Whats Included: Complete Set Of Pistons, Rings, Locks & Pins
Application: Recommended for Applications Using Nitrous (Up To 250HP Shot) / Boost (Up To 5LBS)
3 Ring Pistons
Ross 80564
3-5/16" Bore x 4" Stroke
Includes Grant Piston Rings
Aircraft quality pins weighing 120 grams which are retained by spirolox.
Minimum piston to wall cleanance .0045"m .004" if you use deck stress.
The best pistons for your Flathead at the best price are Ross. A faithful reproduction of Are Sparks' original design. Machined on special Ross flathead forgings for maximum strength and minimum weight.
Stocking sizes are from 3-5/16" x 3-3/4" to 3-3/8" x 4-1/8"
