Icon BBC FHR Domed Piston Set 4.290 Bore +18.3cc RG20002 tapered seat to 3/8" NPT

tapered seat to 3/8" NPT male

Dual -6AN inlet and -6AN outlet

50 in Length

4L) Engines for use with Holley Smart Coils

Icon BBC FHR Domed Piston Set 4.290 Bore +18.3cc RG20002 tapered seat to 3/8" NPTProduct Description: Piston FHR Forged 4. 290 in Bore 5 64 in x 5 64 in x 3 16 in Ring Grooves Plus 18. 30 cc Big Block Chevy Set of 8 Icon Pistons brings the same quality and performance you've come to expect from United Engine brands. ICON forgings are created at our in house facility, utilizing the latest innovations in piston forging technology. Each ICON piston is purpose built from the ground up for extreme high performance street or racing