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2025 Harley-Davidson FLHX Street Glide

Engine: 1917

Engine

Engine

  • AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle Oil

    4.9  (1653 Reviews)
    • Resists viscosity breakdown 6X better than Harley-Davidson* SYN3* for improved protection against compensator and transmission gear wear.1
    • Resists extreme heat to help keep engines clean and efficient.
    • Reduces wear and deposits for maximum engine compression and power.
    • 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.

    $22.99

    Retail Price (CAD)

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Cooling system

  • AMSOIL Powersports Antifreeze & Coolant

    5.0  (12 Reviews)
    • Pre-mixed 50/50 with high-purity water
    • Ethylene-glycol formulation meets OEM requirements
    • Extended-life formulation lasts up to five years
    • Borate-, nitrite- and phosphate-free
    • Safe for copper, brass/bronze alloys and aluminum
    • Boil-over protection up to 226°F (108°C)
    • Freeze protection down to -34°F (-37°C)
    $13.79

    Retail Price (CAD)

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Transmission

Transmission

  • AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle Oil

    4.9  (1653 Reviews)
    • Resists viscosity breakdown 6X better than Harley-Davidson* SYN3* for improved protection against compensator and transmission gear wear.1
    • Resists extreme heat to help keep engines clean and efficient.
    • Reduces wear and deposits for maximum engine compression and power.
    • 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.

    $22.99

    Retail Price (CAD)

    Change location

  • AMSOIL 100% Synthetic V-Twin Transmission Fluid

    4.9  (493 Reviews)
    • Protects against gear and bearing wear
    • Delivers smooth shifts
    • Helps eliminate loud thunks and gear noise
    $28.29

    Retail Price (CAD)

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Differential/Transfer Case

Primary

  • AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle Oil

    4.9  (1653 Reviews)
    • Resists viscosity breakdown 6X better than Harley-Davidson* SYN3* for improved protection against compensator and transmission gear wear.1
    • Resists extreme heat to help keep engines clean and efficient.
    • Reduces wear and deposits for maximum engine compression and power.
    • 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.

    $22.99

    Retail Price (CAD)

    Change location

  • AMSOIL 100% Synthetic V-Twin Primary Fluid

    5.0  (535 Reviews)
    • Delivers consistent clutch feel for confident takeoffs
    • Helps prevent clutch slip
    • Provides smooth acceleration
    • Helps riders easily find neutral
    • Protects compensator bearing, chain and gears against wear
    $24.19

    Retail Price (CAD)

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Other Fluids

Front fork

  • AMSOIL Shock Therapy® #10 Medium Suspension Fluid

    5.0  (11 Reviews)
    • High viscosity index helps prevent fade under extreme temperatures
    • Consistent, smooth damping
      • Seal conditioners for extended service life
    • Race-grade technology
    $27.19

    Retail Price (CAD)

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Hydraulic brake system. front

No recommendations available

Hydraulic brake system

No recommendations available

Seasonal Storage

Products

  • AMSOIL Gasoline Stabilizer

    • Helps keep fuel fresh up to 12 months
    • Protects against varnish and gum buildup
    • Fights ethanol corrosion
    • Ideal for stored seasonal equipment such as snowmobiles, lawnmowers, motorcycles and boats
    $21.19

    Retail Price (CAD)

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ADDITIONAL PRODUCTS

  • AMSOIL Motorcycle Octane Boost

    • Increases octane up to three numbers
    • Maximizes power & performance
    • Helps eliminate engine knock & ping
    • Cleans harmful deposits
    $9.39

    Retail Price (CAD)

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  • AMSOIL Quickshot® Gasoline Treatment and Stabilizer

    • Cleans powersports fuel systems
    • Addresses ethanol-related performance issues
    • Stabilizes fuel during short-term storage
    $17.89

    Retail Price (CAD)

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  • AMSOIL MP Metal Protector

    • Cuts through rust and frees frozen components
    • Helps protect against rust and corrosion, even in salt water
    • Displaces water
    • Stops squeaks
    • Lubricates moving parts
    $11.49

    Retail Price (CAD)

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  • AMSOIL High-Foam Car Shampoo

    • High-foam formula is hard on dirt, gentle on coatings and finishes
    • Bucket-wash, foam-gun and foam-cannon capable
    • Breaks down contaminants and road grime
    • Anti-static
    $19.59

    Retail Price (CAD)

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  • AMSOIL Exterior Ceramic Spray

    • Easy application
    • Requires no cure time
    • Sheds water rapidly
    • Protects against UV rays
    $28.29

    Retail Price (CAD)

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Your 2025 Harley-Davidson FLHX Street Glide Motor Oil

AMSOIL synthetic lubricants are the solution for drivers who want the most from their 2025 Harley-Davidson FLHX Street Glide. Our synthetic motor oils are designed to meet or exceed the highest industry standards.

Protect your Harley-Davidson FLHX Street Glide in any driving conditions with our specially formulated motor oils. Whether it’s extreme temperatures, long commutes, towing, hauling, the added stress of a turbocharger or you’re simply extending the time between oil changes, we have motor oils designed to keep your 2025 Harley-Davidson FLHX Street Glide protected.

We produce the synthetic motor oil, oil filter, transmission fluid, gear lube and grease for a complete fluid change – everything to keep your Harley-Davidson FLHX Street Glide running smoothly for the long haul.

Industry-Tested, Driver Approved

AMSOIL products are subjected to rigorous third-party, industry-standard testing so you can rest assured you’re getting maximum protection. Also, check out our customer reviews on AMSOIL.com to make the best choice for your Harley-Davidson FLHX Street Glide. Hear from more than 6,000 customers who have experienced AMSOIL lubricants.

2025 Harley-Davidson FLHX Street Glide Transmission Fluid

Using a properly formulated transmission fluid for your Harley-Davidson FLHX Street Glide can help prevent costly problems down the road. AMSOIL transmission fluids offer the best protection for your Harley-Davidson FLHX Street Glide, even in severe driving conditions. Protect your vehicle’s transmission from wear, sludge and temperature-related problems and drive with confidence.

Shop Online and Get Fast, Free Delivery

Most orders are delivered within three business days or less. With free shipping on orders over $100, and savings of up to 25% on every order for Preferred Customers, shopping online is the fastest way to get AMSOIL products to your doorstep. Becoming a Preferred Customer earns you savings, $5 back on every $100 you spend and more. Simply shop AMSOIL.com and add a P.C. membership to your cart before checking out. You will receive immediate savings on products for your 2025 Harley-Davidson FLHX Street Glide.

Find an AMSOIL Dealer or Retailer Near You

Getting products for your 2025 Harley-Davidson FLHX Street Glide couldn’t be easier. Find a nearby Independent AMSOIL Dealer or retailer using the AMSOIL Locator.

AMSOIL Disclaimer and Technical Concerns

Specifications contained on this website are based on manufacturers' information and were believed accurate at the time of publication. Our recommendations apply to AMSOIL products only, as we cannot be responsible for products from other manufacturers. Always compare fluids and lubricants that were installed in the vehicle with those replacing them during service. Never install more fluid or lubricant than what is considered adequate according to gradients on dipstick or level of filler hole. Fill and drain locations are for reference only. Failure to perform adequate inspections or obtain proper resolution will limit or negate any liability toward AMSOIL INC. Models introduced midyear may not have the same specifications as those produced earlier.

If any discrepancies are noted, they can be simply reported to AMSOIL by clicking on the "Problem?" link docked to the left. We review all reported problems, if you would like a personal response to the issue you are reporting please enter your email address in the space provided on the form.