Harley-Davidson® Replacement Engines

from S&S Cycle

Star Racing offers a full range of V-Twin replacement engines for Harley-Davidson® Dyna™, Softail® and Touring models.

These state-of-the-art engines manufactured by S&S Cycle offer a huge increase in the horsepower and torque of your stock
Harley-Davidson engine.

Click for a full list of our V-Twin engines.

V-Twin Upgrade Kits

featuring the 107" Thrasher Upgrade Kit

The 107" Upgrade Kit from Star Racing has helped some customers gain up to 56 horsepower! The kit normally produces 120+ horsepower, depending on your current exhaust system.

We also offer other upgrade kit options for Harley-Davidson® 1999-2012 models.

Click for details and pricing on
our Harley® upgrade kits.

V-Twin Street Bikes

See what's available for your Harley V-Twin application. From replacement engines to custom exhaust systems, we have everything you need to make your street bike go crazy fast!

Click to view options for nearly
any V-Twin street bike.

World-Famous V-Twin Drag Bikes

The S&S Pro Stock billet engine is a 160 cubic inch pushrod engine in a 60º V-Twin configuration. The engine configuration is legal for competition in the NHRA Pro Stock and AHDRA Pro Gas divisions.

Click for more information, pricing and
motorcycle specifications.

New Products

The latest, hottest V-Twin parts and upgrades

This is where we share our newest products for any V-Twin application. Click to check out the new Throttle Hog throttle bodies or Stealth Air Cleaner from S&S Cycle. This page also features our Hot Cam Upgrade Kit and Chain Tensioner Conversion Upgrade.

Click to view our list of new products
for Harley® & V-Twin models.

V-Twin Parts

Browse our selection of V-Twin parts, including custom exhaust systems, air cleaner kits, big twin crankcases, throttle bodies, cam kits, B2 heads and more for your Harley®!

Click for details on the
V-twin parts that we offer.

V-Twin Machine Shop Services

Star Racing offers a wide variety of IN-HOUSE machine shop services to get your motorcycle performing up to par.

We specialize in cylinder head repair, porting, performance valve jobs and boring for new pistons, plus honing with torque plates.

Click for more information about our in-house machine shop services.

Dyno Tuning & Mapping

Dyno Tuning, sometimes known as dyno testing or mapping, is essential to realizing the full potential of today's fuel injected and carbureted motorcycles with performance modifications.

At Star Racing, we have technicians who are trained to map Power Commander, Harley-Davidson® Pro Super Tuner and other aftermarket devices for your V-Twin motorcycle.

Click for more information on our dyno services.