If you've ever wanted to sit on it ... now's your chance -- because The Fonz's iconic motorcycle from "Happy Days" is hitting the auction block next month.
The 1949 Triumph Trophy TR5 hasn't been ridden since the show ended in 1984 -- and for the last 15 years, it's been gathering dust in some motorcycle shop.
Auctioneers expect the bike to fetch in the $90,000 range -- which is shocking ... because the damn thing doesn't run anymore. And it's speedometer is broken.
The auction takes place on November 12 in L. Aaaaay.
The Fonz's Motorcycle
Hitting the Auction Blockamundo
10/10/2011 7:00 AM PDT BY TMZ STAFF
Get TMZ Breaking News alerts to your inbox