Back to Bike FinderYears: 1938 · 1937 · 1936
BSA Y13
1937Off-road

BSA Y13

Key specifications

Engine
748 cc
Power
20 HP
Fuel type
petrol
Fuel capacity
4.5 L
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1937 BSA Y13: A Classic Trailblazer in Cross-Motocross The 1937 BSA Y13 stands as a testament to the British motorcycle heritage, embodying the spirit of adventure and rugged endurance that defined the cross-motocross category of its time. Designed for both the off-road enthusiast and the casual rider, this motorcycle was positioned to appeal to those who craved versatility and reliability. With its elegant lines and striking color options of black paired with chrome-green tank panels, the Y13 is not just a machine; it’s a piece of art on two wheels that harkens back to a golden era of motorcycling. At the heart of the BSA Y13 is its robust 748cc twin-cylinder, four-stroke engine, delivering a respectable 19.5 horsepower at 4800 RPM. This power output, while modest by today’s standards, provides an engaging and spirited riding experience that perfectly suits the bike’s intended purpose. The engine is paired with a traditional chain final drive and a multiplate dry clutch, allowing for smooth gear changes and a direct connection to the road (or trail). Riders will appreciate the nimble handling and responsiveness offered by the quick-adjustable shock-steering damper, which helps maintain stability whether navigating rocky paths or winding country roads. The design of the BSA Y13 emphasizes both functionality and innovation. Its duplex cradle frame ensures a sturdy yet lightweight construction, allowing for confident maneuverability. The drum brakes, both front and rear, measure 7 inches in diameter and provide reliable stopping power, critical for those unexpected moments on rough terrain. With a fuel capacity of 17 liters, this motorcycle is ready for extended journeys, while the air-cooling system keeps the engine running efficiently across diverse riding conditions. The absence of rear suspension may seem antiquated now, but it was a hallmark of the design philosophy of the era, emphasizing simplicity and ruggedness. **

Pros

  • Heritage Design: Classic styling with historical significance appeals to vintage motorcycle enthusiasts.
  • Robust Engine Performance: The twin-cylinder engine delivers a satisfying mix of power and reliability for cross-motocross riding.
  • Versatile Riding Experience: Capable of handling diverse terrains, making it ideal for adventure enthusiasts.

Cons

  • Limited Suspension Features: The non-rigid rear suspension may lead to a less comfortable ride on rough trails compared to modern bikes.
  • Modest Power Output: At 19.5 HP, it may not satisfy riders seeking high-performance thrills.
  • Drum Brakes: While reliable for their time, drum brakes can lack the stopping power and responsiveness of contemporary disc brakes.

Technical details

Source specification data

Make
BSA
Model
Y13
Category
Cross-motocross
Color Options
Black and chrome-green tank panels
Power
19.50 HP (14.2 kW)) @ 4800 RPM
Clutch
Multiplate dry
Ignition
Lucas
Fuel System
Carburettor. Amal monoblock
Bore X Stroke
71.0 x 94.0 mm (2.8 x 3.7 inches)
Displacement
748.00 ccm (45.64 cubic inches)
Cooling System
Air
Engine Details
Twin, four-stroke
Lubrication System
Dry sump
Transmission Type Final Drive
Chain
Fuel Capacity
17.00 litres (4.49 gallons)
Weight Incl Oil Gas Etc
204.0 kg (449.7 pounds)
Seat
Single seat
Rear Tyre
4.00-18
Frame Type
Duplex cradle
Front Tyre
4.00-18
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake)
Rear Suspension
None-rigid
Front Suspension
Quick adjustable shock-streering damper
Rear Brakes Diameter
7 mm (0.3 inches)
Front Brakes Diameter
7 mm (0.3 inches)

Available colors

Black and chrome-green tank panels