KB Hypereutectic SB Chevy Dished Piston Set - 4.155" Bore - 3.750" Stroke - 5.700" Rod Length 919130 1/2" NPT rear port for

1/2" NPT rear port for temperature sender and two 3/8" NPT ports for cooling lines

Has a 22" long and 4-1/4" dia

Control Arm Cross Shaft

Available in a Cam and Lifter Kit under CL94-300-5The COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development

1999-2009 GMC Sierra 1500

KB Hypereutectic SB Chevy Dished Piston Set - 4.155" Bore - 3.750" Stroke - 5.700" Rod Length 919130 1/2" NPT rear port forModern piston design locates the top ring higher for improved performance. a high top ring operates at higher temperatures and requires a larger top ring end gap. To find the proper ring end gap, multiply your bore size by the ring end gap factor listed on the chart (i. e. , Street Normally Aspirated 4. 000" bore x . 0065" gap factor = . 026" total top ring end gap). Your hypereutectic performance piston will expand less than typical cast or forged