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How to Build a Harley-Davidson Torque Monster

Creator: Bill Rook |

TUNING THE LENGTH OF YOUR INTAKE SYSTEM TO THE INDUCTION TRACT PULSE The best way to increase cylinder fill and exhaust scavenging is to tune your intake tract and exhaust tracts length to a specific rpm. For the intake tract, ...

740 pages

Donny's Unauthorized Technical Guide to Harley Davidson 1936 to Present, Volume II: Performancing the Twin Cam

Creator: Donny Petersen | Reference - 2008-12-30

The exhaust must be a suitable one or it will work against the engine and any potential power increases. There is no one-exhaust system that is superior neither in every situation nor for every Harley-Davidson engine. The stock exhaust ...

Publisher: iUniverse

About this book
Donny is the Winner of the 2012 International Book Awards. Donny Petersen offers the real deal in performancing your Harley-Davidson Twin Cam. Graphics, pictures, and charts guide the reader on a sure-footed journey to a thorough H-D Twin Cam performance understanding. Petersen's insight makes technical issues understandable even for the novice. Donny simply explains what unfailingly works in performancing the Twin Cam. This is the second volume of Petersen's long-awaited Donny's Unauthorized Technical Guide to Harley Davidson 1936 to Present. This twelve-volume series by the dean of motorcycle technology examines the theory, design, and practical aspects of Twin Cam performance. Donny studied privately with Harley-Davidson engineers, having worked on Harleys for over 35 years. He founded Toronto's Heavy Duty Cycles in 1974, North America's premier motorcycle shop. Donny has ridden hundreds of performanced Shovels, Evos, and Twin Cams across four continents doing all of his own roadside repairs. He has acquired his practical knowledge the hard way. Donny has the privilege of sharing his performance secrets the easy way. Donny will walk you through detailed performancing procedures like headwork, turbo-supercharging, nitrous, big-inch Harleys and completing simple hop-up procedures like air breathers, exhausts, and ignition modifications. Donny Petersen feels honored to share the wealth of his motorcycle knowledge and technical expertise.

Harley-Davidson Motorcycles

Creator: Bill Stermer |

Here's a common sight: a stock Harley exhaust system lying on the work bench because an aftermarket system is being installed. The stock system is heavy, restrictive, and not all that attractive. An aftermarket system can allow your bike to  ...

Exhaust Directory

Harley Exhaust Comparison - Harley Performance
Harley exhaust performance comparisons of stock and drag pipe exhaust systems. How to choose the right exhaust for your Harley Davidson Motorcycle.

Motorcycle Exhaust, Air Intake & Oil Filters from Rinehart ...
Cycle Solutions Online is a most trusted source for buying motorcycle exhaust, air intake & oil filters from Rinehart, K&N, Harley, Vance & Hine. You can also check ...

Harley Davidson | D & D Exhaust
2009-2016 Harley Touring X Cat 2:2 True X Header System. Harley Davidson XR 750 Flat Track Race System. 1995-2016 4"Touring Slip-on Muffler with Vortex Baffle

Screamin' Eagle Exhaust | Performance Exhaust | Harley ...
Screamin’ Eagle Exhaust at the Official Harley-Davidson® Online Store. Find Screamin’ Eagle slip-on mufflers, heat shields, header pipes and more!

Motorcycle Exhaust | Harley-Davidson USA
Take your bike to the next level with a customized Harley-Davidson exhaust. Shop motorcycle exhaust kits with chrome and jet black styles. Available online now.


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Gift Ideas

Chopper Bike Poster

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Chopper Bike Design
Price: $$25.50

The Louder the Pipes, the Smaller the Organ Bumper Sticker

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There's no need for loud motorcycle pipes. It's just losers trying to "mark" their territory -- like dogs. They think it's cool. But everyone knows it's just a childish attempt to say "Hey everybody, look at me!" Fight back. Let them know we know all about their inadequacy issues with this sure-to-annoy bumper sticker.
Price: $$5.00

Yellow Panhead with Pipes T-Shirt

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In Fameland we make some noise. art by Patrick Janicke
Price: $$36.70

Hp 01 laptop sleeve

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A Harley class 1948.
Price: $$32.90