S58 BILLET PORT INJECTION MANIFOLD
MSRP $5999
Thermal Coating – $400
Fits:
G80 | M3 | 2020+
G82 | M4 | 2020+
G83 | M4 | 2020+
F97/8 | X3/4M | 2019+
 
The RK Autowerks G8x M3/M4 Manifold Features
Performance
0-2F Degree IAT delta below 30psi from 20-130mph at 85F
5F Degree  IAT delta at 35psi from 20-130mph at 85F
12F Degree  IAT delta at 45psi from 20-130mph at 85F
45% core volume increase
Factory manifold is 215 in3, RK manifold is 315 in3
No increase in pressure drop even though the core is 45% bigger
High performance Wagner Tuning tube and fin core for maximum heat transfer
Lightweight core with the same BMW fin configuration but split into 2 channels and taller fins
CFD testing to optimize port design
Velocity stack and tapering of runners to optimize flow
Thermal analysis to reduce material in necessary locations 
Features
Includes a Port matched phenolic spacer 
Acts as a thermal barrier that separates the manifold from the cylinder head
Lowers intake temps and reduces heat soak 
Top feed billet fuel rail with -8AN provisions on each side using EV14k body
Any fuel rail that bolts on factory manifold works with RK manifold
3x 1/8 NPT sensor pad to assist with external sensors
Allows installation of external sensors and fittings
6x 1/8 NPT ports in the runners for Nitrous or methanol
Port matched to prevent fuel from dripping down walls
2x 1/8 NPT ports pre cooler for using meth or nitrous to freeze manifold while staging
Allows you to purge manifold with meth to bring IAT down prior to a run
TIG welded and pressure tested in house
Self bleeding manifold like OEM, eliminating any concern for air pockets
Block off caps included for plugging OEM vacuum lines
True plug and play bolt on installation with all hardware included
Comes with the standard RK Autowerks LLC warranty 
Manifold Options
Oversized port matched runners for oversized cylinder
Allows you to send runners to us to match to your CNC head
If not, port matched the CNC head becomes choked by manifold
Optional Bosch 750cc or ID1050cc injectors with fuel line integration
Specialty fasteners burst panel, SFI Spec 23.1,
Prevents backfires from nitrous installation
Custom laser engraving, powder coating and thermal coating
Engineered, designed, manufactured, tested, and packaged in Texas, United States