This unique and patented concept allows us to transform your Harley® into three different types of vehicles:  firstly, into a Quad, secondly into a Trike with a two-wheel frontend or thirdly, into a Trike with a two-wheel backend. 


The complete transformation entails no drilling, welding or any other permanent alteration of your original Harley-Davidson® motorcycle frame or chassis. 

We have chosen a suspension design derived from the classical Formula 1 race car. The benefits of this design compared to a rigid-axel design of many comparable products are enormous and speaks for itself. 

The wheel geometry is adjustable as well as the vehicle height and suspension characteristics.

Due to the implementation of our differential, the vehicle’s handling is perfectly neutral even in the tightest curves which also attributes to safety and tracking.

The frame covers and fenders are handmade of high-quality fiber glass. You also have the option of integrating a solo or dual seat on your Q-Tec.The Q-Tec concept distinguishes itself from other designs and concepts by its patented, independent three and four wheel suspension and innovative design. By implementing this system onto a Harley-Davidson® bike, it will be transformed into a very unique trike or quad. The Q-Tec concept is a high-quality product that can be considered as the “Rolls-Royce” of the trikes and quads. The integral core of the design is the patented differential which in itself is the sole basis of the overall concept of Q-Tec. It was specifically developed for this venture.

​The differential is particularly compact in dimension and can be fitted with either gear/chain traction or belt traction and yields enough potential for custom applications and adjustments. 
The suspension is adjustable in three modes but can be fitted and extended with customer specific set-ups. In combination with our independent suspension, a spectacular drive-ability and to date unknown level of driving comfort and safety has been attained.

​This revolutionary concept is extensively tested by Q-Tec Engineering on all kinds of road conditions under all circumstances. Only when all tests have been proven successful, are we satisfied and can provide a product that will perform any time and any where in the world. 
Custom Motorcycles Harley Parts three wheel motorcycle

Q3F Concept front end - the innovative Trike

The unique and patented concept provides the option to transform your Harley-Davidson® into a
Trike by implementing our frontend set-up. This gives you a Trike with a two-wheel frontend and a single-wheel original backend. 
The complete transformation entails no drilling, welding or any other permanent alteration of your original Harley-Davidson® motorcycle frame or chassis.

​Q3R Concept backend

The unique and patented concept provides the option to transform your Harley-Davidson® into a
Trike by implementing our backend set-up. This gives you a “classical” Trike with a two-wheel backend and a single-wheel original frontend. 
The complete transformation entails no drilling, welding or any other permanent alteration of your original Harley-Davidson® motorcycle frame or chassis. 

As with all of our variations, we have chosen a classical Formula 1 race car suspension set-up.
The complete frontend remains unchanged and original unless otherwise specified by the customer. 

The frame covers and fenders are handmade of high-quality fiber glass.

Q-Tec Engineering in Belgium has been manufacturing the Q-Tec kits for over ten years.  American Q-Tec is the North American Distributor for this amazing product and is proud to bring this concept to America. 

​Q-Tec Engineering Home.



Harley®, Harley-Daivdson®, and Softail®

are registered trade marks to which we neither express or imply any affiliation with or endorsement from.

Together they make a Quad

The Q-Tec Story.


480-773-2134 

Gilbert AZ 85297 US

Harley Parts