The New 107 & 114 Milwaukee-Eight Engines

For 2017, Harley-Davidson® is launching the ninth generation of its venerable Big Twin, called the Milwaukee-Eight.

It is named in honor of its birthplace and its number of valves-twice as many as found on the Twin Cam motor that's been in the lineup since 1999. Harley-Davidson® says the new engine platform provides faster throttle response, more torque, better sound, improved fuel economy, and a smoother ride. The new engines, which retain their classic 45-degree V-twin architecture, will power all 2017 Touring and Trike models in two displacements and three variations.

• 107 Specifications + Performance

  
  • Bore 3.937 in
  • Stroke 4.375 in.
  • Displacement of 107 cu in
  • Compression Ratio 10.0:1
  • Engine Torque Testing Method J1349
  • Engine Torque 111.4 ft-lb
  • Engine Torque (rpm) 3,250
  • Lean Angle, Right (deg.) 32
  • Lean Angle, Left (deg.) 31
  • Fuel Economy: Combined City/Hwy 45 mpg

• 114 Specifications + Performance

  
  • Bore 4 in
  • Stroke 4.5 in.
  • Displacement of 114 cu in
  • Compression Ratio 10.5:1
  • Engine Torque Testing Method J1349
  • Engine Torque 124 ft-lb
  • Engine Torque (rpm) 3,250
  • Lean Angle, Right (deg.) 34.3
  • Lean Angle, Left (deg.) 33.4
  • Fuel Economy: Combined City/Hwy 43 mpg

Hear the Milwaukee-Eight Big Twin for yourself