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July 9, 2018 - What could you do with an extra $1,000? We'll let you decide because that's roughly how much you'd save by opting for a Hulten Speed Sports Sinister line of custom-designed performance packages over the "Screamin Chicken" line of feed!

Real world dyno numbers don't lie! Check out these numbers we pulled during a dyno comparison of a HD Screamin E, 114ci Stage 4 set up versus a Stock 107ci m8 V-Twin equipped with a HSS Sinister 107 Stage 1 performance package. Dyno-proven performance that won't break the bank!

*Disclaimer: We Love H-D bikes and products. We just Love making them BETTER!

Operating Hours:
MONDAY - FRIDAY: 9:00 AM - 5:00 PM

​SATURDAY: by Appointment Only



6623 State Hwy 29
St. Johnsville, NY 13452

About Us


Nestled in the foothills of New York State's Adirondack Park National Forest, Hulten Speed Sports is dedicated to the research and development and manufacturing of performance components and tuning packages for the V-twin motorcycle industry.

Specializing in Harley-Davidson™, Victory™ and Indian Motorcycle™ V-twin performance development, Hulten Speed Sports is a Dynojet Certified Tuning Center.

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Our Services


  • Chassis Dyno performance tuning

  • Engine Dynomometer

  • In-house CNC machined cylinder heads

  • Head porting and valve seating

  • Cylinder Boring & Honing

  • EFI Fuel Mapping & Tuning

  • Engine Rebuilding

  • Sinister Engine Performance Kits 

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