Street 750 Dark Custom

2018 Harley-Davidson Street 750 Dark Custom Technical Analysis & Specification Breakdown

Engineered by Harley-Davidson for the custom - cruiser motorcycle segment, the 2018 Harley-Davidson Street 750 Dark Custom utilizes a 749 cc (45.7 cu in) liquid-cooled v2, four-stroke layout. In factory specification, peak output is rated at 58 HP (42.3 kW) at 8,000 rpm while maximum torque reaches 60.3 Nm (44.5 lb-ft) at 4,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. With a specific output of 77.4 HP per liter and a 4,000 rpm working window between peak torque (4,000 rpm) and peak power (8,000 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the Street 750 Dark Custom measures 229 kg (505 lbs) wet (curb), translating to a power-to-weight ratio of 0.25 HP/kg (3.95 kg per horsepower). Rider ergonomics and chassis geometry center around a 653 mm (25.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,534 mm (60.4 in) wheelbase engineered for planted straight-line stability. The 13.1-liter (3.5 US gal) fuel tank paired with a rated consumption of 4.7 L/100 km provides an estimated theoretical range of roughly 279 km (173 miles) between fill-ups.

Within MotoLibrary's Harley-Davidson archive, this model family spans 2 indexed model years from 2016 to 2018, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.