This is the CastFlow Xtreme series manifolds and 2" up pipes.
These are for trucks WITHOUT conventional downpipes as the passengers side up pipe almost excactly matches the drivers side.
Expect even greater hp, quicker spool up, and lower egts with these.
The standard sets comes WITHOUT an EGR provision.
They are available with ceramic coated that will hold up to 1600 degrees. The coating improves performance a little and drops underhood temps.
LMM trucks require a coolant line relocation fitting
Shipping quote is to Continental USA Only. Add extra option for Canada above.