Upgrade your engine's performance with the KB PERFORMANCE PISTONS Piston Ring Set. Designed for 4.030 bore size, these file-fit rings ensure a perfect seal and optimal compression, boosting power and efficiency. Crafted from durable ductile iron with...

Piston Rings - Premium Race Series - 4.040 in Bore - File Fit - 0.043 in x 0.043 in x 3.0 mm Thick - Low Tension - Steel - Plasma Moly - 8-Cylinder - Kit

Piston Rings - Performance Series - 4.060 in Bore - File Fit - 1.0 x 1.0 x 2.0 mm Thick - Standard Tension - Steel - HV385 Thermal - 8 Cylinder - Kit

Elevate your engine's power with the top-of-the-line Piston Ring Set boasting a precision file fit design and durable construction by MANLEY. Experience enhanced compression and oil control, perfect for professional racers and car enthusiasts looking...

Piston Rings - Maxseal - Gapless Top Ring - 4.125 in Bore - File Fit - 0.043 in x 0.043 in x 3.0 mm Thick - Low Tension - Steel - Chromium Nitride - 8-Cylinder - Kit

Piston Rings - Premium Race Series - 4.130 in Bore - File Fit - 0.043 in x 0.043 in x 3.0 mm Thick - Low Tension - Steel - Plasma Moly - 8-Cylinder - Kit