piston Single 87.00mm is a premium performance upgrade designed for BMW enthusiasts looking to enhance engine durability and output. Specifically crafted for the BMW S54 engine, this piston ensures optimal compression and power, providing the necessary strength to handle high-performance driving conditions. Available through Turner Motorsport, this piston is engineered to meet the demands of both street and track driving, offering exceptional reliability.

The precision-crafted piston ensures a perfect fit, allowing for improved combustion efficiency and overall engine performance. It's the ideal choice for drivers seeking to boost their BMW’s power and longevity.