Donny’s Unauthorized Technical Guide to Harley-Davidson

Peterson

Donny’s 740-page book, Donny’s Unauthorized Technical Guide to Harley-Davidson, 1936 to Present: Volume I: The Twin Cam, guides the reader on a surefooted journey to a thorough understanding of the H-D Twin Cam. Petersen’s insight paired with hundreds of graphics, pictures, and charts makes complicated technical subjects easy to grasp, especially for the motorcycle novice. […]

TECHLINE Donny’s Technical Guide Book

Donny's Book

There are two primary ways to become skilled at bike wrenching: go to tech school or learn on your own. The amount of available material is infinite, and it could take a lifetime to sort the good from the not so good, if you choose the latter route. Thankfully, however, there is one printed resource […]