Suzuki XN85

Suzuki XN85
Manufacturer Suzuki
Parent company Suzuki
Production 1983
Predecessor none
Successor GS750ES
Class Sport bike
Engine 673 cc (41.1 cu in), 4-stroke, transverse 4-cylinder, air/oil-cooled, DOHC, 2-valve-per-cylinder, IHI turbocharger
Bore / stroke 62 mm × 55.8 mm (2.44 in × 2.20 in)
Power 85 hp (63.4kW) @ 8500 rpm
Torque 56.4 ft-lb @ 6,500 rpm
Ignition type Electronic
Transmission 5-speed
Frame type steel
Suspension Front - 37 mm telescopic forks with antidive units, 150 mm (5.9 in) travel
Rear - Suzuki Full Floater with Kayaba Damper aluminum swingarm, 105 mm (4.1 in) travel
Brakes 260 mm (10 in) dual disc (front)
275 mm (10.8 in) single disc (rear)
Tires tube-type rims
110/90H16 MichelinA48 (front)
130/90H17 MichelinM48 (rear)
Wheelbase 1,490 mm (59 in)
Dimensions L: 2,160 mm (85 in)
W: 750 mm (30 in)
Seat height 762 mm (30.0 in)
Weight 218 kg (481 lb) (dry)
250 kg (550 lb) (wet)
Fuel capacity 20 L (4.4 imp gal; 5.3 US gal)
Related none

The Suzuki XN85, released in early 1983, was a turbocharged motorcycle. It was designed as a sportbike. The name came from the fact that it produced 85 hp. It featured the first factory 16-inch front wheel, which was previously seen only on race bikes. It also had low clip-on handlebars, rearset foot pegs and a single shock rear suspension, called the Suzuki Full Floater.

The engine was rather tame, with boost kicking in around the 5,000 rpm mark. The fuel-injected motor pulled strongly from that point but did not match the performance of larger sportbikes. The engine used an oil-jet forcible cooling system to sprayed oil on the pistons to improve engine cooling. Later iterations of this cooling system became the Suzuki Advanced Cooling System. While the XN did not have the power of other sportbikes, due to frame and suspension geometry, it had notably better handling than similar powered machines.

The XN85 was replaced shortly after its release by the lighter and cheaper GS750ES.

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