CNC-Motorsports offers a variety of Mopar B 383-400-431-451-499 rotating assembly kits. We offer everything from mild pump gas piston kits to wild fully forged rotating stroker kits to meet your racing needs. We offer quality name brands such as; Eagle, Scat, Callies, Lunati, Crower, JE/SRP, Diamond, Mahle, CP, Keith Black, and Manley to name a few. CNC-Motorsports can customize any stroker kit to meet your specific needs. All balanced rotating assembly kits are completed in house by CNC-Motorsports. If you don’t see the stroker kit you're wanting feel free to call or email our experienced staff today.