2021 Yamaha XS Eleven History And Specs
2021 Yamaha XS Eleven History And Specs

2021 Yamaha XS Eleven History And Specs

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2021 Yamaha XS Eleven History And Specs


2021 Yamaha XS Eleven History And Specs. The Yamaha XS Eleven motorcycle was produced by Yamaha from 1978 to 1981. Yamaha XS Eleven  It is a superbike powered by a 4-stroke, air-cooled DOHC four-cylinder engine mounted transversely in a duplex mount frame. At the time of its release in 1978 the Yamaha XS11 was the fastest production motorcycle in the world. This should be Eleven’s second bike hence the name Yamaha Eleven instead of 1100. It can reach a top speed of 134 mph (215 km/h). Maximum torque is 66.38ft/lbs (90.0 Nm) @ 6500 RPM. The claimed horsepower is 92.93 HP (69.3 KW) @ 8500 RPM.

There are three models: standard style yamaha XS Eleven, XS Eleven Factory custom special, and the XJ1100 Maxim. The standard model, first released in 1978, had a larger 5.4-gallon tank than the 4.5-gallon specialty tank (1979 and above), as well as larger rear tires and wider grip bars. It has a prominent “buckhorn” style handlebar and front axle, giving it a more cruiser-like appearance. In ’80 and ’81 Yamaha offered a “Midnight Special” version (across the XS line) with a black tank (with gold flakes) and gold trim/covers/side wheels.

Introduced in 1978, the Yamaha XS Eleven is the largest and most powerful production ever motorcycle in the world. To say that automotive shock made such a significant statement, the leading motorcycle journalist of the day expected 1000cc bikes to compete with the likes of Honda, Suzuki and Kawasaki. Yamaha also never tried to make a 4 cylinder bike, so the introduction of the 1101cc, air cooled, DOHC, inline 4 cylinder capable of 95 horsepower at the rear wheel put pressure on it and led to some very crowded order books in Europe, Australia and North America.

Shortly thereafter, the XS1100 was nicknamed “Eleven”. Some say it’s for a sub-12 quarter mile time, some say it refers to the Spinal Tap and others find it more logical that it’s just a reference to a displacement of one thousand eleven hundred cubic centimeters. I always suspected that to some extent, it was a combination of the three.

At a wet weight of 602 lbs (270+ kg), no one would accuse the Yamaha XS Eleven of being a heavy sport bike. Despite its weight, the XS Eleven runs like a clapper. It can manage 136 mph without breaking a sweat and is widely documented as capable of a quarter mile sub 12 in 100% stock trim, usually after being pushed onto a drag strip by its owner.

Yamaha Eleven would keep the XS1100 in production from 1978 until 1981 when it was replaced with the XJ1100 Maxim, although the model’s relatively short life had achieved considerable fame and remained popular more than 30 years later.

The pristine XS Eleven you see here is rather rare, having only 418 miles on the odometer due to being parked so long after it was purchased due to the poor health of the owner. Recently rediscovered and relocated, although really just needs a few new tires, a bit of carburetor attention and an oil change to keep it running like it’s still 1978.


Yamaha XS Eleven Mesin Engine

The engine is air cooled in four rows, four strokes. The 71.5mm x 68.6mm stroke results in a displacement of just 1101.0 cubic centimeters. Fuel is supplied via twin overhead cams (DOHC).


It comes with 3.50-19 front tires and 4.50-17 rear tires. Stopping is achieved via a dual disc at the front and a single disc at the rear. The front suspension is Telescopic Fork while the rear is equipped with Dual Shocks Swing Arm. The XS1100 is equipped with a 6.34 Gallon (24.00 Liter) fuel tank.


The XS Eleven debuted in 1978 as the largest capacity Japanese superbike currently in production. It features dual front disc brakes, rear disc brakes, axle drive and cast wheels. The “factory custom” styled XS Eleven Special was released along these sides in 1979. Both models were replaced by the 1982 Maxim XJ1100.

History of Yamaha XS Eleven

1977 – 1979 Yamaha XS 1100

The XS 1100 is Yamaha’s answer to the growing cult of Superbike in the ’70s. Honda restarted in 68, and arguably Kawasaki and Suzuki together discontinued it alternately over the next decade, with Yam adding a bit of spice during the latter part.

Yamaha XS Eleven Specifications

2021 Yamaha XS Eleven History And Specs
2021 Yamaha XS Eleven History And Specs
  • Engine – air-cooled four-stroke DOHC
  • Capacity – 1101cc
  • Hole/step – 71.5 x 68.6mm
  • Power – 95bhp @ 8000rpm
  • Torque – 66ft-lb @ 6500rpm
  • Carburetor – CV Mikuni 34mm
  • Transmission – 5 speed wet poroscope final drive
  • Frame – steel tube twin mount
  • 37mm adjustable telescopic fork preload suspension or springs on Twin rear shocks and adjustable for spring preload
  • Brakes – 2 x 300mm single piston floating caliper discs. 300mm disc single-piston floating-caliper
  • Wheels – 3.50 x 19, 4.50 x 17
  • Weight – 217kgs
  • K top speed –