Manley Performance

Manley BMW N55/S55 37cc Platinum Series Dish Piston Set - 84.5mm Bore - 647005C-6

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SKU:
MAN647005C-6
UPC:
807298117911
MPN:
647005C-6
Availability:
Regularly stocked product
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MSRP: $1,140.05
$1,048.85
— You save $91.20
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Description

What is the recommended installation method for these pistons?
Professional installation is strongly recommended to ensure correct fitment and optimal performance of these 6-cylinder forged pistons.

How do these pistons improve engine performance?
Forged 2618 alloy and proven skirt profiles deliver extreme durability and reduced friction for enhanced power output.

Manley Performance Piston Sets - Forged - 6cyl, engineered with 2618 alloy forgings, deliver unparalleled strength for demanding motorsport applications with a score of 9 for racing competition. Featuring tool steel wrist pins and proven cam and barrel skirt profiles, these pistons ensure superior strength and reliability under extreme boost and high RPMs.

What Owners Say

Owners and enthusiasts consistently mention Manley pistons alongside top-tier brands like CP, Wiseco, and Ross when discussing premium forged piston options. The 2618 forging material earns specific praise, with builders noting they prefer Manley for personal projects. Real-world weight comparisons show Manley assemblies running approximately 46 grams lighter than OEM equivalents—a significant advantage for performance builds. Users appreciate that these pistons don't score cylinder walls during operation. Some builders have noted concerns about ring quality leading to premature oil consumption issues. Despite this criticism, Manley remains a trusted recommendation in the performance community, regularly paired with quality connecting rods for high-horsepower turbocharged and naturally aspirated applications.

Key Features

  • 2618 alloy forgings
  • proven cam and barrel skirt profiles
  • tool steel wrist pins
  • moly skirt coatings on select part numbers
  • Chrome Moly Wrist Pins
  • 9310 and Turbo Tuff/DLC alloys wrist pin upgrades

Why Choose the MAN Piston Sets - 6 Cyl

Delivers extreme durability for relentless track days and street abuse.

Achieves smoother engine operation and reduced friction for enhanced power.

Provides superior strength and reliability under extreme boost and high RPMs.

Transforms your engine's resilience, ensuring peak performance when you demand it.

Who Is This For?

Track / Autocross — 9/10
2618 alloy forgings offer extreme strength and reliability.

Drag Racing — 9/10
2618 alloy forgings provide unparalleled strength under extreme conditions.

Racing Competition — 9/10
Engineered for extreme conditions, high strength and reliability.

Street Performance — 8/10
Proven cam and barrel skirt profiles enhance performance.

Engine Performance — 9/10
2618 alloy forgings ensure strength and reliability.

Frequently Asked Questions

How do Manley forged pistons improve my 6-cylinder engine's performance for track use?

Manley forged pistons achieve extreme durability for relentless track days and street abuse. Achieving a usage score of 9 for "Track / Autocross", these pistons are engineered to transform your engine's resilience under demanding motorsport applications. You can expect superior strength and reliability when you demand peak performance.

Is professional installation required for these 6-cylinder Manley pistons?

Professional installation is recommended for these 6-cylinder Manley pistons. Confirmation with a qualified technician is advised to ensure proper fitment and optimal performance integration. This ensures your engine's components are assembled to the highest standards.

What is the primary benefit of upgrading to Manley forged pistons for my 6-cylinder engine?

Upgrading to Manley forged pistons delivers unparalleled strength and reliability under extreme conditions. Engineered with 2618 alloy forgings, they provide superior strength and reliability under extreme boost and high RPMs, far exceeding OEM capabilities. This makes them an invaluable upgrade for performance enthusiasts.

How can I confirm if these 6-cylinder Manley pistons will fit my specific vehicle?

Confirm fitment with your vehicle to ensure compatibility with these 6-cylinder Manley pistons. A qualified technician can assist in verifying the precise application. This guarantees the pistons will integrate seamlessly with your engine build.

What makes Manley forged pistons stand out in terms of material and construction for performance engines?

Manley forged pistons are constructed from 2618 alloy forgings and feature proven cam and barrel skirt profiles for enhanced engine operation. This advanced construction provides superior strength and reliability under extreme boost and high RPMs, making them ideal for demanding motorsport applications. Experience smoother engine operation and reduced friction for enhanced power.

Additional Resources

Official Manley Performance Product Page

Important Notices

⚠️ CARB Notice: This product is NOT legal for street use in California under CARB (California Air Resources Board) regulations. For off-road or race use only.

⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

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Additional Information

CARB:
This product is not CARB Legal and not for sale in California
Clearance Item:
N
MPN:
647005C-6
Proposition 65:
Y
Case Lot Quantity:
1
Category:
Engine Components>Piston Sets - Forged - 6cyl
Universal Fitment:
Y
Product Level:
Premium Performance
Track / Autocross:
9/10
Drag Racing:
9/10
Racing Competition:
9/10
Street Performance:
8/10
Engine Performance:
9/10
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