| MODEL | HARLEY-DAVIDSON SPORTSTER 1200 XLH 1988 - 1990 |
| Year | 1988 - 1990 |
| Engine Type | Four stroke, 45° V-twin, OHV, 2 valves per cylinder (Evolution) |
| Displacement / Capacity | 1199 cc / 73.2 cu in |
| Bore X Stroke | 88.8 x 96.8 mm |
| Compression Ratio | 9.0:1 |
| Cooling System | Air cooled |
| Max Power | 37.5 kW / 50.4 hp @ 6000 rpm |
| Max Torque | 84 Nm / 62 lb-ft @ 3500 rpm |
| Ignition | Digital CDI |
| Induction | Single 40 mm Keihin CV carburettor |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 4 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel double cradle, box-section steel swingarm |
| Front Suspension | 39 mm telescopic fork, 175 mm / 6.9 in wheel travel |
| Rear Suspension | Dual shocks, preload adjustable, 91 mm / 3.6 in wheel travel |
| Front Brakes | Single 292 mm disc, 2-piston caliper |
| Rear Brakes | Single 292 mm disc, 1-piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 226 kg / 498 lbs |
| WHEEL SPECS | |
| Front Tyre | 100/90-19 |
| Rear Tyre | 130/90-16 |
| FUEL SYSTEM | |
| Fuel Capacity | 7 Litres / 1.8 US gal |
| Fuel Consumption | — |
| Top Speed | — |
For 1988 the Evolution Sportster's big-bore option grew from 1100 to 1200 cc, with a 40 mm CV carburettor and a 39 mm fork. The early 1200 kept the four-speed gearbox and chain final drive until the 1991 update.
