THE 1975 RUPP'S: There were approximately 20,000

Rupps produced and manufactured in 1975. Below you

will find pictures and specs on the 1975 models.

In 1975 there were two Rupp Nitro's available.  The 1975 Nitro

340 and 440 and The all new Rupp Nitro FA.  The 1975 Nitro was basically the same as the 1974 Nitro II.  It had an upgraded drive clutch and some different stripping on the side of the body.  The engines, track and suspensions were the same as the 1974 Nitro II's.

The 1975 Rupp Nitro FA was a totally new performance snowmobile.  There were two models available.  The Rupp Nitro 340FA  with a Kohler K340-2RS free air engine and The Nitro 440FA had a Kohler K440-2RS free air engine. The engines featured a crankcase air duct and twin Mikuni carburation.  Two tuned pipes that snaked into a single removable muffler.

The slide suspension had a 16 inch grauser bar track and a friction free torque converter.  Aluminum racing skis

It came standard with a tachometer.

Performance:  Add everything up and you've got one moving machine.