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MAHLE 8650MS-12 Performance Piston Ring Set Bore Drop-In - 86.50mm 1.2mm 1.2mm 2.8mm

Part of: MAHLE Performance Piston Ring Set Bore Drop-In

Other options in this family: MAHLE 4125MS-15D MAHLE 4000MS-15D MAHLE 4155MS-15D MAHLE 9400MS-12

Manufacturer

Picture for manufacturer MAHLE

Part Number

8650MS-12
4 reviews
Sale Price

$91.47

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The MAHLE 8650MS-12 is a high-performance piston ring set designed for sport compact engines with an 86.50mm (3.406 inch) bore diameter. This drop-in ring set features a metric configuration with ring thicknesses of 1.2mm, 1.2mm, and 2.8mm, engineered to deliver reduced friction and increased horsepower in performance applications.

Key Features:

  • 86.50mm (3.406 inch) bore diameter for precise fitment
  • Steel nitrided top ring for superior wear resistance
  • Reverse twist cast iron second ring for optimal sealing
  • Standard tension oil control ring (2.8mm)
  • Drop-in design with no filing required
  • Gas nitrided stainless steel construction for durability
  • Sold as a set of 4 cylinders

MAHLE Performance piston rings are developed using advanced ring simulation and computer modeling to minimize friction while maximizing cylinder sealing. The steel top rings feature MAHLE's patented HV385 supersonic thermal-spray coating process, providing superior bonding, increased durability, and enhanced scuff resistance. This ring set is ideal for sport compact performance builds, street performance applications, and engine rebuilds requiring precise bore specifications.

Products specifications

Bore (in)

3.406 in.

Bore (mm)

86.500mm

File Fit

No

Gapless

No

Oil Ring Included

Yes

Oil Ring Material

Stainless steel

Oil Ring Tension

Standard

Oil Ring Thickness

2.8mm

Quantity

Sold as a set.

Second Ring Facing Material

Cast iron

Second Ring Included

Yes

Second Ring Material

Cast iron

Second Ring Thickness

1.2mm

Top Ring Facing Material

Gas nitrided

Top Ring Included

Yes

Top Ring Material

Steel

Top Ring Thickness

1.0mm

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Piston Ring Thickness

1.2mm, 1.2mm, 2.8mm

great price, fast shipping, my third time ordering from autoplicity

Everything went smoothly, love the prices and the ease of transaction, hope to buy from you real soon, Nice people.

Very fast and easy ordering system. My order was shipped the next day.

Best price anywhere for a brand name item. Fast inexpensive shipping!

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