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4.155" Bore 5/64"-3/16" Cast Standard Fit Piston Rings.

FMP E243X30
Limited Supply: only 3 remaining
Pricing: $40.15


Speed Pro Rings-4.155" Bore 5/64"-3/16" Cast Standard Fit Piston Rings

Speed Pro Piston rings dominate the racing industry with technically advanced design; dedicated research; and superior quality. Speed Pro rings deliver superior performance under grueling race conditions every weekend; on oval tracks; and drag strips world wide.


Fits 377/400 

Ring Configuration 5/64”; 3/16”

Available in Std; 30; 40; 60 bore sizes


  • FMP E243X30
  • FMP E243X30
  • Speed Pro
  • Available
  • New


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