You are looking at a. Eagle Competition Balanced Rotating Assembly Stroker Kit Ford 351W-410 B14125040. BALANCED 4.000" Forged 4340 Steel Crank, 6.250" H-BEAM Rods, 7/16" ARP 8740 BOLTS, Forged 4032 MAHLE -6.6CC FLAT TOP 4.040" PISTONS, PLASMA-MOLY FILE-FIT RINGS, KING XP Rod/MAIN BEARINGS. For other complete rotating assembly combinations.Please message our friendly, knowledgable sales staff to get stroker kit specifications. We carry many stroker kit combinations and parts. We will work with you to get you exactly what you need. Also, please note that we are a full machine shop and have been in business over 39 years.. We can take care of any aspect of your project; from parts to machine work! We have multiple warehouses in locations across the US. This will insure your package gets to you quick! Clegg Automotive and Machine has been in business for over 40 years! Providing superior parts and machining service to ensure your project is a success is what makes us happy. Engine part sales and full machine shop services. New Custom Engine Rebuild Kits. All other engine parts and accessories.