MAHLE Motorsport Conrod (Connecting Rod) Bearings Set, Standard Size - BMW S63 & N63 V8 - F10 M5, F90 M5, F1X M6, F1X M8 - Performance Big-End Bearings

High-strength Connecting Rod Bearing Shell Kit for BMW V8 S63 and N63 - Standard Journal by MAHLE Motorsport

Protect your BMW V8 bottom end with MAHLE Motorsport rod journal shells engineered for endurance, fast-road and track use. This premium big end shell kit keeps oil film stable at high load, controls clearance precisely and resists fatigue under heat and rpm. Ideal for preventative maintenance, refreshes and full engine builds on F10 M5, F90 M5, F1X M6 and F1X M8 platforms using S63 or N63 powerplants.

• Direct replacement shells for BMW S63 and N63 V8 applications including F10 M5, F90 M5, F1X M6 and F1X M8
• Complete eight-cylinder set supplied
• Standard size for use with stock, unground crank pins
• Manufactured in the UK with motorsport-proven materials and processes

Why enthusiasts choose this bearing solution

Built by the same specialists who supply top-tier race series including Formula 1, Le Mans, NASCAR, MotoGP, WRC and DTM, these shells deliver remarkable durability and consistency in high-output BMW V8s. We install them in-house on customer cars at MJ Modifications and the results have been superb for both daily driven builds and hard-use track projects. Quiet operation, stable oil pressure and long service life are the common feedback.

Material and construction advantages

Each shell features a robust steel back, a cast bronze intermediate layer and MAHLE’s VP2 lead indium overlay. This combination offers:

• Exceptional fatigue resistance compared to typical aftermarket race shells
• Outstanding conformability and embed ability to protect the crank journals
• Reliable oil wedge stability during sustained high-load operation

Not to be confused with generic sintered tri-metal bearings that rely on a softer lead tin overlay. VP2 lead indium overlay remains a benchmark choice for professional motorsport engine programs seeking superior strength and scuff resistance.

Optimised clearances for power and protection

Nominal target clearance of 55 micron with a 43 to 57 micron working window. Clearances are computed using MAHLE Motorsport design software that models housing swell, bearing load, oil film thickness and friction losses to balance reliability with performance.

Best for

• Bottom end refresh and rod shell replacement on BMW S63
• N63 connecting rod shell service during rebuilds
• Track-day, fast-road and tuned M5, M6 and M8 builds needing dependable big end shells
• Owners wanting a UK-made, motorsport-grade bearing package

Compatibility

Engine families: BMW S63 and BMW N63. Typical applications include:

• BMW F10 M5 - S63
• BMW F90 M5 - S63
• BMW F1X M6 - S63
• BMW F1X M8 - S63

If you are unsure about suitability for your exact year or variant, contact us for guidance.

What is included

• One full set of connecting rod bearing shells for eight cylinders
• Standard diameter shells for use with unground crankshaft journals

Fitting and support

Professional installation is recommended. MJ Modifications offers in-house fitting in Warwickshire. Request a quote at info@mjmodifications.co.uk and our team will advise on best practices, torque specs, clearances and consumables for your build.

Why buy from MJ Modifications

• BMW V8 specialists with extensive S63 and N63 experience
• Proven in our own customer projects with excellent reliability and oil control
• Straightforward advice for road, fast-road and circuit use

Search terms to help you find the right product

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