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S&S® Street Pro Engines

For 1999 and Up Big Twins

E-mail or call 800-841-STAR


The S&S Street Pro engine was first introduced as part of the Tribute 145 finale in August of 2003 at the Broken Spoke Saloon in Sturgis, SD. A Street Pro bike built by S&S, G2 Motorsports and Gail's Harley-Davidson® was a result of George Smith's desire to build a big bore competition engine for 1999-up big twins and Brett Smith's desire to pay tribute to S&S Cycle's racings roots.

S&S and Star Racing offer a number of engine packages designed for competition in the AHDRA Street Pro Class ranging from 120" to 139" (the 120" is also AHDRA Pro Mod legal). All S&S Street Pro engines are 45° V-twins, built with the S&S TCSA crankcases including the S&S gear drive cams.

The S&S Street Pro Engines are available with rear motor mounts for either 1984-'99 chassis or for 1999-up chassis.  Engines with the 1999-up style rear motor mount are intended for use with Harley-Davidson® transmission for 1999-up. Engines with the 1984-'99 style rear motor mount can be installed in any 1984-'99 style frame, providing the frame will accommodate the taller heads and Pro Stock style exhaust location.  

  • S&S TCSA crankcases
  • 1984-'99 or 1999-up style rear motor mount
  • S&S gear drive cams
  • S&S Pro Stock style flywheel assembly
  • 8.500" billet aluminum rods with 1.500" crankpin
  • S&S cast Pro Stock cylinder heads w/electric compression releases.

Dual S&S Super D carburetors with air cleaner assemblies sold separately.

Turn key options, ignition system, driveline components, etc. available from Star Racing.

S&S Street Pro Engine

View dyno sheets and customer bikes below


Call 800-841-STAR or e-mail for updated pricing & details.

S&S STREET PRO ENGINE

Displacement

Bore

Stroke

Chassis Capability

Part No.

MSRP

120” (also Pro Mod)

4.600”

 

3.600”

1999-’06 Big Twin

31-9355

Call for pricing

800-841-7827

1954-’99 Big Twin

31-9357

133”

 

4.000”

 

1999-’06 Big Twin

31-9317

1984-’99 Big Twin

31-9419

139”

 

4.187”

1993-’06 Big Twin

31-9356

4.800”

 

3.850”

 

1999-’06 Big Twin

31-9421

1984-’99 Big Twin

31-9420




Dyno Sheets - S&S® Street Pro Engines

 

S&S 120" Street Pro Engine

 

S&S 133" Street Pro Engine

 

S&S 139" Street Pro Engine


Customer Bikes - Street Pro Engines

 

Bonneville Bike
Owner - John Yeats
Driver - Eric Bennett
Engine - 133" S&S Street Pro
Bike in building stage

Bike on the Salt Flats

This Street Pro Engine from Star Racing powers up customer John Yeat's Bonneville race motorcycle. John got his start setting land speed records in 1970 at Bonneville with the Harley-Davidson Land Speed Record Team and a record of 265.492 mph.

More than 38 years later, John returned to the salt with a new bike built to go fast! After being referred to Star Racing, John and Star Racing General Manager, Derek Churchwell, decided that the S&S Street Pro Engine would be the best fit for his need for speed!

John and his team took the bike to the flats and were very pleased with how fantastic the bike handled. However, transmission problems kept them in the pits that year.

They are excited to be headed back to Bonneville with an updated Street Pro Engine and new body package to set a world land speed record!

 

Other Customer Bikes - Street Pro Engines
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