Product Summary

  • Three over-bore sizes to choose from
  • Plasma moly coated cast iron top and second ring material
  • 5/64" top and second ring thickness
  • 3/16" oil ring thickness
  • Sold as a set
See more details

Key Specs

MFG. Part #
BrandSpeedway Motors
Piston Ring StyleA
Piston Ring Diameter
See more specs

Need To Know

Quick and Easy Returns

Return Policy

Details

Speedway Plasma Moly Piston Rings, 4.00 Bore, Style A

  • Speedway premium Plasma Moly piston rings work with either gas or alcohol fuels
  • Handles 8000+ rpm
  • Up to 14:1 compression
  • Three over-bore sizes to choose from
  • Plasma moly coated cast iron top and second ring material
  • 5/64" top and second ring thickness
  • 3/16" oil ring thickness
  • Sold as a set

Charts

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Specifications

KEY SPECS
MFG. Part #
BrandSpeedway Motors
Piston Ring StyleA
Piston Ring Diameter
GENERAL
Piston Ring DesignConventional
Top Ring MaterialPlasma Moly Coated Cast Iron
Top Ring Thickness5/64"
Second Ring MaterialPlasma Moly Coated Cast Iron
Second Ring Thickness5/64"
Oil Ring Thickness3/16"
Oil Ring TensionStandard Tension
Sold in QuantitySet

Ratings & Reviews

4.7

3 Reviews

Overall Assessment

Customers appreciate the product for its good looks and easy installation process. They have confirmed that the product functions as intended, pointing out clear performance benefits. However, some buyers suggested that additional installation guidance could further enhance usability, indicating room for improvement. Despite this, the overall customer sentiment reflects positively on the product in comparison to competitor offerings, demonstrating its superior quality and practicality.

4.7

3 reviews

5

2

4

1

3

0

2

0

1

0

Filter by Ratings

Look good,reading how to install

5.0

3 years ago

D.M. outlaw garage

Southeast ks

A bit more info on how to install would have been beneficial,first time performance engine building is a a lot different than a oem rebuild

Would Recommend

Nice

5.0

5 years ago

Andrew

Elnora in

Verified

They work

Would Recommend

great

4.0

15 years ago

backroad

colorado

Verified

Easy to install.

Would Recommend

Showing 3 of 3 reviews

Questions & Answers

1 Question • 1 Answer

Are these rings file-to-fit or are they a fixed gap?

by ChevyChase84

• 15 years ago

1 answer

1 of 1 questions shown

Customer Impersonation Script