| MODEL | HONDA SL 90 MOTOSPORT 90 1969 |
| Year | 1969 |
| Engine Type | Four stroke, single cylinder, OHC, 2 valves |
| Displacement / Capacity | 89 cc / 5.4 cu in |
| Bore X Stroke | — |
| Compression Ratio | 9.0:1 |
| Cooling System | Air cooled |
| Max Power | — |
| Max Torque | — |
| Ignition | Points and condenser |
| Induction | Keihin carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 4 speed |
| Clutch | Wet plate, manual |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Full duplex cradle |
| Front Suspension | — |
| Rear Suspension | Dual shocks |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1257 mm / 49.5 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 100 kg / 220 lbs |
| WHEEL SPECS | |
| Front Tyre | 2.75-19 |
| Rear Tyre | 3.25-17 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
The SL90 Motosport 90 was Honda's small overhead-cam street/trail single for 1969, a one-year model before the SL100 arrived. It paired the 89 cc engine with a four-speed gearbox, a duplex cradle frame, a high front fender and a 19-inch front / 17-inch rear wheel set-up. Bikes came in red or blue with a silver tank stripe, chrome exhaust, silver frame and colour-matched steel fenders.
