Yamaha YX600 Radian
| Manufacturer | Yamaha Motor Company |
|---|---|
| Parent company | Yamaha |
| Production | 1986 — 1990 |
| Class | Naked bike (standard) |
| Engine | 598cc, air-cooled, DOHC, inline-4 |
| Top speed | 125 mph (201 km/h) |
| Power | 66 hp (49 kW)@ 9,500rpm (claimed) 56 hp (42 kW)@ 9,500rpm (rear wheel) |
| Torque | 38 lb⋅ft (52 N⋅m) @ 7,500 rpm (claimed) |
| Wheelbase | 54.7 in (1,390 mm) |
| Weight | 198 kg (436 lb) (wet) |
| Fuel capacity | 12 L; 2.7 imp gal (3.3 US gal) |
| Oil capacity | 2,200 ml (2.3 US qt) |
| Fuel consumption | 4.9 L/100 km; 58 mpg‑imp (48 mpg‑US) |
The YX600 Radian is a sport/touring motorcycle manufactured by the Yamaha Motor Company between the years of 1986–1990. Except for the suspension, the rest of the Radian was a parts-bin motorcycle and came equipped with a slightly detuned for mid and low-end torque version of air-cooled, inline-4 which came from the Yamaha XJ600 that was also along with the Radian used in the Yamaha FZ-600 Sport Motorcycle (precursor of Yamaha's FZR series of performance bikes), as well as smaller carburetors and frame from the 550 Maxim. Cycle World obtained for the Radian a 1/4 mi. time of 12.76 @ 103.8 mph (167.0 km/h) and 0 to 60 mph (0 to 97 km/h) acceleration at 3.8 seconds.