Piston Ring Set 4.560 Bore .043 .043 30.0mm

The JE PISTONS Piston Ring Set 4.560 Bore .043 .043 30.0mm is a precision-engineered ring kit designed for high-performance eight-cylinder engine builds requiring exact bore fitment and controlled ring tension. This file-fit piston ring set delivers the low-tension characteristics and durable steel construction with nitride coating essential for race-series applications where ring stability and blow-by control directly impact power output and longevity.

Each ring in this piston ring set measures 0.043 inches in both the top and second ring widths, with a 3.0mm thickness specification that provides optimal radial strength and conformability against cylinder walls. The nitride surface treatment resists wear and scuffing during extended high-load operation, while the low-tension design reduces friction losses—a critical advantage in racing engines where horsepower conservation and thermal stability matter. File-fit rings require careful hand-fitting to ensure proper end-gap clearance for the specific bore diameter, allowing experienced builders to dial in exact compression and ring sealing characteristics.

This kit suits eight-cylinder engines in competitive motorsports, street performance builds, and engine rebuilds where bore size is precisely 4.560 inches and original equipment piston specifications call for premium-grade ring sets. JE PISTONS' race-series piston rings are selected by engine builders and machine shops who demand exacting tolerances, consistent material quality, and proven performance under sustained boost, high RPM, and elevated combustion pressures. Proper installation with correct ring positioning and end-gap adjustment according to JE specifications is essential to achieving rated sealing and durability.