Mahle Performance Series Piston Ring Set - 4.145 in Bore - 1.0 x 1.0 x 2.0 mm Thick - Standard Tension - HV385 Thermal - 8-Cylinder Wire Tie Tool 2 forehead ports and 4

2 forehead ports and 4 rearward exhaust ports designed to move heated air out of the helmet)

10 pass cooler design

The cap is made from billet aluminum and features a small diameter with scalloped design making it a perfect complement to any engine bay

Open Pressure: 303 lbs

Designed to provide an 1800 to 2000 Stall for very heavy cars

Mahle Performance Series Piston Ring Set - 4.145 in Bore - 1.0 x 1.0 x 2.0 mm Thick - Standard Tension - HV385 Thermal - 8-Cylinder Wire Tie Tool 2 forehead ports and 4Product Description: Piston Rings Performance Series 4. 145 in Bore File Fit 1. 0 x 1. 0 x 2. 0 mm Thick Standard Tension Steel HV385 Thermal 8 Cylinder For over 80 years, MAHLE has numbered among the leading international manufacturers of high quality components for the automotive engine industry. From powering the Champions in the world's premier racing series to delivering winning performance at local dirt tracks around the country, MAHLE means