Supertech

Can be used with OE triple groove valvesCONTAINS: SPRFE20BE x 24RET-BMB48-TE x 12RET-BMB48-TI x 12 All Supertech valve springs are made with premiu...

BMW N54 N55 S55 Conical spring kit SPR-FE20-BE(24)  75lbs @ 36.5mm – Rate: 8lbs/mm – CB @ 13.3mm lift – Max lift: 12mm – Intake RET-BMN54/TI (12) –...

Center To Center: 148mm Big End Width: 23.90mm Piston End Bore: 22mm Big End Bore: 53.66 Piston End Width: 21mm With ARP2000 or ARP625L bolts

Bore: 82mm Over Size: Std Comp Ratio: 10.2:1 Dome Dish: Std Head CCs: 36cc Comp Height: 33.2mm Stroke: 94.6 Skirt Style: Slipper Design Rod Length...

Supertech stainless steel intake valves are manufactured from an enhanced version of EV8 (21-4N) steel. We have chosen this material specifically b...

Supertech stainless steel intake valves are manufactured from an enhanced version of EV8 (21-4N) steel. We have chosen this material specifically b...