123 Crisp Dr, Americus, GA. 31719


107 Thrasher Upgrade

113 Thrasher Upgrade

Twin Cam 98" Thrasher Upgrade

Milwaukee 8 Thrasher Upgrade


107 Thrasher Mail Order Kit

113 Thrasher Mail Order Kit

Twin Cam 98" Thrasher Mail Order Kit

Milwaukee 8 Thrasher Mail Order Kit


T124 07-up Engine

T124 99-06 Engine

T111 07-16 Engine

T111 99-06 Engine

T143 99-17 Engine

T143 99-17 Dyna Engine

S&S Engines

Hop Up Your Harley-Davidson®


with the V-Twin Specialists at Star Power!

Welcome to our selection of S&S Cycle replacement engines, upgrade kits, machine shop services,
dyno tuning, and much more for your Harley street motorcycle!

Call 800-841-STAR or click a section below to get started!

Harley-Davidson® Replacement Engines

from S&S Cycle

S&S Cycle Engines

Star Power 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


V-Twin Upgrade Kits

The 107" Upgrade Kit from Star Power 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 all of
our Harley® upgrade kits.

Including the 113 Thrasher Kit.


V-Twin Street Bikes

V-Twin Street Bikes

See what's available for your Harley V-Twin application. From replacement engines, 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

S&S Stealth Air Cleaner Kit

This is where we share our newest products for any V-Twin application. Click to check out the Stealth Air Cleaner from S&S Cycle.

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


V-Twin Parts

V-Twin parts for Harley-Davidson motorcycles

Browse our selection of V-Twin parts, including 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

V-Twin Machine Shop Services from Star Racing

Star Power offers a 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 Power, 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.


S&S Motorcycle V-Twin Engines and Street Bike and Drag Bike Specialists:


Harley®, Harley-Davidson®, Dyna™, Softail®, Twin Cam®, Evo®, Panhead® and Shovelhead® are words used for reference only.



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