Race-Mod

1)- Cylinder base machined to increase compression
2)- Exhaust timing raised
3)- Intake timing lowered
4)- Piston (2) relieved for thermal expansion
5)- Piston lightened, CNC internal material removed
6)- Intake manifold matched to cylinder
7)- Copper coated base gasket
8)- CA5003 "Injector pump" Big Bore carburetor

Horsepower- 5.6 @ 14,500+ usable RPM (based on 75mm prop load)


Turn-around time - It can take as long as one week from the time we receive your engine until we ship it back. We can calculate the approximate wait time by phone at: (863) 699-1231 M-F 9:30 - 5:30 pm Est.









(We recommend the Pro-Race for competition model boaters)

Note: There is no primer bulb or choke with a CA5003 Big Bore carburetor, this carburetor is designed for performance.

Upcharge- $149.95