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What type of oil does a 2021 Harley-Davidson Flhr Road King need and what is the capacity?

Published on March 09, 2024 by Searchforparts.com staff.

The 2021 Harley-Davidson FLHR Road King impresses with its classic yet powerful design, equipped with a 1746cc (107 ci) engine that delivers smooth and commanding performance on the road. It offers a comfortable ride with a well-designed suspension system, making long journeys enjoyable. Additionally, this model boasts advanced technology features such as touchscreen infotainment and intuitive controls, enhancing the overall riding experience for motorcycle enthusiasts. The oil type the 2021 Harley-Davidson Flhr Road King engine requires is 20W-50 Motorcycle Oil.

How much oil does a 2021 Harley-Davidson Flhr Road King take?

You will need 4.76-5.18 quarts with filter.

What kind of filter does a 2021 Harley-Davidson Flhr Road King take?

Below, you will find the proper filter for your 2021 Harley-Davidson Flhr Road King.

What else can I do to maintain my 2021 Harley-Davidson Flhr Road King?

To maintain your 2021 Harley-Davidson FLHR Road King, regular servicing and oil changes are crucial to keep the engine running smoothly. Checking tire pressure and tread wear regularly ensures optimal performance and safety. Cleaning the bike regularly, especially after rides in challenging conditions, helps preserve its appearance and prevent corrosion. Conducting periodic inspections of brakes, lights, and other essential components ensures that your Road King remains in top condition for years to come.

Upgrade your oil to the best synthetic on the market! Below you will find the correct oil type for your 2021 Harley-Davidson/Flhr Road King!

20W-50 V-Twin Motorcycle Oil
  • Convenience of one lubricant for all three sumps. *All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. 1Based on testing of AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil and Harley-Davidson Screamin’ Eagle SYN3 purchased on 1/26/24 in the CEC L45-KRL, ASTM D445 test.
Shop 20W-50 Motorcycle Oil Now!
SAE 60 V-Twin Motorcycle Oil
  • Resists extreme heat to help keep engines clean and efficient
Shop 20W-50 Motorcycle Oil Now!

These filters below are the correct fitting oil filters for your 2021 Harley-Davidson/Flhr Road King.

Black Oil Filter

This is the oil filter for the 2021 Harley-Davidson/Flhr Road King. Top filter for a clean engine!

  • 99% efficiency at 20 microns for maximum protection against engine wear
Get this filter
Chrome Oil Filter

This is the oil filter for the 2021 Harley-Davidson/Flhr Road King. Top filter for a clean engine!

  • 99% efficiency at 20 microns for maximum protection against engine wear
Get this filter