K1 Tech Rotating Assembly 416 C.I.


By designing connecting rods, crankshafts and pistons around each other from inception, K1 can partner with Wiseco or JE to increase strength and eliminate unneeded mass in each application. The professional engine builder will note the assembly balances well and fitment is exceptional. Power and longevity are increased through a reduction in mass, friction and windage.

* The perfect combination for your high-performance LS engine!
* Includes K1 4340 forged crankshaft, H-beam connecting rods, forged Wiseco Pistons and high-performance rod/main bearings
* Connecting rods are specifically designed for stroker applications
* Crankshafts include OEM reluctor wheel installed
* Balancing not included


  • Compression Ratio At 65cc: 10.2:1
  • Compression Ratio At 70cc: 9.7:1
  • Bore: 4.070
  • Stroke: 4.00
  • Rod Length: 6.125
  • Crankshaft P/N: 012FAE400-58
  • Rod P/N: 012AE25613ST
  • Piston P/N: K445X7
  • Ringset P/N: 4072GFX
  • Reluctor: 58T