SST 120 TECHNICAL STANDARDS
Max. Total Cu. In. Displacement Min. Boat Length Min. Boat Weight
122.0 (2.0L) 16’ 1,100 Lbs.
SST 200 154.0 (2.5L) 16’ 1,150 Lbs.
SST 120 Boat Standards (see also Rule 21)
1) Any design of boat including bottom, deck, cockpit openings and seating arrangements is permissible so far as boat meets minimum length.
2) Power trim and/or adjustable spoilers shall be allowed in Super Stock.
SST 120 Motor Standards (see also Rule 23, 25, 26)
1) All cowling and engine graphics and colors shall be the same as OEM for product identity and may either be OEM or aftermarket.
2) SST 120 class can change engine wiring to allow 24-volt starting system.
3) The SST 120 class gear cases may have their outside surfaces refinished; however, they must meet the requirements of OPC Engine 
Specification sheets and the original design.  The outside surfaces of the gearcases may be either painted or unpainted. If painted, the color 
of the paint must be the same as the original factory motor color. If the gearcases are unpainted, any surface finish is acceptable.
4) In SST 120 it is permissible to remove, or render inoperable, the engine primer system and plug all primer related holes in the fuel system 
opened by removing the primer.
5) SST 120 engines may have a substitution of a maximum of 3 sleeves of any manufacturer with original porting specifications and the same 
material will be allowed for repair of damaged cylinders.
6) SST 120 reeds may be of any material or design.
7) SST 120 cylinder block exhaust port outlet openings may be remachined to the maximum dimensions shown in the OPC Specification 
Sheet. Only machined openings are acceptable, machined in the same manner as originally done with no grinding or blending of any sharp 
edges.
8)  SST 120 cylinder head combustion chamber pockets may have surface refinished. The cylinder head measurements must be within specified 
dimensions. No welding or repairs in the combustion chamber surfaces will be permitted.
9)  The Mercury-produced bolt-on plate muffler is an optional part for the SST 120 class. Note that this part fits only the studs-down SST 120 
engine.
SST 200 TECHNICAL STANDARDS
Max. Total Cu. In. Displacement Min. Boat Length Min. Boat Weight
154.0 (2.5L) 16’ 1,150 Lbs.
122.0 (2.0L) 16' 1,100 Lbs.
SST 200 Boat Standards (see also Rule 21)
1) Any design of boat including bottom, deck, cockpit openings and seating arrangements is permissible so far as boat meets minimum length.
2) Power trim and/or adjustable spoilers shall be allowed in Super Stock.
SST 200 Motor Standards (see also Rule 23, 25 and 26)
1) All cowling and engine graphics and colors shall be the same as OEM.
2) The SST 200 class can change engine wiring to a 24-volt starting system.
3) The SST 200 class gear cases may have their outside surfaces refinished; however, they must meet the requirements of OPC Engine 
Specification sheets and the original design.
4) The SST 120 engine, unaltered, is a legal engine in SST 200 class, and must meet the SST 120 class weight.