Why do Harley-Davidsons have a 45-degree V-twin engine?
It's one of the most recognisable engine designs in motorcycling.
The distinctive sound, appearance and character have become closely associated with Harley-Davidson.
But why did Harley choose a 45-degree V-twin design?
Was it:
A) To make the motorcycle lighter
B) To improve fuel economy
C) To fit the engine into a compact frame design
D) To reduce manufacturing costs
Put A, B, C or D in the comments before looking up the answer.
We'll reveal the answer tomorrow.