Who is Jama?

Jama Engineering, manufacturers of Laser, Marshall and Jama exhaust systems, was founded in 1972. Since then, the company has developed into a dynamic company enterprise. Unique in the industry, Jama manufactures motorcycle exhausts ONLY. This specialization is your warranty for the very best product.

Jama is situated in a new purpose built building in Heinenoord, a small village just 10 kms south of the world's largest harbor, Rotterdam. The building incorporates all the latest computer controlled machinery to product Europe's best selling exhaust systems. The 450,000 sq ft factory, offices and warehouse employs a large staff of well trained and dedicated employees.

JAMA'S ENGINEERING METHODS

Every model of motorcycle requires a completely new designed exhaust system. The length and diameter of the front pipes, the way they are connected, the capacity and flow, the ratio of the muffler are calculated for every available dimension, number of cylinders, engine displacement, bore and stroke, valve and ignition timing, carburetion, engine speed, torque, performance and so on.

To check the available data, the Jama engineers first take a completely standard motorcycle in good condition and make several dyno-computer readouts of the noise, emission, power and torque. Tests are performed under different conditions. For instance, hot and cold, dry and humid. With this data, the research team starts developing an exhaust system. They are assisted by powerful computers with CAD and scientific programs.

A prototype is made from the initial drawings and tests are carried out in the proposed materials to measure power output, torque and noise emissions. Special care is taken to retain the center and side stands, access to the oil filter and drain plug, and to retain the standard carburetor settings for raid use whenever possible. After numerous tests on the dynamometer, on the race track and in every day traffic conditions, the prototype should then meet all these required standards, will be homologated through TUV, ABE, UTAC, BSI or ECE and is then put into production.

Ease of fitment by the motorcyclist is just as important as the quality. Every system is manufactured exactly as the prototype using the latest high technology machinery, with computer controlled tube bending and robot welders to ensure a quick and simple fit.

The chromium plating quality used by Jama is a duplex nickel layer with a micro-satin finish chrome with an average layer thickness of approximately 40 Mu. This duplex nickel layer gives 45% increase in corrosion resistance compared with a single layer of the same thickness. Together with a micro-satin chromium layer, the result is a corrosion resistant finish that meets the highest quality demands. This is proved by an ASTM (American Standard) rating 8/9.