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Instruction Sheets for Part Number HSN-SM8556S
Hastings Steel Series Performance Ring Sets
Engine Piston Ring Set, Single Cyl Ring Set; Plasma Moly
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Estimated Ship Date: Mar 16, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
SM8556S
Part Type:
Product Line:
Summit Racing Part Number:
HSN-SM8556S
UPC:
00075538350569
Bore (in.):
4.000 in.
Bore (mm):
101.600mm
Piston and Ring Oversize (in.):
Standard
Piston and Ring Oversize (mm):
Standard
File Fit:
No
Gapless:
No
Gas Ported:
No
Top Ring Included:
Yes
Top Ring Thickness:
0.043 in.
Top Ring Material:
Steel
Top Ring Facing Material:
Plasma-moly
Second Ring Included:
Yes
Second Ring Thickness:
0.043 in.
Second Ring Material:
Ductile iron
Second Ring Facing Material:
Phosphate coated
Oil Ring Included:
Yes
Oil Ring Thickness:
3.0mm
Quantity:
Sold as 1 set.
Hastings Steel Series Performance Ring Sets
Hastings Steel Series Performance ring sets put the performance in your mind in your engine! With them, you can expect better oil control, longer engine life, and confidence—from the moment you start. Their alloy steel material allows for reductions in compression ring cross-sectional dimensions--both axial height and radial width. These rings decrease the engine's reciprocating mass, and can be fitted to the latest designs of lighter, reduced deck-height pistons with restricted ring belt areas. Hastings Steel Series rings are a must for high performance sport compact and late model race engines. Order the set that best matches your application.
Features, items, and specs:
* Top and 2nd rings offered in increasingly thinner axial heights
* Durable alloy steel top rings available with torsional or barrel-faced shapes
* Top compression rings available with either plasma moly impact-resistant alloy (SM) or chrome (SC) coatings
* Second groove rings feature either torsional reverse-twist taper cast iron or Napier-faced ductile iron construction with a phosphate coating
* Chrome-plated, Flex-Vent oil rings made from 1070 segmental steel rails with 201 stainless steel expander
Applications
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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