Harley-Davidson Road Glide Special 114 (FLTRXS) — OEM Fluid, Tire Pressure & Maintenance Specs
1,868cc Air/Oil-Cooled 45° V-Twin 8-Valve Milwaukee-Eight 114 · Source: Harley-Davidson Road Glide Special 114 (FLTRXS) (2019–2023) Official Owner’s Manual Maintenance Specifications
According to the Harley-Davidson Road Glide Special 114 (FLTRXS) (2019–2023) Official Owner’s Manual Maintenance Specifications, the 2019–2023 Harley-Davidson Road Glide Special 114 (FLTRXS) (chassis FLTRXS) requires 4.3 L (4.54 US qt) of SAE 20W-50 (JASO MA2, Screamin’ Eagle SYN3 20W-50 / H-D 360 20W-50) engine oil for a drain-only change and 4.7 L (4.97 US qt) with filter service (HD 62700296 / 62700297 (HF171C)). Standard solo cold tire pressure is 248 kPa / 2.48 bar / 36 PSI front (130/60B19 61H) and 276 kPa / 2.76 bar / 40 PSI rear (180/55B18 80H), paired with 4× HD 6R10 (31600012 Dual-Plug M8) spark plug(s) and a YIX30L-BS / HD 66010-97E battery.
Drain only: 4.3 L (4.54 US qt)
R 276 kPa (2.76 bar)
Est. Range: ~375 km (233 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 20W-50 · JASO MA2 · Screamin’ Eagle SYN3 20W-50 / H-D 360 20W-50 |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 4.3 L (4.54 US qt) • With filter/strainer: 4.7 L (4.97 US qt) • Complete dry overhaul: 5.2 L (5.49 US qt) |
| OEM Oil Filter Code & Type | HD 62700296 / 62700297 (HF171C) |
| Correct Oil Level Check Method | At full operating temperature resting ON THE SIDESTAND (Jiffy Stand); thread dipstick in to read |
| Oil Drain Bolt Torque | 24 N·m (17.7 lb-ft / 2.45 kgf·m) — Use fresh crush washer |
| Primary Chaincase Fluid | 1065 ml (1.06 L) — H-D Formula+ Primary & Clutch Fluid (900–1,065 ml wet refill) |
| Separate Transmission / Gearbox Oil | 828 ml (0.83 L) — H-D Formula+ or Heavy Synthetic Gear Oil 80W-140 (828 ml / 28 oz) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 130/60B19 61H · Rear: 180/55B18 80H (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 248 kPa / 2.48 bar / 36 PSI Rear: 276 kPa / 2.76 bar / 40 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 248 kPa / 2.48 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| OEM Spark Plug & Quantity | HD 6R10 (31600012 Dual-Plug M8) × 4 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YIX30L-BS / HD 66010-97E (12V 28.0Ah Heavy-Duty AGM) |
| Final Drive Maintenance | Carbon/Aramid Reinforced Secondary Belt — Inspect belt deflection and pulley debris |
| Brake Fluid & Coolant | DOT 4 · Air/Oil-Cooled Engine (No liquid coolant) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 1868 cc · 93 hp @ 5,020 rpm · 158 N·m (116.5 lb-ft) @ 3,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 695 mm (27.4 in) · 387 kg (853 lbs) |
| Fuel Tank & Est. Real-World Range | 22.7 L (6.0 US gal) · ~16.5 km/L → ~375 km (233 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,600 km • Engine Oil / Filter: 8,000 km / 8,000 km • Air Filter / Spark Plug: 24,000 km / 48,000 km • Valve Clearance Check: 48,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
For 2019, the FLTRXS stepped up from the 107 to the M8 114 (1,868cc) with Boom! Box GTS, and 2021-up builds switched from hydraulic actuation to a cable clutch with updated primary venting.
Oil & Clutch Mechanical Engineering Note
The FLTRXS 114 uses oil-cooled cylinder heads rather than liquid coolant, relying on shear-stable SAE 20W-50 engine oil (4.7 L) alongside isolated primary and transmission baths.
Garage Wrenching Gotchas
- Early 2019–2020 M8 Touring bikes can migrate transmission oil into the primary case via the clutch pushrod bore unless fitted with the updated inner-primary vent hose kit.
- Removing the front spin-on oil filter spills oil directly onto the crank position sensor harness unless you slip a drip funnel beneath the filter mount first.
5. Frequently Asked Questions (FAQ)
How are engine and separate drivetrain fluid capacities split on the Harley-Davidson Road Glide Special 114 (FLTRXS)?
The engine sump takes 4.3 L drain-only and 4.7 L (4.97 US qt) with filter (HD 62700296 / 62700297 (HF171C)) of SAE 20W-50 (JASO MA2), while isolated drivetrain cavities (primary chaincase 1065 ml, separate gearbox 828 ml) require dedicated gear/chaincase fluid.
How do you accurately check the oil level on the Road Glide Special 114 (FLTRXS), and what are its service intervals?
Bring the engine to full operating temperature and check the Full Hot mark with the motorcycle resting on its sidestand (Jiffy Stand) on level pavement—measuring upright leads to crankcase overfill and breather blow-by. Torque the drain plug to 24 N·m with a new crush washer. Factory oil change intervals are every 8,000 km, with valve clearance inspection every 48,000 km.
What are the cold tire pressures, puncture repair type, seat height, and range of the Road Glide Special 114 (FLTRXS)?
Fitted with 130/60B19 61H front and 180/55B18 80H rear tubeless rims (compatible with roadside plug kits), set cold tire pressures to 36 / 40 PSI (248/276 kPa) solo or 36 / 42 PSI loaded. Seat height is 695 mm (27.4 in) at 387 kg wet weight, delivering ~375 km per 22.7 L tank.