AJP was founded circa 1987 in Portugal by Antonio J Pinto – a 7x Portuguese National Enduro Champion.  The first model AJP created back then was the Arianna 125 using a 2-stroke engine.  Then from 1991 to 2000, AJP using bikes of their own creation participated in their native National Enduro series – winning the championship 5x in a row – 1996 thru 2000.  During those years they also raced in their native National Off-Road series winning that title 3x – in 1996, 1997, and 2000.  It was during those years of racing and winning many titles that technical solutions and core values of AJP were clearly defined – setting the foundation for a bright future.

In the early 2000’s AJP applied all their know-how of racing and design into the first PR4 series model using then, a 125 4-stroke engine and a full steel frame.  Already the unique traits affiliated with AJP to this day were used on the early model PR4.  Technical ideas such as a short wheelbase, fuel-tank under seat, narrow stand-over width, and high-end suspension components were present on that very first PR4.

In 2007 the latest version of the AJP frame is introduced – a hybrid Aluminum-Steel structure that combines lightweight and low cost to manufacture in one complete package.  Once this platform was introduced is wasn’t long before the new models started rolling out such as a ergonomically smaller model called the PR3.  The PR3 shares almost all the same components and features with its bigger brother the PR4 with the exception of swing-arm, forks, wheel-set, and frame steering head to seat relationship.  The shorter distance from the steering head to the seat shortens the wheelbase on this model and also allows for riders of smaller build to easily reach the hand controls and feel comfortable on this bike.