| MODEL | BSA Y13 750 1938 |
| Year | 1938 |
| Engine Type | Twin, four-stroke, OHV |
| Displacement / Capacity | 748 cc / 45.64 cu in |
| Bore X Stroke | 71.0 mm x 94.0 mm |
| Compression Ratio | — |
| Cooling System | Air |
| Max Power | 14.2 kW / 19.5 hp @ 4800 rpm |
| Max Torque | — |
| Ignition | Lucas |
| Induction | Amal Monobloc |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump |
| Gear Box | — |
| Clutch | Multiplate, dry |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Duplex cradle |
| Front Suspension | Quick adjustable shock-steering damper |
| Rear Suspension | None, rigid |
| Front Brakes | 70 mm / 2.8 in drum |
| Rear Brakes | 70 mm / 2.8 in drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1372 mm / 54.0 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 204.0 kg / 449.7 lb |
| WHEEL SPECS | |
| Front Tyre | 4.00-18 |
| Rear Tyre | 4.00-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 17.0 Litres / 4.49 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 1938 listing of the 750 cc Y13 twin, rigid-framed, with a steering damper on the front end and black and chrome finish with green tank panels.
