What is the maximum horsepower

They are here

http://www.theskiclinic.com/kawasaki-tech.html

Or do you mean engine torque as related to horsepower?
Maximum Torque 152 N·m (15.5 kgf·m, 112.1 ft·lb) @7 250 r/min (rpm)


https://www.google.com/search?q=2011+Kawasaki+Ultra+Jet+Ski.+Torque+specs

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Volkswagen Scirocco 3 1.4 TSI 122HP Engine Technical Data Aspiration : Turbo + Intercooler Compression Ratio : Maximum power - Output - Horsepower : 122 PS or 120 bhp or 90 kW @ 5000 rpm Maximum torque : 200 Nm or 147 lb.ft @ 1500-4000 rpm 28 more rows

Volkswagen Scirocco 3 1.4 TSI 122HP Specs

Let check is it helpful or not?

The redline torque of the Kubota engine is where the engine pulls weakest, producing only a total of 37 foot-pounds when the throttle is opened to the full 3,600 rpm maximum.

Peak torque of the Kubota arrives earlier at 2,400 rpm on the tachometer, producing a total of 41 foot-pounds, along with 19.5 horsepower at the time.

Ok, the next thing to do is select a good high torque camshaft. There are many companies that make cams sets for your bike. Harley has their Screaming Eagle high performance line. But, don't count out S&S, HeadQuarters, Competition Cams with their V-thunder line, and many others. Go for low end torque as much of it as you can get rather than top end horsepower.

Good Luck
steve

Specifications: Engine Type: 1449 cc, 4-Stroke, Air Cooled, V-Twin
Engine Bore and Stroke: 95.3 mm x 101.6 mm
Valves 2 valves/cylinder
Claimed Horsepower: 67 hp (50 kW) @ 5200 rpm
Maximum Torque: 110 Nm (81.1 ft. lbs) @ 3100 rpm
Transmission type: 5 speed
Final Drive: Belt

Tire - Front: 130/90-16
Tire - Rear: 130/90-16
Brakes - Front: dual 292 mm discs with 4-piston calipers
Brakes - Rear: single 292 mm disc with 4-piston calipers

Sizes can vary depending on what has been done to the bike.
Ride safe and loud pipes save lives.

Dimensions Exterior Length: 146.1 in. Width: 62.4 in. Height: 53.1 in. Wheel Base: 89.2 in. Curb Weight: 1870 lbs. Interior Front Head Room: 37.8 in. Front Shoulder Room: 51.6 in. Rear Head Room: 36.5 in. Rear Shoulder Room: 50.5 in. Front Leg Room: 42.5 in. Rear Leg Room: 29.8 in. Luggage Capacity: 10.4 cu. ft. Maximum Seating: 4 Performance Data Performance Base Number of Cylinders: 4 Base Engine Size: 1.3 liters Base Engine Type: Inline 4 Horsepower: 100 hp Max Horsepower: 6500 rpm Torque: 83 ft-lbs. Max Torque: 5000 rpm Drive Type: FWD Fuel Data Fuel Fuel Tank Capacity: 10.6 gal. EPA Mileage Estimates: (City/Highway/Combined) Manual: 24 mpg / 32 mpg / 27 mpg
Range in Miles: Manual: 254.4 mi. / 339.2 mi. / 286.2 mi.

Base Number of Cylinders: 6 Base Engine Size: 4.9 liters Horsepower: 145 hp Torque: 265 ft-lbs. Maximum Towing Capacity: 7500 lbs.

I can tell you what mine is. I have a K&N Air filter and Cobra Power pro 2 into 1 pipes on it. Also a Power Commander USB III. I had it dyno tuned (each cylinder) and the results are Maximum HP 75.01 and 78.24 ft-lbs torque. I'm not sure what it is stock. Probably in the 62 to 68 range. The dyno tuning made a HUGE difference in how smooth the power curve is.

Hi, the weight of the cars, the gear ratios, engine and drive train condition would all be factors--
the weight could make a big difference, to exaggerate an example of each, a car with more torque and a bigger engine (more horsepower for this example) that weighs twice as much as another car will not win a race because it needs a lot more power to move the extra weight. Obviously, a car with an engine and transmission in poor condition, but a higher horsepower and torque rating probably will not win a race with a car of less horsepower and torque in excellent running condition. Gear ratios, consider 2 people in a bicycle race, one incredibly strong, the other not a very good athlete. The strong biker has a bike with low gears, it will only go so fast in the highest gear when he's pedaling as fast as he can. The weaker biker has the bike with the an excellent range in gears, allowing him to pedal easily up hills, and with fewer revolutions on flat roads and down hills, so even though he has less power than the other rider, his power is used to the best efficiency .
Another point to make, would be that engine size alone means nothing, a huge engine can have less horsepower than a smaller one. countrycurt0