2011 Yamaha XT660R Specifications

Name: 2011 Yamaha XT660R
Brand: Yamaha

Enduro / Off-Road • Specs last verified 13 July 2026

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2011 Yamaha XT660R Overview

For 2011, Yamaha offers the XT660R as an enduro / off-road motorcycle with 659 cc/ 40.2 cu-in on tap. The 2011 Yamaha XT660R is built around a Four stroke, single cylinder, SOHC, 4 valve engine, a compression ratio of 10.0: 1. Out on the road, the XT660R delivers 33.8 kW @ 6000 rpm of peak power and 58.4 Nm @ 5250 rpm of torque. Flat out, it's quoted at 164.7 km/h. In everyday use, the 2011 XT660R tips the scales at 181 kg, carries a 15-litre fuel tank, offers a seat height of 865mm and spans a 1505 mm wheelbase. That's roughly 17.8 kg lighter than the average enduro / off-road motorcycle in our database. Every technical detail, from suspension travel to tyre sizes, is covered in the full 2011 Yamaha XT660R spec sheet below.

2011 XT660R - Pros & Cons

Strengths

Strong power output: Peak output on the XT660R is 33.8 kW @ 6000 rpm and 58.4 Nm @ 5250 rpm of torque - strong numbers for what it is.
Fuel injection: No choke, no jetting, no altitude compensation to think about - fuel injection just works across a wider range of conditions than carburetion.

Considerations

Tall seat height: A 865mm seat puts flat-footing out of reach for a lot of riders - sit on it in person before committing.
Chain final drive upkeep: A chain drivetrain is the most common setup in its class, but it's also the one that demands the most regular hands-on maintenance.

Wear Points & Servicing Notes

Cooling system servicing

With Liquid cooled, thermal management is largely automatic, but the coolant has a service life of its own - replace it on the manufacturer's interval to protect the water passages and thermostat.

Fuelling & injector care

Fuelling on the XT660R comes from fuel injection. Cold starts and throttle response stay consistent across altitude and temperature, the main practical edge over a carbureted equivalent.

Brake disc and pad wear

Single 298mm disc 2 piston caliper up front provides the primary stopping power; inspect disc thickness and pad wear at each tyre change to catch scoring before it becomes a rotor replacement.

Suspension condition on used examples

Suspension duties are handled by 43 mm Telescopic forks, up front and Oscillating arm standard Monocross. 200mm wheel travel at the rear. Weeping fork seals aren't a dealbreaker on a used bike, but they're a fair basis for negotiating price.

Final drive maintenance

Chain final drive on the XT660R means routine lubing and tension checks are part of ownership - skip them and sprocket wear accelerates noticeably.

Frame & chassis check

The Steel tubular diamond frame with dual tank rails chassis holds up well with normal use; on a used bike it's still worth checking the head-stock and swingarm pivot area for impact damage or corrosion.

XT660R - Buying & Maintenance Guide

What to check before buying

A pre-purchase check on the 2011 Yamaha XT660R should cover the same ground every time: service history, chain and sprocket condition, and any oil seepage around the casings. Start it from cold if you can - a well-kept XT660R settles to a smooth idle within seconds.

Oil and filter changes

Oil changes are the cheapest insurance you can buy for a XT660R's engine - keep to the manufacturer's interval rather than stretching it. Use the viscosity grade the manual specifies, not whatever's on sale.

Fuel system care

Injector systems like the XT660R's hold up well with basic care - decent fuel, an occasional cleaner additive, and draining old fuel before any layup longer than three months.

2011 Yamaha XT660R - Frequently Asked Questions

What engine does the 2011 Yamaha XT660R have?

The 2011 Yamaha XT660R uses a Four stroke, single cylinder, SOHC, 4 valve engine with 659 cc/ 40.2 cu-in of displacement. It is liquid cooled.

What is the top speed of the 2011 Yamaha XT660R?

The 2011 Yamaha XT660R has a factory-quoted top speed of 164.7 km/h. Real-world speeds vary depending on rider weight, conditions and state of tune.

How much does the 2011 Yamaha XT660R weigh?

The 2011 Yamaha XT660R weighs 181 kg. This is the manufacturer's wet figure.

How much power does the 2011 Yamaha XT660R make?

The 2011 Yamaha XT660R produces 33.8 kW @ 6000 rpm of power and 58.4 Nm @ 5250 rpm of torque. These are peak figures.

What is the fuel tank capacity of the 2011 Yamaha XT660R?

The 2011 Yamaha XT660R has a 15-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 250-300 km between stops.

Is the 2011 Yamaha XT660R suitable for shorter riders?

The 2011 Yamaha XT660R has a seat height of 865mm. This is towards the tall end of the spectrum and will require most riders under 175 cm to tiptoe at stops.

What brakes does the 2011 Yamaha XT660R have?

The 2011 Yamaha XT660R uses Single 298mm disc 2 piston caliper at the front and Single 245mm disc 1 piston caliper at the rear.

What tyre sizes does the 2011 Yamaha XT660R use?

The 2011 Yamaha XT660R runs 90/90- 21 front and 130/80-17 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What gearbox does the 2011 Yamaha XT660R have?

The 2011 Yamaha XT660R is fitted with a 5 Speed transmission.

Key Specifications

Engine

Four stroke, single cylinder, SOHC, 4 valve

Power

33.8 kW / 48 hp @ 6000 rpm

Torque

58.4 Nm / 5.7 kgf-m @ 5250 rpm

Top Speed

164.7 km/h / 102.3 mph

Weight

181 kg / 421 lbs

Fuel Capacity

15 Litres / 3.3 US gal

Full 2011 Yamaha XT660R Specifications

Year 2011

Make Model Yamaha XT660R

Seat Height 865mm / 34.1 in

Wheelbase 1505 mm / 59.3 in

Ground Clearance 210 mm / 8.3 in

Height 1230 mm / 48.4 in

Length 2240 mm / 88.1 in

Width 845 mm / 33.2 in

Dry Weight 172 kg / 379.2 lbs

Fuel Capacity 15 Litres / 3.3 US gal

Oil Capacity 2.9 Litres / 0.19 quarts

Wet Weight 181 kg / 421 lbs

Top Speed 164.7 km/h / 102.3 mph

Max Power 33.8 kW / 48 hp @ 6000 rpm

Max Torque 58.4 Nm / 5.7 kgf-m @ 5250 rpm

Standing Start ¼ Mile 14.2 sec

Displacement 659 cc/ 40.2 cu-in

Engine Detail Four stroke, single cylinder, SOHC, 4 valve

Bore x Stroke 100 x 84 mm

Compression Ratio 10.0: 1

Cooling System Liquid cooled

Fuel Consumption 23 km/lit

Fuel Induction Fuel injection, 44 mm throttle body

Ignition TCI

Lubrication Dry sump

Starter Electric

Clutch Wet, multiple-disc coil spring

Final Drive Chain

Transmission / Drive 5 Speed

Frame Type Steel tubular diamond frame with dual tank rails

Suspension - Front 43 mm Telescopic forks,

Suspension - Rear Oscillating arm standard Monocross. 200mm wheel travel

Rake 27.0°

Trail 107 mm / 4.2 in

Wheel Travel - Front 225 mm / 8.8 in

Wheel Travel - Rear 200 mm / 7.9 in

Brakes - Front Single 298mm disc 2 piston caliper

Brakes - Rear Single 245mm disc 1 piston caliper

Tyres - Front 90/90- 21

Tyres - Rear 130/80-17

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.