Apr 11

Apr 11 - Apr 13

2025 Jesup Championships

PRO-MOD-SO-J CLSES

Lake Lindsay Grace

Jesup, GA

Apr 12

Apr 12 - Apr 13

The 2025 Blue Water Resort & Cas...

INB-MOD-SO-OPC-J CLSES

Colorado River

Parker, AZ

Apr 12

2024 9th Annual Kenmore Hydropla...

SE-VINTAGE-PRO-KPH-MOD-SO-J CLSES

Lake Washington

Kenmore, WA, WA

Apr 19

Apr 19 - Apr 20

2025 Moses Lake Spring Regatta

PRO-MOD-SO

Cascade Park Moses Lake

Moses Lake, WA

Apr 19 - Apr 20

Salmon River Jet Boat Race

SE-JRR

Salmon River

Riggins, ID

Apr 26

Apr 26

Freeport Riverfest 2024

OPC

Old Brazos River

Freeport, TX

Apr 26 - Apr 27

Region 6 Test & Tune

VINTAGE-INB-PRO-KPH-MOD-SO-OPC-J CLSES

Caesar Creek Lake

Waynesville, OH

May 2

May 2 - May 4

Lake Havasu

OS;D

Lake Havasu

Lake Havasu City, AZ, AZ

May 3

May 3 - May 4

Norm Evans Apple Cup

VINTAGE-INB

Lake Chelan

Chelan, WA

May 3 - May 4

Port Neches Riverfest

OPC

Neches River

Port Neches, TX

May 3 - May 4

Harford County Spring Nationals

INB

Bush River

Edgewood, MD

May 3 - May 4

Spring Lock Haven Regatta

PRO-MOD-SO

Susquehanna River

Lock Haven, PA

May 3 - May 4

D.B. Cooper Regatta

PRO-KPH-MOD-SO-J CLSES

Silver Lake

Castle Rock, WA

May 10

May 10 - May 11

George Grant Memorial Race

OB RR

Trinity River

Hoopa, CA

May 10 - May 11

US Title Series Spring Shootout

PRO

Champions Park Lake

Springfield, OH

May 10 - May 11

Spring Race at Salt Spring

PRO-KPH-MOD-SO-J CLSES

Salt Spring Reservoir

Copperopolis, CA

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Modified Outboard Menu

Modified Outboard

Modified-Outboard

MOD racers aren't afraid to get their hands dirty - The goal in this category is to pull every last bit of horsepower out of your engine. In Modified Outboard, the engine builder's skill is just as important as the driver's. These boats are easily recognizable by their specially tuned pipes that make them as loud as they are fast. Because engines are constantly being modified to make the absolute most of what the rules allow, the competition is always fierce. Join the ranks of some of the best engine builders in the world, join Modified Outboard Racing.

Whether hydroplane or runabout, Modified classes are defined by the size of their engines (displacement). The numbers in the class names give you the approximate engine size in cubic centimeters. The 250ccMH, or 250 cubic centimeter Mod Hydro, is smaller than the 850ccMH, or 850 cubic centimeter Mod Hydro. Some classes have minimum weights, which increase with engine size. The smaller classes are often a good fit for younger, lighter drivers (14-year-olds may drive 200-250cc Mod classes, for example). The larger classes take considerable skill and experience. Propellers of four blades or less are used, and your prop choice can affect your speed enormously.

Modified Outboard Resources

Modified Outboard Classes