VERIFIED DIRECT-FIT2017 - 2026 MODEL RANGEMilwaukee-Eight 4-Valve Single-Cam V-TwinAGENT API/api/bundles/harley-davidson-road-king-m8-2023
2023 Harley-Davidson Road King / Road King Special (FLHR / FLHRXS) Direct-Fit Service Bundles
Curated workshop maintenance packages sized and calibrated directly from verified OEM service documentation. Choose a package below, customize individual consumables, and order your complete service kit with 1-click checkout.
FACTORY WORKSHOP MANUAL DATA
Verified OEM Service Specs
OIL CAPACITY
4.5 US qt (4.26 L) Engine Oil Sump
20W-50 V-Twin Full Synthetic
DRAIN TORQUE
14 - 21 ft-lb (19 - 28.5 Nm) - 11105 Viton O-Ring
Fresh Crush Washer
SPARK PLUG
Harley 6R12 / NGK DCPR7E (2 Plugs Required)
Gap: 0.038 - 0.043 in (0.96 - 1.09 mm)
BRAKE FLUID
DOT 4 ABS Synthetic Fluid
Tires: 36 PSI Front (130/70B18) / 40 PSI Rear (180/55B18)
| Parameter | Specification |
|---|---|
| Engine Oil | 20W-50 V-Twin Full Synthetic Scope: 4.5 US qt (4.26 L) Engine Oil Sump Torque: 14 - 21 ft-lb (19 - 28.5 Nm) - 11105 Viton O-Ring |
| Spark Plugs | Harley 6R12 / NGK DCPR7E (2 Plugs Required) Gap: 0.038 - 0.043 in (0.96 - 1.09 mm) |
| Brake Fluid | DOT 4 ABS Synthetic Fluid |
| Tire Pressure | 36 PSI Front (130/70B18) / 40 PSI Rear (180/55B18) |
Essential Touring Powertrain Kit3 Included Consumables
Road King Milwaukee-Eight Engine Oil Service Bundle
HardDrive V-Twin Synthetic Blend 20W-50 engine oil (1 gallon), K&N high-flow black oil filter, and magnetic drain plug.
Matches 4.0-4.5 Qt M8 SpecIn StockQty: 1
HARDDRIVE Engine Oil
High-shear protection for open highway long-distance touring.
MPN: 222980DPN1: 10-2980SKU: 10222980
$43.95
Harley M8 Direct-FitIn StockQty: 1
K&N Oil Filter - Black
Cross-drilled 17mm hex nut allows quick filter changes on road trips.
MPN: KN-171BDPN1: 56-0171BSKU: 10KN171B
$17.99
OEM 14-21 ft-lb Torque SpecIn StockQty: 1
SHOW CHROME Fuel Delivery Component
Traps microscopic metallic silt from crankcase and transmission.
MPN: 5301DPN1: 0712-0552SKU: 305301
$6.95
Selected Bundle Subtotal3 of 3 Items Selected
Direct warehouse drop-ship. Standard delivery calculated at checkout.
Bundle Total
$68.89
WORKSHOP REFERENCE & FAQ
Factory Maintenance Specifications & Service Q&A
Essential service data verified against OEM workshop manuals for 2023 Harley-Davidson Road King / Road King Special (FLHR / FLHRXS) owners and DIY technicians.