The MJPower engineering Company was started by Michael Jansberg in 1991 as a small Motorcycle Tuning Garage.

After the early years with trimmed Mopeds and small Motorcycles, the tuning for myself and others really started with street racing in American Muscle Cars in the late 70's.

Then switching over to real two-stroke Road Race Bikes during the 80's, culminating in a couple of Suzuki works RG500 racers and participating in the 500cc GPs.

Today we have specialized in modern 4-stroke Motorcycle engines mainly for racing and serious street use, but we also do more advanced Car engine work and a bit of 2-stroke from time to time.

Link to a Gallery of our Cylinderhead work.

MJPower Camshaft design.


Some of our international Riders

Sam Lowes                                                                  Gino Rea

Massimo Roccoli                                                                  Robbin Harms

Klaffi Honda Lauslehto                                                  Team Stiggy Honda