When the Softail Standard was released last year and functionally the same motorcycle as the Street Bob, we knew something had to be afoot at Harley-Davidson. This year, all is revealed, as the 2021 Harley-Davidson Street Bob goes big with a Milwaukee-Eight 114 powerplant.

1. The 2021 Harley-Davidson Street Bob gets the torque-tuned Milwaukee-Eight 114 engine.
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https://ultimatemotorcycling.com/2021/01/20/2021-harley-davidson-street-bob-114-first-look-6-fast-facts/