Back to Bike FinderYears: 1929 · 1928 · 1927 · 1926 · 1925 · 1924 · 1923 · 1922 · 1921 · 1920 · 1919 · 1918 · 1917 · 1916 · 1915
Harley-Davidson Model J
1921Allround

Harley-Davidson Model J

Key specifications

Engine
989 cc
Weight
145 kg
Fuel type
petrol
Rear brakes
Expanding brake (drum brake)

Overview

### 1921 Harley-Davidson Model J: A Timeless Classic Step into the roaring '20s, an era defined by innovation and the spirit of freedom, and you'll find the 1921 Harley-Davidson Model J standing out as a quintessential motorcycle of its time. Positioned as an all-rounder, this motorcycle epitomizes the American dream of exploration on two wheels. With its robust build and classic design, the Model J was tailored for riders seeking both performance and style. Whether cruising the open road or navigating city streets, the Model J offered an unmatched combination of utility and charm that appealed to a wide range of motorcycling enthusiasts. At the heart of the Model J is its powerful V2 four-stroke engine, boasting a displacement of 989 cc (60.35 cubic inches). With a bore and stroke of 84.1 x 88.9 mm, this classic powerhouse delivers a top speed of 136.8 km/h (85.0 mph), making it a formidable contender in the early motorcycle market. The engine's design, paired with a reliable carburettor fuel system and H.D. generator ignition, ensures a responsive and exhilarating ride. Riders can expect a smooth power delivery that complements the Model J's sturdy frame, allowing for confident handling on various terrains. The chain final drive adds to the simplicity and reliability, making it a favorite for both casual riders and dedicated enthusiasts. The 1921 Model J is not just about raw power; it also showcases a delightful array of features that were ahead of its time. The expanding drum brake at the rear provides dependable stopping power, essential for safety on the open road. With a weight of 145 kg (319.7 pounds), the Model J strikes a balance between stability and maneuverability, allowing riders to navigate with ease. Its classic aesthetic, characterized by bold lines and vintage styling, evokes nostalgia while making a statement wherever it goes. The Model J is more than just a motorcycle; it’s a symbol of the freedom and adventure that the Harley-Davidson brand stands for. **

Pros

  • Powerful Engine: The V2, four-stroke engine delivers robust performance, allowing for an impressive top speed of 85 mph.
  • Classic Design: Timeless aesthetics that reflect the heritage of Harley-Davidson, appealing to vintage motorcycle enthusiasts.
  • Reliable Handling: The combination of a sturdy frame and expanding drum brakes offers confident handling and safety.

Cons

  • Weight: At 145 kg, it may feel heavy for some riders, especially in tight maneuvers or while parking.
  • Limited Technology: Lacks modern amenities such as electric start and advanced suspension systems, which may deter some contemporary riders.
  • Fuel Efficiency: The carburettor may not provide the same fuel efficiency seen in modern motorcycles, leading to more frequent stops at the pump.

Technical details

Source specification data

Make
Harley-Davidson
Model
Model J
Category
Allround
Ignition
H.D generator
Top Speed
136.8 km/h (85.0 mph)
Fuel System
Carburettor
Bore X Stroke
84.1 x 88.9 mm (3.3 x 3.5 inches)
Displacement
989.00 ccm (60.35 cubic inches)
Engine Details
V2, four-stroke
Transmission Type Final Drive
Chain
Dry Weight
145.0 kg (319.7 pounds)
Seat
Single
Wheels
Spoked
Rear Tyre
3-28
Front Tyre
3-28
Rear Brakes
Expanding brake (drum brake)