About this item

• Product Overview

  Custom-engineered for quiet operation to eliminate transmission whine. Enables smooth shifts for crisp acceleration through each gear. Delivers outstanding protection for long transmission life. Use in any V-twin transmission that does not share a sump with the engine, including those found on Harley-Davidson,* Triumph* and pre-2013 Indian* motorcycles.

  See the product data sheet for full details.

  PROMOTES QUIET OPERATION

  • Precise frictional properties deliver smooth shifts and help quiet transmission noise, letting you focus on enjoying the ride.
  • Forms a durable oil film on bearings and gears, helping to dampen loud thunks when shifting and reduce gear noise.

  DELIVERS SMOOTH SHIFTS

  • Helps you avoid missed shifts for crisp acceleration through each gear.
  • Provides confidence that your transmission is going to respond as intended for an improved ride.

  FIGHTS GEAR & BEARING WEAR

  • Resists viscosity loss due to shear and withstands extreme heat for excellent wear protection.
  • Robust molecules provide film strength to protect against damage from shock loading.
  • Extreme-pressure additives deliver additional protection against wear.

  See the product data sheet for full details.

  *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.

• Technical Specifications
  Data Bulletin

  Data Bulletins

  Warranty

  WARRANTY

  SDS

  SDS

  
  
  
• Product Reviews
  4.9 star rating

  Based on 496 reviews

  Based on 496 reviews

  See all customer reviews

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  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Perfect
    By  DON,  a  Verified Buyer  on  August 09, 2026

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    Great product. Quiet and smooth shifts
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    great oil
    By  TERRY,  a  Verified Buyer  from  Prtescott, Az.  on  July 30, 2026

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    This oil for motorcycles has a very high rating and it has been great for me
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    2006 Harley Road King
    By  JAMES,  a  Verified Buyer  from  Sarnia Ontario Canada   on  July 26, 2026

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    I'll never use any other , AMSOIL ONLY, AMSOIL PRIMARY FLUID AMSOIL TRANSMISSION FLUID AMSOIL ENGINE "OIL" DIFFERENT OILS FOR DIFFERENT APPLICATIONS,
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 4 star rating
    Information
    By  ALBERT,  a  Verified Buyer  from  Home  on  July 06, 2026

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    Your transmission fluid needs to have the weights added example 75/90 or what ever it is actually. To most Harley Davidson motorcycle riders it's important for comparison for assurance that it will be of the HD level in weights. It would be a selling point it is for me at least same for Primary fluid .
    Was this review helpful?

    YES (8) NO (0)
  • 5 star rating
    Transmission
    By  HOWARD,  a  Verified Buyer  from  Tennessee   on  July 04, 2026

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    Awesome product gives you smooth shifts, Highly recommend
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    Great product
    By  KEN,  a  Verified Buyer  on  June 27, 2026

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    The only oil I use
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  • 5 star rating
    Smooth shift easy neutral
    By  PETER,  a  Verified Buyer  from  Sarnia Ontario   on  June 23, 2026

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    Great product 👌
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    When changing all the fluids
    By  DAVID,  a  Verified Buyer  from  Oklahoma   on  June 18, 2026

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    When changing your all three holes use nothing but Amsoil
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  • 5 star rating
    Incredible products
    By  JOHN,  a  Verified Buyer  from  San Antonio, Texas  on  June 12, 2026

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    Great products and with the three hole fluid change on my 2022 Road Glide Special the bike is running like a scalded dog and purring like a kitten.
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    Smooth
    By  DAVE,  a  Verified Buyer  on  May 30, 2026

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    Transmission shifts easier.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)

• Highlights

  • Protects against gear and bearing wear
  • Delivers smooth shifts
  • Helps eliminate loud thunks and gear noise
• Returns

  We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.

• Payments

  We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.

• Product Overview

  Custom-engineered for quiet operation to eliminate transmission whine. Enables smooth shifts for crisp acceleration through each gear. Delivers outstanding protection for long transmission life. Use in any V-twin transmission that does not share a sump with the engine, including those found on Harley-Davidson,* Triumph* and pre-2013 Indian* motorcycles.

  See the product data sheet for full details.

  PROMOTES QUIET OPERATION

  • Precise frictional properties deliver smooth shifts and help quiet transmission noise, letting you focus on enjoying the ride.
  • Forms a durable oil film on bearings and gears, helping to dampen loud thunks when shifting and reduce gear noise.

  DELIVERS SMOOTH SHIFTS

  • Helps you avoid missed shifts for crisp acceleration through each gear.
  • Provides confidence that your transmission is going to respond as intended for an improved ride.

  FIGHTS GEAR & BEARING WEAR

  • Resists viscosity loss due to shear and withstands extreme heat for excellent wear protection.
  • Robust molecules provide film strength to protect against damage from shock loading.
  • Extreme-pressure additives deliver additional protection against wear.

  See the product data sheet for full details.

  *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.

• Technical Specifications
  Data Bulletin

  Data Bulletins

  Warranty

  WARRANTY

  SDS

  SDS

  
  
  
• Product Reviews
  4.9 star rating

  Based on 496 reviews

  Based on 496 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Perfect
    By  DON,  a  Verified Buyer  on  August 09, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Great product. Quiet and smooth shifts
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    great oil
    By  TERRY,  a  Verified Buyer  from  Prtescott, Az.  on  July 30, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    This oil for motorcycles has a very high rating and it has been great for me
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    2006 Harley Road King
    By  JAMES,  a  Verified Buyer  from  Sarnia Ontario Canada   on  July 26, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    I'll never use any other , AMSOIL ONLY, AMSOIL PRIMARY FLUID AMSOIL TRANSMISSION FLUID AMSOIL ENGINE "OIL" DIFFERENT OILS FOR DIFFERENT APPLICATIONS,
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 4 star rating
    Information
    By  ALBERT,  a  Verified Buyer  from  Home  on  July 06, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Your transmission fluid needs to have the weights added example 75/90 or what ever it is actually. To most Harley Davidson motorcycle riders it's important for comparison for assurance that it will be of the HD level in weights. It would be a selling point it is for me at least same for Primary fluid .
    Was this review helpful?

    YES (8) NO (0)
  • 5 star rating
    Transmission
    By  HOWARD,  a  Verified Buyer  from  Tennessee   on  July 04, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Awesome product gives you smooth shifts, Highly recommend
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    Great product
    By  KEN,  a  Verified Buyer  on  June 27, 2026

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    Describe the issue

    Failed to verify captcha

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    The only oil I use
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Smooth shift easy neutral
    By  PETER,  a  Verified Buyer  from  Sarnia Ontario   on  June 23, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Great product 👌
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    When changing all the fluids
    By  DAVID,  a  Verified Buyer  from  Oklahoma   on  June 18, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    When changing your all three holes use nothing but Amsoil
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Incredible products
    By  JOHN,  a  Verified Buyer  from  San Antonio, Texas  on  June 12, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Great products and with the three hole fluid change on my 2022 Road Glide Special the bike is running like a scalded dog and purring like a kitten.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Smooth
    By  DAVE,  a  Verified Buyer  on  May 30, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Transmission shifts easier.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (1) NO (0)