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Premium wear protection
Smooth, confident shifts
Cool, clean performance
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.
We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
Specially engineered for maximum performance in engines and transmissions on four-stroke metric sport bikes, cruisers, touring motorcycles and adventure bikes. Wet-clutch compatible for smooth, confident shifts. Robust heat resistance and wear protection. Maintains viscosity. Advanced detergency cleans critical components.
Exceeds the standard for high-temperature film strength to deliver excellent wear protection.
Keeps engines running cool by effectively reducing friction and heat.
Contains a heavy treatment of anti-wear additives to reduce wear regardless of operating conditions.
Extremely resistant to volatility and engineered to prevent damaging sludge and carbon deposits for superior engine cleanliness.
SMOOTH, CONFIDENT SHIFTS
Contains no friction modifiers and promotes smooth shifting and positive clutch engagement.
Engineered to control heat and prevent slippage and glazing, promoting long clutch life.
CONTROLS FOAM
Contains advanced anti-foam additives that help prevent foam for reliable wear protection, allowing riders to confidently push their bikes to the limit.
This product works great on my 2014 triumph America
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Fantastic oil
By 
BRAD, 
a 
Verified Buyer 
from 
Port Moody 
on 
April 28, 2026
This is the one... Compare to others.. meets/exheeds the standards and is 100% synthetic. You can't go wrong.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
ZX 14
By 
DON, 
a 
Verified Buyer 
on 
April 23, 2026
Haven’t used it yet… still putting a few break miles on original oil… but soon I’m dumping that OEM oil and using Amsoil for the rest of its life… Like all my motorcycles , trucks n cars I own… Amsoil n Wix filters is all I ever use..
Used Amsoil in my 2014 Harley. Rode that bike over 157,000 miles. Oil is the life blood of an engine ... Amsoil obviously goes the distance. I use Amsoil Metric in my 2 year old Royal Enfield SM 650 ... Superior product ... great engine protection.
I run this oil in two Pan Americas. In my 2022 model when I bought it used it had 4500 miles on it, owned by a HD Master Tech. Always used HD 15w-50 oil. I changed oil in it as soon as o bought it, using Amsoil 15w-50 Metric Motorcycle oil. The magnetic drain plug was covered either fuzz when I drained the HD oil. After 3500 miles with the Amsoil, I changed the oil again and there was very very little fuzz. Just one spot on the mag was lug. With the Amsoil the bike starts quieter, no valve train rattle, shifts better, runs quieter. The other PA was purchased new 2024, nothing but Amsoil has been in it since new, never any fuzz on the drain plug, starts and runs quiet, shifts great, runs cool. Amsoil is the best protection policy for the drivetrain you can buy. Great stuff!!
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Amsoil 10w40 Metric Motorcycle Oil
By 
ROBERTO, 
a 
Verified Buyer 
from 
Oak Forest, IL 
on 
February 11, 2026
I use this oil in both Motorcycles and It's the best. Superior protection against thermal break down. I noticed that I gained a little bit of horsepower and the engine runs cooler even in 90°+ days in traffic. My Motorcycles never overheat.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
Premium wear protection
Smooth, confident shifts
Cool, clean performance
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.
We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
Specially engineered for maximum performance in engines and transmissions on four-stroke metric sport bikes, cruisers, touring motorcycles and adventure bikes. Wet-clutch compatible for smooth, confident shifts. Robust heat resistance and wear protection. Maintains viscosity. Advanced detergency cleans critical components.
Exceeds the standard for high-temperature film strength to deliver excellent wear protection.
Keeps engines running cool by effectively reducing friction and heat.
Contains a heavy treatment of anti-wear additives to reduce wear regardless of operating conditions.
Extremely resistant to volatility and engineered to prevent damaging sludge and carbon deposits for superior engine cleanliness.
SMOOTH, CONFIDENT SHIFTS
Contains no friction modifiers and promotes smooth shifting and positive clutch engagement.
Engineered to control heat and prevent slippage and glazing, promoting long clutch life.
CONTROLS FOAM
Contains advanced anti-foam additives that help prevent foam for reliable wear protection, allowing riders to confidently push their bikes to the limit.
This product works great on my 2014 triumph America
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Fantastic oil
By 
BRAD, 
a 
Verified Buyer 
from 
Port Moody 
on 
April 28, 2026
This is the one... Compare to others.. meets/exheeds the standards and is 100% synthetic. You can't go wrong.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
ZX 14
By 
DON, 
a 
Verified Buyer 
on 
April 23, 2026
Haven’t used it yet… still putting a few break miles on original oil… but soon I’m dumping that OEM oil and using Amsoil for the rest of its life… Like all my motorcycles , trucks n cars I own… Amsoil n Wix filters is all I ever use..
Used Amsoil in my 2014 Harley. Rode that bike over 157,000 miles. Oil is the life blood of an engine ... Amsoil obviously goes the distance. I use Amsoil Metric in my 2 year old Royal Enfield SM 650 ... Superior product ... great engine protection.
I run this oil in two Pan Americas. In my 2022 model when I bought it used it had 4500 miles on it, owned by a HD Master Tech. Always used HD 15w-50 oil. I changed oil in it as soon as o bought it, using Amsoil 15w-50 Metric Motorcycle oil. The magnetic drain plug was covered either fuzz when I drained the HD oil. After 3500 miles with the Amsoil, I changed the oil again and there was very very little fuzz. Just one spot on the mag was lug. With the Amsoil the bike starts quieter, no valve train rattle, shifts better, runs quieter. The other PA was purchased new 2024, nothing but Amsoil has been in it since new, never any fuzz on the drain plug, starts and runs quiet, shifts great, runs cool. Amsoil is the best protection policy for the drivetrain you can buy. Great stuff!!
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Amsoil 10w40 Metric Motorcycle Oil
By 
ROBERTO, 
a 
Verified Buyer 
from 
Oak Forest, IL 
on 
February 11, 2026
I use this oil in both Motorcycles and It's the best. Superior protection against thermal break down. I noticed that I gained a little bit of horsepower and the engine runs cooler even in 90°+ days in traffic. My Motorcycles never overheat.
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