1957 Sportster

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

Number produced: 1983¹⁾

Original Price: $1103

• Displacement: 55 ci / 900 cc
• Compression: 7.5:1
• Hemi-spherical style heads
• Bore: 3 in²⁾
• Stroke: 3 13/16 in³⁾
• 90 Degree Valve Angle
• Horsepower: 40hp @ 5,500rpm⁴⁾
• Weight: 495 lb / 225 kg⁵⁾
• Fuel capacity: 4 gal / 15.14 l⁶⁾
• Oil Capacity: 3 qts. / 2.83 l ⁷⁾
• Transmission Capacity: 1.5 pints / .71 l ⁸⁾
• MPG: 50mpg (est.)⁹⁾
• Wheelbase: 56.5 in / 143.51 cm ¹⁰⁾
• Overall Length: 87 in / 221 cm ¹¹⁾
• Overall Width: 34 in / 86.36 cm ¹²⁾
• Road Clearance: 2.5 in minimum / 6.35 c minimum

• XL

• Pepper Red / Black Tank Panels¹³⁾
• Skyline Blue / Birch White Tank Panels¹⁴⁾
• Birch White / Black Tank Panels¹⁵⁾
• Black / Pepper Red Tank Panels¹⁶⁾

1957 Parts Manual¹⁷⁾

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