Welcome to the home of Design Logic Bikes U.S.A.

Design Logic Bicycles are the finest utility bicycles designed and handbuilt in the U.S.A. when Lance Portnoff owner and test pilot set out to to build a design from scratch "we wanted to make the best" the prototype was designed, built, tested, and raced by Lance to a 9th place finish in the 2010 death race in Arizona. The patented design since has been shortened, stiffened, braced and tuned to provide the ultimate ride. With over 300 test hours on the current model, the "Da Bomb" and our newest shorter model "Da Trail" represent a proven design with the strength to back it up, the "built in" rack on the rear of the frame can carry 150 lbs and the bike can be pedaled with or without an engine running. The 'Da Bomb' has 2 mounts for a Staton gearbox bolt pattern giving a perfect chain alignment to a Staton rear dual drive hub. Speeds up to 30 mph and 150 mpg can be acheived with either the Subaru EHO 35 cc or Honda GHX 50  4 stroke engines. The shorter wheelbase "Da Trail" is a perfect platform for many E bike kits. Frames are powdercoated to choice of color as well as the parts selection and wheelbuilding. Please feel free to contact us with any questions.

Thank you for visiting our site and intrest in our products.