Ski-Doo TNT 640 Snowmobile (1970-1972)

The Ski-Doo TNT 640, produced from 1970 to 1972, was a high-performance snowmobile known for its robust design and powerful Rotax engine. It represented a significant offering in Ski-Doo's lineup during the early 70s, catering to riders seeking speed and durability. For 1970 and 1971, the TNT 640 typically featured a 635.1 cc engine producing around 35 horsepower, available in trims like "w/Bogies" and "S F/C" or "S". The 1972 model year marked a notable evolution, introducing a completely new body and chassis design. This updated platform for the 640 and 775 models included a wider and longer chassis, an 18-inch track, and enhanced suspension components. The 1972 TNT 640 also received an upgraded 640 Rotax engine, now equipped with a dual carburetor setup, boosting its output to approximately 52 horsepower. This represented a significant performance and structural improvement over previous years. FAQ:

Q: How do I find parts specific to my 1970-1972 Ski-Doo TNT 640?

A: To ensure perfect compatibility, please use the year and model selector at the top of this page.