✦ published
Ariel 4G Square Four Mark II
1959 · Vintage
1959 · Vintage
The 1959 Ariel 4G Square Four Mark II represents the final evolution of a truly distinctive British motorcycle. As a vintage machine from the venerable Ariel marque, the Mark II built upon a lineage that began in the 1930s, offering a unique take on four-cylinder power. In its era, it competed directly with other large-capacity touring and sport-touring motorcycles like the Vincent Black Shadow and the Brough Superior SS100, though with a decidedly different engine configuration.
At the heart of the 1959 Ariel 4G Square Four Mark II was its remarkable 995.00 ccm (60.71 cubic inches) engine. This double twin cylinder, arranged as a square, was an engineering marvel for its time. It produced a respectable 45.00 HP (32.8 kW) at 5500 RPM, translating into a top speed of 160.0 km/h (99.4 mph). Fuel capacity was a generous 18.93 litres (5.00 gallons), allowing for extended touring without frequent stops. This specific engine architecture provided a distinctive power delivery, characterized by smooth, ample torque across the rev range, rather than an aggressive, high-revving nature.
Riding the Ariel 4G Square Four Mark II offered a refined experience for its time. As a vintage motorcycle, its ergonomics were typical of the era, providing a comfortable, somewhat upright stance suitable for longer journeys. The smooth power delivery from the square-four engine minimized vibration, contributing to rider comfort. While not a lightweight machine, its handling was predictable and stable, making it a capable tourer for its category. The robust frame and suspension components were designed to handle the stresses of touring and provide a compliant ride.
The Ariel 4G Square Four Mark II was aimed at the discerning rider who appreciated engineering innovation and a distinctive riding experience. It appealed to those seeking a powerful, smooth, and relatively sophisticated motorcycle for touring or spirited weekend rides. Its unique engine configuration and classic British styling made it a standout. Today, it remains a highly sought-after vintage motorcycle, admired by collectors and enthusiasts for its historical significance and unique mechanical design. It is a testament to Ariel's willingness to pursue unconventional engineering solutions.
✅ Why buy this bike?
The Ariel 4G Square Four Mark II 1959 motorcycle features a unique and innovative square four engine design, providing a smooth and powerful performance.Its vintage and classic styling appeals to motorcycle enthusiasts and collectors, making it a sought-after bike for those who appreciate retro aesthetics.The Ariel 4G Square Four Mark II 1959 is known for its reliability and durability, with many still in running condition today, showcasing its robust build quality.The handling and ride quality of this motorcycle are praised for its balanced and comfortable nature, making it a joy to ride on both city streets and open roads.The historical significance of the Ariel 4G Square Four Mark II 1959 adds to its appeal, as it represents a milestone in motorcycle engineering and design from that era.⚠️ Things to consider
Limited availability of spare parts due to the vintage nature of the motorcycle.Relatively high maintenance costs compared to modern motorcycles.Complex engine design may require specialized knowledge for repairs and maintenance.Potentially lower fuel efficiency and performance compared to contemporary motorcycles.Limited aftermarket support for customization and upgrades.⚖️ Comparison & Competition
Vincent Black Shadow: A classic British motorcycle known for its powerful V-twin engine and iconic design, offering a similar vintage appeal as the Ariel 4G Square Four Mark II.BSA Rocket 3: A high-performance triple-cylinder motorcycle from the 1960s, featuring a unique engine configuration and excellent handling characteristics comparable to the Ariel Square Four.Norton Commando: An iconic British motorcycle renowned for its smooth parallel-twin engine and innovative isolastic frame design, providing a blend of performance and comfort similar to the Ariel 4G Square Four.Triumph Bonneville: A timeless classic from the British manufacturer Triumph, known for its parallel-twin engine, elegant styling, and versatile riding capabilities that appeal to riders seeking a vintage-inspired motorcycle experience.Moto Guzzi V7: A modern interpretation of a classic Italian motorcycle, the Moto Guzzi V7 combines retro styling with modern technology, offering a unique alternative to the vintage charm of the Ariel 4G Square Four Mark IIThe Ariel 4G Square Four Mark II produces 45 HP, fitting A2 license limits (max 35 kW / 47 HP). For riders 18+.
Estimated average for 995cc class: 35-50 mpg (5.0-7.0 L/100km)
⛽ Tank: 18.93 litres (5.00 gallons)
Insurance grouping for Ariel 4G Square Four Mark II (995cc):
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