Harley Davidson Sportster Nightster 975 2024 Service Manual

Harley's own product copy is explicit that this base model is designed to inspire riders of all skill levels, positioning it as the genuine entry point below the pricier Nightster Special. The real, checkable distinction: this bike runs the Revolution Max 975 (no "T" suffix), delivering a claimed 90 hp and 70 lb-ft of torque — 1 hp and 2 lb-ft less than the Special's slightly retuned 975T unit.

Power comes from that liquid-cooled Revolution Max 975, a 60-degree V-twin with a 3.82-inch bore and 2.6-inch stroke and a 12:1 compression ratio, fed by Electronic Sequential Port Fuel Injection (ESPFI) through a 2-into-1 exhaust with a catalyst in the header. The engine is a genuine stressed member of the chassis, significantly reducing overall weight and improving stiffness versus a traditional frame design — the same fundamental engineering approach carried across the whole Revolution Max family.

Exposed dual rear shocks, modeled directly after an earlier Sportster chassis, give this bike its signature style line and sharp handling — a 41mm Showa Dual Bending Valve conventional fork up front, paired with dual outboard, direct-acting emulsion-technology rear shocks offering coil springs and threaded preload collars. A 4-inch analog gauge display shows speedometer, turn indication, traction control status, coolant temperature alert, ABS alert, fog lamp indication, battery voltage alert, high beam indicator, low fuel indication, rear-ABS disable status, odometer, trip A/B, gear position, fuel range, a 12/24-hour clock, digital tachometer, and ride mode indication.

Confirmed dimensions list an 89.4-inch length, a 27.1-inch laden seat height, 4.5 inches of ground clearance, a 5.4-inch trail, and a 61.3-inch wheelbase. Fuel capacity comes in at 3.1 gallons with 4.75 quarts of oil, and shipped weight is 462 lbs, rising to 481 lbs in running order — genuinely a few pounds lighter than the Special. This base RH975 configuration continues the model line Harley introduced for 2022 as the production successor to the cancelled Bronx streetfighter project.

This factory service manual covers the procedures, torque specs, and diagrams needed to keep a 2024 Nightster RH975 running the way it was built to.