There was no frame identification for purpose of ownership on 1957-1969 model Sportsters.
However, there were stampings on the different parts of the frame combined with certain features that can be used to date the frame.
Click Here to view Ironhead Frame Identification in the Sportsterpedia.

The only numbers for the purpose of identification were on the engine case.

• The engine serial number is stamped on the left side of the engine case between the two cylinders.
  The first 5 or 6 digits represent the year and model ¹⁾
  From 1962-1969, models with 4 digit production (serial) numbers have an even-numbered first digit for even years and odd numbered first digit for odd years.
  

Click Here for more information on serial numbers and VINs in the Sportsterpedia.

The following illustrations are displayed for historic and period specific parts identification only. Refer to the original OEM documents for additional information. ²⁾
Click on any illustration below to enlarge.

• Engine type: 4 cycle Overhead Valves, 45 degree V2 ³⁾
• Displacement: 54 ci / 883 cc
• Hemi-spherical style heads
• Bore: 3 in / 7.62 cm ⁴⁾
• Stroke: 3.8125 in / 9.68 cm ⁵⁾
• 90 Degree Valve Angle
• Horsepower: 42 @ 5,500rpm (XL) ⁶⁾

⁷⁾

• Fuel capacity: 4 gal / 15.14 l (XLCH 2.2 gal / 8.328 l)⁸⁾
• Oil Capacity: 3 qts. / 2.83 l ⁹⁾
• Transmission Capacity: 1.5 pints / .71 l ¹⁰⁾
• MPG: 50mpg (est.)

• Weight: 495 lb / 225 kg

¹¹⁾

• Constant Mesh - Foot shift
• Speeds - 4 Forward
• Number of Sprocket Teeth
  • Engine: 34
  • Clutch: 59
  • Transmission: 21 (XLCH 20)
  • Rear Wheel: 51
• Gear Ratios (XL,XLH)
  • 1st: 10.63 to 1
  • 2nd: 7.69 to 1
  • 3rd: 5.82 to 1
  • 4th: 4.21 to 1
• Gear Ratios (XLCH)
  • 1st: 11.16:1
  • 2nd: 8.08:1
  • 3rd: 6.11:1
  • 4th: 4.42:1

• Tire pressure
  • Front: 14 psi / .96 bar
  • Rear: 18 psi / 1.24 bar

¹²⁾

What is the Current KBB Value? ¹³⁾

What is the Current KBB Value? ¹⁴⁾

1964 XLCH 15)

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