Harley Davidson Sportster Nightster Special 975 RH975S 2024 Service Manual

Harley first rolled out the Nightster Special as a 2023 model and carried it into 2024 with new colorways and a genuine, measurable performance bump — output climbed from 90 hp and 70 lb-ft the year before to a claimed 91 hp and 72 lb-ft, a small but real gain over the outgoing tune.

Power comes from the Revolution Max 975T, a liquid-cooled V-twin with variable valve timing, a 3.8-inch bore and 2.6-inch stroke, and a 12:1 compression ratio, delivering peak torque above 5,000 rpm but tuned to make more of that grunt available lower in the rev range for a genuinely more responsive everyday feel. Power runs through a gear-type primary drive, an eight-plate assist-and-slip wet clutch, a 6-speed transmission, and belt final drive, exhausting through a distinctive 2-into-1 system on the right side.

Standard equipment includes a 4-inch TFT display showing speedometer, gear, odometer, fuel level, clock, trip, ambient temperature, low-temperature alert, side-stand-down alert, tip-over alert, cruise control, range, and tachometer, with Bluetooth phone pairing built in. Rear suspension uses direct-acting, dual outboard emulsion-technology shocks with coil springs and threaded preload collars — genuinely simple, easy-to-adjust hardware rather than a linkage-type setup.

Confirmed dimensions list an 87.0-inch length, a genuinely low 27.8-inch unladen seat height, a 30-degree rake with 5.4 inches of trail, a 61.3-inch wheelbase, and 4.5 inches of ground clearance. A 3.1-gallon fuel tank delivers up to 52 mpg combined, with a compact 216kg (476 lb) dry weight and a claimed top speed around 124 mph. Four selectable ride modes let riders tailor throttle and traction response to conditions. 2024 US pricing started at $13,499 for Billiard Gray, with Black Denim, Red Rock, and Baja Orange colorways commanding a $450 premium.

This factory service manual covers the procedures, torque specs, and diagrams needed to keep a 2024 Nightster Special RH975S running the way it was built to.