New from Wagler – the Duramax Entry Level Rotating Assembly. This rotating assembly is an affordable option for Duramax engine builders that supports up to 800HP. See more details below.

Official Release:

WAGLER COMPETITION PRODUCTS, the experts in Duramax performance, have put together an entry level forged rotating assembly for the Duramax engine that will support up to 800 horsepower at the crank.

The WCP Duramax Entry Level Rotating Assembly is the ideal package for either a stock workhorse or a hot street truck. OE GM crankshafts have been known to break even in bone stock trucks, so WCP’s Duramax Entry Level Rotating Assembly can benefit those who are looking for increased durability, more power, or both. Even if the power goals are less than 800 HP, WCP’s assembly offers piece of mind for those who abuse their engines.

The WCP Duramax Entry Level Rotating Assembly gives the added strength of forged internals while still leaving more of the budget for a big turbo, lots of fuel, and other fun upgrades.


  • Callies forged Compstar 6.6 Duramax crankshaft (not balanced)
  • WCP As-Forged Duramax Street Rod (set of 8)
  • Mahle Clevite pistons (set of 8)
  • Duramax ring set (.020 over bore)
  • WCP piston valve relief and bowl de-lipped
  • Duramax main bearing set
  • Duramax rod bearing set
  • Duramax thrust bearing kit