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Ariel MK2 Square Four
1955Allround

Ariel MK2 Square Four

Key specifications

Engine
997 cc
Fuel type
petrol
Fuel capacity
6.1 L
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1955 Ariel MK2 Square Four: A Classic in Allround Performance The 1955 Ariel MK2 Square Four is a stunning embodiment of mid-20th century British engineering that still captivates motorcycle enthusiasts and collectors alike. Renowned for its unique design and robust performance, the MK2 Square Four sits confidently in the allround category, appealing to riders who crave versatility combined with classic aesthetics. Its striking presence on the road, paired with a rich history dating back to the 1930s, makes it a notable piece of motorcycling heritage that stands out among its contemporaries. Power and Performance: A Two-Wheeled Masterpiece Under the elegant exterior of the MK2 Square Four lies a powerful 997 cc single-cylinder, four-stroke engine, which delivers a performance that belies its vintage status. With a carburettor fuel system optimized for smooth throttle response, this motorcycle provides a satisfying and engaging ride, whether cruising along scenic back roads or navigating city streets. The chain final drive ensures efficient power transfer, allowing riders to experience the motorcycle’s torque and handling with precision. Riding the MK2 is an experience steeped in nostalgia, as its tubular single-loop frame offers stability and comfort, making it an ideal choice for both leisurely rides and spirited outings. Key Features and Technological Highlights The MK2 Square Four boasts several features that showcase the innovative design elements of its time. The classic tubular frame not only contributes to the motorcycle's striking profile but also enhances its rigidity and handling characteristics. Equipped with expanding drum brakes at both the front and rear, the bike offers reliable stopping power, characteristic of its era, ensuring a safe ride even under challenging conditions. With a generous fuel capacity of 23 liters (6.08 gallons), this motorcycle can cover considerable distances, making it a practical choice for long rides. The combination of these features results in a machine that is not only a joy to ride but also a testament to the engineering prowess of Ariel. **

Pros

    Cons

    • Iconic Design: Its unique square four engine layout and vintage styling make it a head-turner at any gathering or on the road.
    • Comfortable Ride: The tubular frame and ergonomic design provide a comfortable riding experience, ideal for long journeys.
    • Strong Community: As a classic motorcycle, it has a dedicated following, with parts and restoration support available for enthusiasts.
    • Limited Performance by Modern Standards: While it offers a nostalgic riding experience, its performance may not match the acceleration and handling capabilities of contemporary motorcycles.
    • Maintenance Requirements: The vintage components may require more frequent upkeep and specialized knowledge to maintain compared to modern bikes.
    • Weight: At a length of 2,100 mm (82.7 inches), the MK2 can feel heavy and less maneuverable, particularly for novice riders or those accustomed to lighter machines.

    Technical details

    Source specification data

    Make
    Ariel
    Model
    MK2 Square Four
    Category
    Allround
    Fuel System
    Carburettor
    Displacement
    997.00 ccm (60.84 cubic inches)
    Engine Details
    Single cylinder, four-stroke
    Transmission Type Final Drive
    Chain
    Fuel Capacity
    23.00 litres (6.08 gallons)
    Overall Length
    2,100 mm (82.7 inches)
    Seat
    Dual
    Wheels
    Spoked
    Rear Tyre
    4-18
    Frame Type
    Tubular single loop
    Front Tyre
    3.25-19
    Rear Brakes
    Expanding brake (drum brake)
    Front Brakes
    Expanding brake (drum brake)