Subjects>Auto>Commercial Vehicles

When was 21 speed trucks made?

Anonymous

∙ 12y ago

Updated: 9/23/2023

Not a question that is answerable.

The 21 speed spicer was available in the 1970's and 80s.

There have been variations of the "21" speed box since the first Heavy truck hit the high way.

Wiki User

∙ 12y ago

What else can I help you with?

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