1957 Sportster

The Sportster XL was introduced as “a modern, up-to-date power plant.”

Number produced: 1983¹⁾

Original Price: $1103

• Model Designation: XL

* Engine type: 4 cycle Overhead Valves, 45 degree V2 ((Harley-Davidson 1957 - 1969 Service Manual))
* Displacement: 55 ci / 900 cc
* Compression: 7.5:1
* Hemi-spherical style heads
* Bore: 3 in((https://books.google.de/books?id=bvwDAAAAMBAJ&pg=PA2&num=100&source=gbs_toc&cad=2#v=onepage&q=sportster&f=true))
* Stroke: 3 13/16 in((https://books.google.de/books?id=bvwDAAAAMBAJ&pg=PA2&num=100&source=gbs_toc&cad=2#v=onepage&q=sportster&f=true))
* 90 Degree Valve Angle
* Horsepower: 42 @ 5,500rpm ((Harley-Davidson 1957 - 1969 Service Manual))
* Torque: 48 ft-lb @ 3600 RPM

• Fuel capacity: 4 gal / 15.14 l²⁾
• Oil Capacity: 3 qts. / 2.83 l ³⁾
• Transmission Capacity: 1.5 pints / .71 l ⁴⁾
• MPG: 50mpg (est.)⁵⁾

• Weight: 495 lb / 225 kg⁶⁾
• Wheelbase: 56.5 in / 143.51 cm ⁷⁾
• Overall Length: 87 in / 221 cm ⁸⁾
• Overall Width: 34 in / 86.36 cm ⁹⁾
• Road Clearance: 2.5 in minimum / 6.35 c minimum

• XL

• Pepper Red / Black Tank Panels¹⁰⁾
• Skyline Blue / Birch White Tank Panels¹¹⁾
• Birch White / Black Tank Panels¹²⁾
• Black / Pepper Red Tank Panels¹³⁾

1957 Parts Manual¹⁴⁾

Back to Sportster History Index