What is an S&S Motorcycle Engine? [Specs Chart]

S&S motorcycle engines are high-performance V-twin power sources designed for Harley-Davidsons and other big-bore V-twin cruisers. These unique engines feature displacements of 1311cc – 2343cc and produce up to 162 HP. If you want to find out more about these amazing power mills, this post is for you.

From the specifications to the key facts about the manufacturer, we at PowerSportsGuide have compiled everything into this S&S motorcycle engine review!

What is an S&S Motorcycle Engine?

S&S Cycle is a well-known motorcycle engine manufacturer established in 1958 by Stanley Stankos and George J. Smith. The American company entered the market by selling aftermarket pushrods for Harley motorcycles and then slowly expanded over the years. Today, S&S Cycle designs and produces a wide variety of aftermarket motorcycle parts like clutches, exhaust systems, performance kits, and complete “bolt-in” engines.

Since its founding, the company has been one of the most well-known motorcycle engine manufacturers in the marketplace. Besides cruisers, S&S engines appear in Morgan 3-wheel cars as well.

Although S&S Cycle always had a strong relationship with Harley-Davidson, this cooperation didn’t always go smoothly.

In 2005, H-D filed a trademark and patent infringement lawsuit against S&S, claiming that the aftermarket manufacturer used H-D trademarks and copied parts without permission.

Are S&S Motorcycle Motors Good?

S&S motorcycle engines are known for their high quality and outstanding performance. When it comes to the durability of S&S engines, with reasonable use and proper care, you can expect many trouble-free miles from them. But as with any other motorcycle engine, neglected maintenance and abuse like wheelies and burnouts can significantly reduce their lifespan and reliability.

However, relatively little information is available on S&S engine durability long term. Why?

These engines are typically used in custom-built bikes, which usually don’t see many miles. But if you are looking for a great write-up on the long-term reliability of S&S engines, don’t miss this great post on the topic.

FAQs About S&S Engines

Let’s drill into the details and check out the most frequent questions about S&S engines!

How Much Do S&S Engines Cost?

As a rule of thumb, the prices of S&S motorcycle engines range from $5,000 up to $13,000. The cheapest S&S engine is the V80 Long Block for 1984-’99 Big Twins. This unit costs less than $5,000. On the other end of the spectrum, you can find the most expensive S&S engine, the KN93, available for $12,599.

Which S&S Engine is the Biggest?

The Biggest S&S engine is the T143 Long Block, specifically designed for Harley-Davidson motorcycles. This 2343cc (143ci) power source produces a fantastic performance of 162 HP with 151 ft.-lb. of torque.

What Size Motors does S&S Make?

S&S Cycle currently offers engines with six different displacements, varying from 1311cc to 2343cc. To be more precise, the available S&S engine displacements are as follows:

  • 134ci – 2343cc
  • 124ci – 2032cc
  • 111ci – 1819cc
  • 96ci – 1573cc
  • 93ci – 1524cc
  • 80ci – 1311cc

What Kind of Oil do S&S Engines Use?

The manufacturer recommends its own custom 20W/50 synthetic oils for S&S engines.

Does S&S do Engine Rebuilds?

No, S&S Cycle doesn’t offer engine rebuilds, just complete “bolt-in” aftermarket engines. However, investing in a new S&S engine can be more economical than an engine rebuild, especially considering these units come with a two-year warranty.

Where are S&S Engines Made?

S&S motorcycle engines are proudly made in the US. The company had been operated and headquartered in Viola, WI since 1969, but in 2004 opened an additional factory in La Crosse, WI.

Is S&S a Harley motor?

Contrary to popular belief, S&S engines are not made by Harley-Davidson. Instead, S&S Cycle is an aftermarket manufacturer that produces replacement engines for Harley-Davidsons and other V-twin cruisers.

How do You Know What S&S Engine You Have?

If you want to know the exact type of your S&S engine, you have to send the serial number to the manufacturer for further information. You can find the serial number on the engine’s left (primary) side, just below the cylinders. This number is also known as “S&S motorcycle engine identification number.”

Is S&S Cycle Still in Business?

Yes, to the delight of many fans, S&S Cycle is still in business. The popularity of S&S engines and performance parts has been unbroken since the company’s introduction in 1969.

S&S Engine Specifications

S&S Engine List

S&S Cycle currently offers several different engines, which are as follows:

  • T134
  • T124, V124
  • T111, V111
  • V96, V96R
  • KN93
  • SH93
  • P93
  • V80, V80R

For your convenience, we’ve done the research and compiled the key specifications of these S&S engines into one chart:

S&S Engine Specification Chart

EngineDispl. (ci)Displ. (cc)HPTorque (ft-lb)Bore (“)Stroke (“)Comp. RatioCam.
T13413423431621514.4254 5/810.5:1635
T12412420321321334 1/84 5/810.8:1640
V12412420321281334 1/84 5/810.8:1640
T1111111819na1234 1/84 1/89.8:1585
V11111118191161234 1/84 1/89.8:1585
V96961573nana3 5/84 5/89.5:1585
V96R961573nana3 5/84 5/810.1:1520
KN9393152462843 5/84 1/28.2:1420
SH9393152496973 5/84 1/28.5:1585
P93931524nana3 5/84 1/28.5:1585
V80801311nana3 1/24 5/89.5:1585
V80R801311nana3 1/24 1/410:1520

Source: S&S Engines. This chart is for informational purposes only! For exact specifications, please refer to the factory manual.

Let’s drill into the details and look at the specs of the currently available and some discontinued S&S engines!

S&S Engine Specs

How much horsepower does an S&S 107 motor have?

The S&S 107 engine has about 104 HP and 110 ft.-lb. of torque.

How many cc is an S&S 107 engine?

The S&S 107 engine features a displacement of 1735cc, which translates to 107 cubic inches.

How much horsepower does an S&S V111 motor have?

The S&S V111 engine produces 116 HP and 123 ft.-lb. of torque.

How many cc is an S&S V111 engine?

The displacement of the S&S V111 engine is 1819cc.

How much is an S&S V111?

The price of the S&S V111 engine is about $6,000-$7,000, depending on its design, color, and features.

How much horsepower does an S&S T111 motor have?

The S&S T111 engine has approximately 115 HP and 123 ft.-lb. of torque.

How many cc is an S&S T111 engine?

As its name suggests, the S&S T111 is a 111ci engine, which means 1819cc.

How much is an S&S T111?

The S&S T111 costs about $7,000-$7,500.

How much horsepower does an S&S 113 have?

The high-performance S&S 113 engine produces about 110 HP.

How many cc is an S&S 113 engine?

The S&S 113 power plant has 1852cc, which translates to 113 cubic inches.

How much horsepower does an S&S 117 have?

The S&S 117 engine provides approximately 115 – 120 HP and 128 ft.-lb. of torque.

How many cc is an S&S 117 engine?

The S&S 117 features a displacement of 1917cc, which means 117 cubic inches.

How much horsepower does an S&S V124 have?

The S&S V124 engine offers 128 horsepower and 134 ft.-lb. of torque.

How many cc is an S&S V124 engine?

The S&S V124 features a displacement of 2032cc which means 124 cubic inches.

How much is an S&S V124?

The price of the S&S V124 ranges from $6,500 up to $7,500, depending on the color and the features.

How much horsepower does an S&S T124 have?

The S&S T124 engine produces 132 horsepower and 134 ft-lb of torque.

How many cc is an S&S T124 engine?

The S&S T124 features a displacement of 2032cc which means 124 cubic inches.

How much is an S&S T124?

The S&S T124 engine costs about $7,000-$8,000 depending on its color and features.

How many cc is an S&S T143 engine?

The S&S T143 is the biggest engine in the fleet featuring a displacement of 2343cc (143 cubic inches).

How much horsepower does an S&S T143 have?

The S&S T143 engine offers a fantastic performance: 162 horsepower and 151 ft.-lb. of torque.

How much is an S&S T143?

The S&S T143 is one of the most expensive S&S engines in the fleet as it costs about $10,000-$11,000.



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