 This was a limited-edition model with only 300 units made.A limited-edition F4 AGO had been planned based on the SPR, but a change in plan saw the AGO use the new 1,000 cc engine.To use the 750 SPR engines that were intended to go into the AGO, the SPR engines were put into 750S chassis and the model designated the F4 750 SR. Gold exhausts similar to the Serie Oro were added, and white faced instruments which displays Agostini's signature in red, as later used on the AGO model, were added.