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MAHLE 8550MS-12 Performance Piston Ring Set Bore - 85.50mm

Part of: MAHLE Performance Piston Ring Set Bore

Other options in this family: MAHLE 9550MS-12 MAHLE 8200MS-10 MAHLE 9200MS-12 MAHLE 8725MS-12 MAHLE 9300MS-12

Manufacturer

Picture for manufacturer MAHLE

Part Number

8550MS-12
8 reviews
Sale Price

$91.44

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The MAHLE 8550MS-12 is a high-performance piston ring set designed for sport compact engines requiring an 85.50mm bore diameter. This drop-in ring set features a 1.2mm, 1.2mm, 2.8mm configuration engineered to deliver reduced friction and improved sealing for enhanced engine performance.

Key Features:

  • 85.50mm bore diameter for precise fitment
  • Steel nitrided top ring for superior durability and wear resistance
  • Reverse twist cast iron second ring for optimal sealing
  • Standard tension oil control ring for reliable oil management
  • Drop-in design for straightforward installation
  • 1.2mm, 1.2mm, 2.8mm ring thickness configuration
  • Engineered using advanced computer simulation technology to minimize friction
  • Ultra-flat ring flanks maximize ring-to-piston sealing

MAHLE's sport compact ring sets are designed for engines demanding high-performance reliability. These rings feature precision manufacturing and advanced materials that deliver consistent performance under demanding conditions. Part of MAHLE's Performance Series, these rings are trusted by engine builders and motorsport enthusiasts worldwide for their quality and durability.

Products specifications

Bore (in)

3.366 in.

Bore (mm)

85.496mm

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

1.2mm

Prop 65

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

Piston Ring Thickness

1.2mm, 1.2mm, 2.8mm

Excellent price and fast shipping. Product showed up as described and timely.

Thanks Autoplicity you had the best prices I could find, fast shipping, and everything I ordered was exactly what I was looking for! Great Customer Service!

so far so good

Great price. Very happy with order. Will buy from them again.

Excellent transaction, received item very quickly and it was a lot cheaper than any other online retailer that I was able to find, could not even find cheaper on e bay.

absolutely lowest price on my Griffin radiator and super fast with the shipping to boot, what more could you ask for!

Quickly received item. Exactly what I ordered and was best price out there. Will do business with them again.

Great pricing and delivered in 3 days.

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