Bikes

2018 Harley-Davidson Street Rod Dyno

Horsepower and torque from the High-Output Revolution X engine

April 19, 2018

The 2018 Harley-Davidson Street Rod has a starting suggested retail price of $8,699 and is available in five colors, Vivid Black, Olive Gold, Red Iron Denim, Electric Blue or Bonneville Salt Denim. Powering this American machine is a liquid-cooled, 750cc V-Twin engine.

We ran the Street Rod on our rear-wheel dyno in fourth gear to determine peak output from the High Output Revolution X. We documented 64.02 hp at 8,490 rpm and 46.36 pound-feet of torque at 3,720 rpm.

2018 Harley-Davidson Street Rod Dyno ChartJon McDevitt

Compared to the Standard Street 750, the Street Rod equipped with the High Output 750cc engine, produced seven more hp and 3 additional pound-feet of torque.

“The Revolution X engine’s added lungs are felt (and appreciated) as a road opens up. The midrange punch doesn’t feel quite as strong as the Yamaha (the extra weight probably doesn’t help), but the noticeable step in performance and the engine’s higher, 9,000-rpm rev limiter help minimize the gap.”— Bradley Adams

Engine Specifications


Engine Type:	Liquid Cooled, High Output Revolution X V-Twin
Bore x Stroke:	3.4 in. x 2.6 in.
Displacement:	749cc
Compression Ratio:	12.0:1
Fuel Delivery:	Mikuni Twin Port Fuel Injection, 42 mm bore