Suzuki XN85

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Suzuki XN85
Suzuki XN85.JPG
Manufacturer Suzuki
Parent company Suzuki
Production 1983
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 kW) (claimed)[1]
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 (58.7 in)[2]
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)[2] (wet)
Fuel capacity 20 L (4.4 imp gal; 5.3 US gal)

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 reportedly produced 85 bhp. Actual bhp at the rear wheel proved to be in the low 70 range. It featured the first factory 16-inch front wheel (at least in the U.S.), which was previously seen only on race bikes. It also had low clip-on handlebars, rearset foot pegs, four-into-one exhaust, and a monoshock rear suspension, called the Suzuki Full Floater, the first to feature this, and EFI. Its styling was from the katana motorcycle.[3]


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 spray oil on the bottom of 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. Total XN85 production was 1,153 units from 1983 through 1985. 300 of those were exported to the U.S, where the bike was sold only in its initial year - 1983.

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

Motorcycle.Com stated many years latter "An epic failure, the Katana-styled bike was the most unreliable and poorly selling turbo bike from the Japanese manufacturers"

See also[edit]

References[edit]

  1. ^ "Top 10 forced induction production bikes". Visor Down. May 5, 2015. Retrieved June 24, 2017. 
  2. ^ a b Orton, Don (April 28, 2016). "Retrospective: 1983 Suzuki XN85 Turbo". Sport Rider. Retrieved June 24, 2017. 
  3. ^ Ware, Jeff (September 3, 2015). "1980s Turbo Bikes Shootout". Motorcycle.com. Retrieved June 24, 2017. 

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