Product Placement Blog ➞ BicyclesKlein Bike in Seinfeld Season 6 Episode 6 “The Gymnast” (1994)December 9, 2019 Sergey TV Show Hi! On Monday, December 9, I watched a TV Show and product placement was spotted: Klein Bike in Seinfeld Season 6 Episode 6 “The Gymnast” (1994).