Harley Davidson FLHR Road King 2020 Service Manual

A hands-on review of this exact model year sums up the Road King's appeal directly: it does everything in an understated manner, with nothing showy, just honest touring motorcycling. Despite that simplicity, the bike is genuinely flexible, effectively a two-in-one machine since the windscreen and panniers come off in under a minute for a stripped-down cruiser look.

Power comes from the Milwaukee-Eight 107, an air-cooled V-twin displacing 1,746cc, a 100.1mm bore and 111mm stroke, and a 10.0:1 compression ratio, fed by fuel injection through a chain primary and belt final drive, delivering a claimed 111 lb-ft (150.5 Nm) of torque at 3,250 rpm through a 6-speed manual transmission. Since 2017 all Touring models have run this Milwaukee-Eight architecture, moving from the Twin Cam's twin camshafts to a single, quieter chain-driven camshaft with four lighter valves per head — eight valves total, hence the name. That finer-tolerance, mechanically quieter engine let Harley's engineers turn up the volume and bass in the exhaust note without adding mechanical racket underneath it.

For 2020 the pillion seat grew fatter and wider, borrowed from the Heritage Softail, for genuinely better two-up comfort, while the rider's own seat got slightly narrower to keep the same leg reach as before. Idle speed sits at a smooth 850 rpm, down from the old Twin Cam's 1,000 rpm.

Confirmed running gear lists a 49mm fork, 130/70B-18 front and 180/55B-18 rear tires, a 428-size, 86-link primary chain, and a 140-tooth, 24mm drive belt. 2020 US pricing started at $19,499, offered in Vivid Black, Billiard Red, Stone Washed White Pearl, Silver Pine/Spruce, and Stiletto Red.

This factory service manual covers the procedures, torque specs, and diagrams needed to keep a 2020 Road King FLHR running the way it was built to.