Product Placement Blog ➞ BicyclesKlein Bike in Seinfeld Season 5 Episode 12 “The Stall” (1994)December 4, 2019 Sergey TV Show Hi! On Wednesday, December 4, I watched a TV Show and product placement was spotted: Klein Bike in Seinfeld Season 5 Episode 12 “The Stall” (1994).