INSIDE LOOK OF A 1975 YAMAHA GPX

 Leading the way in the Yamaha line for 1975, was the high performance GPX series of snowmobiles.
Yamaha offered 338G and 433G models with free air twin cylinder engines.  Both rode on a 15-inch reinforced rubber track, have an aluminum frame, slide rail suspension, autolube oil injection, disc brakes, intake silencer, tether switch, parking brake, gas and oil gauge, and CD ignition.