Honda XR series
Encyclopedia
The Honda XR series motorcycles are a range of single-cylinder four-stroke
Four-stroke cycle
A four-stroke engine, also known as four-cycle, is an internal combustion engine in which the piston completes four separate strokes—intake, compression, power, and exhaust—during two separate revolutions of the engine's crankshaft, and one single thermodynamic cycle.There are two...

 off-road motorcycles that were designed in Japan and assembled all over the world. The series is gradually being replaced by the similar CRF series
Honda CRF series
The Honda CRF series is a line of four-stroke motocross and trail motorcycles manufactured and marketed by Honda.The CRF line was launched in 2002 as a successor to the Honda XR series. The full sized motocross bikes are equipped with liquid-cooled, single-cylinder four-stroke engines that are...

. Some of the XR series came in two versions, R and L. The R version bikes were designed for off-road riding; they had very few creature comforts, and tended to come standard with knobby off-road tires fitted. The R version bikes, without modification, generally were not street legal
Street legal
Street legal or road legal refers to a vehicle such as an automobile, motorcycle, or light truck that is equipped and licensed for use on public roads...

. The L version bikes were designed to be street legal dual sport models, with appropriate lighting, tires and other features needed to ride on public roads.

In its heyday, the XR series consisted of 10 models; however, currently only the dual-sport XR 650L
Honda XR650L
The XR650L is a street legal Honda dual-sport motorcycle, and is part of the Honda XR series. It was released in 1992 as a 1993 model. It combines the RFVC engine from the proven NX650 Dominator dual sport with the lighter, off-road capable XR600R chassis, which is not road legal in the US. It has...

 remains. The rest of the XR line has been transitioned into the CRF line, however the 50, 70, and 80 pretty much remain unchanged from their XR heritage.

Small XR models

The bikes that fall under this category are physically smaller than any of the other bikes in the series. They are predominantly designed for children, or as pit bikes, for recreational fun, nothing more. For an adult rider, they would not be comfortable for a ride of any length.

XR 50R

The XR 50 is a small 4-stroke 50 cc child's entry level motorcycle.
produced from 1968 until today originally called the Trail 50, then Z-50, the XR 50, CRF 50, and now a street legal (mini motard) version called the XR 50. This model is currently not sold in the United States due to the CPSIA
Consumer Product Safety Improvement Act
The Consumer Product Safety Improvement Act of 2008 is a United States law signed on August 14, 2008 by President George W. Bush. The legislative bill was known as HR 4040, sponsored by Congressman Bobby Rush . On December 19, 2007, the U.S. House approved the bill 407-0. On March 6, 2008, the U.S....

.

XR 70R

Engine:

Engine: 72 cc, air-cooled, single-cylinder, four-stroke, SOHC, two-valve

Displacement: 72 cc. Bore x Stroke: 47 mm X 41.4 mm. Compression Ratio: 9.0:1

Carburetion: 13 mm piston-valve. Ignition: CDI.

Dimensions:

Weight: 125.7 lbs. Ground Clearance: 6.5 in. Wheelbase: 41.5 in.

Fuel Capacity: 1.6 gal., including 0.2 gal. Reserve

Seat Height: 25.5 in.

Drive Train:

Transmission: 3-speed with automatic clutch. Final Drive: #420 chain

Suspension:

Front: 27 mm Telescopic fork, 3.9" of travel

Rear: Single shock, 3.7" of travel

Brakes/Wheels/Tires:

Brakes: Front: Drum. Rear: Drum

Tires: Front: 2.50 X 14. Rear: 3.00 X 12

XR 75R

Engine:

Engine: 75 cc, air-cooled, single-cylinder, four-stroke, SOHC, two-valve

Displacement: 75 cc

Carburetion: 20 mm Keihin

Dimensions:

Weight: Approx 140 pounds. Ground Clearance:: 6.8 Wheelbase:: Information Unavailable

Fuel Capacity: 1.6 gal

Seat Height:: Information Unavailable

Drive Train:

Transmission: 4-speed Manual clutch. Final Drive: Chain

Suspension: Information Unavailable

Brakes/Wheels/Tires:

Brakes: Front: Drum. Rear: Drum.

Tires: Front: 2.5-16 Rear 110/80-14

XR 80R

Engine:

Engine: 79 cc, air-cooled, single-cylinder, four-stroke, SOHC, two-valve

Displacement: 80 cc. Bore x Stroke: 47.5 mm X 45 mm. Compression Ratio: 9.7:1

Carburetion: 18 mm piston-valve. Ignition: CDI.

Dimensions:

Weight: 141.1 lbs. Ground Clearance: 8.3 in. Wheelbase: 47.0 in.

Fuel Capacity: 1.6 gal., including 0.2 gal. Reserve

Seat Height: 28.5 in.

Drive Train:

Transmission: 5-speed. Final Drive: #420 chain, 14T/46T

Suspension:

Front: 27 mm leading axle Showa fork, 5.0" of travel

Rear: Pro-Link single shock, 4.3" of travel

Brakes/Wheels/Tires:

Brakes: Front: Drum. Rear: Drum

Tires: Front: 2.50 X 16. Rear: 3.60 X 14
This modell were only made in china

XR 100R

Engine:

Engine: 99 cc, air-cooled, single-cylinder, four-stroke, SOHC, two-valve

Displacement: 99 cc. Bore x Stroke: 53 mm X 45 mm. Compression Ratio: 9.4:1

Carburetion: 20 mm piston-valve. Ignition: CDI.

Dimensions:

Weight: 149.9 lbs. Ground Clearance: 10.4 in. Wheelbase: 49.4 in.

Fuel Capacity: 1.6 gal., including 0.2 gal. Reserve

Seat Height: 30.3 in.

Drive Train:

Transmission: 5-speed. Final Drive: #428 chain, 14T/50T

Suspension:

Front: 27 mm leading axle Showa fork, 5.0" of travel

Rear: Pro-Link single shock with spring pre-load adj., 4.7" of travel

Brakes/Wheels/Tires:

Brakes: Front: Drum. Rear: Drum

Tires: Front: 2.50-19. Rear: 3.00-16

XR 125L

The XR 125L was released the year 2004 and was discontinued in 2009, manufactured in just three colors, red, black and white the most common of these colours being red.




The 125 is a popular learner bike for many due to its highly forgiving handling, long-travel suspension for absorbing otherwise dangerous bumps, excellent fuel consumption
Fuel efficiency
Fuel efficiency is a form of thermal efficiency, meaning the efficiency of a process that converts chemical potential energy contained in a carrier fuel into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per application, and this spectrum of variance is...

 (80-90mpg) and highly reliable four-stroke 124 cc engine. While not a particularly powerful 125 cc bike, generating 11.13 HP (8.1 kW) at 8500 RPM, and a top speed of around 65 mph, the engine is generally regarded as being, with adequate maintenance, all but bullet-proof when it comes to reliability. The XR 125L doesn't feature a kick start
Kick start
Kick start refers to a method of starting an internal combustion engine by pushing a ratcheting lever with one's foot. Kick start mechanisms were almost universally a part of motorcycle engines before the mid-1970s, and were phased out of production over the next twenty years or so as electric...

, but its dependable electric start
Automobile self starter
A starter motor is an electric motor for rotating an internal-combustion engine so as to initiate the engine's operation under its own power.- History :...

 and ease with which this bike can be bump-started
Push start
Push starting, also known as bump starting, pop starting or crash starting is a method of starting a motor vehicle with an internal combustion engine by engaging the manual transmission through the motion of the vehicle...

 negates the need for one.

Tires on this bike are generally dual-sport as standard, being grippy enough for road riding, but having a deeper tread than usual to allow for a little off-road riding without submitting to the on-road handling problems associated with full off-road knobbly tires.

Engine

Displacement : 124.0 cc .

Power : / RPM 8.3 KW / 8500 min-1 (95/1/EC)

Engine Type: OHV 4-stroke

Cylinders : 1

Diam x stroke: 56.5 x 49.5 mm

Compression: 9.5:1

Cooling : Air

Starting: Electric

Battery capacity: 12 V / 4 AH

Starter Power: 155 W

Clutch : multi-disc oil bath springs

Activation of the clutch : mechanical, cable

Horse Power : 11 hp



General Information

Length: 2060.00 mm

Wheelbase: 1350.00 mm.

Overall Width: 810.00 mm

Seat Height: 820.42 mm.

Empty (dry) weight: 115.50 kg

Tank capacity: 12.00 liters (including 4.1 liters reserve)




Structure of the bike

Chassis : Semi-double cradle

Material: Steel

Suspension Front: Fork Telescopic

Suspension Rear: Monoshock damper

Brake front: hydraulic disc - Diameter : 240.00 mm.

Drive: Double gripper pads and resin piston

Brake Rear: Drum - Diameter: 110.00 mm.

Tire Front: 90/90-19

Tire rear: 110/90-17

XR 200R

A very popular trail bike because of its incredible performance at high altitude and very difficult trails. The XR200 is considerably lighter than the XR250 thus making it handle much better. The soft suspension makes it very comfortable for long travel or rough terrain. The XR200 stopped production in 2002. Pre 1993 models were built for more performance suspension wise. The 1984 and 1985 model years had RFVC 4-valve motors but had overheating problems due to lack of an oil cooler, most 84s and 85s motors have not survived.

XR 250R

For many years, the XR 250R was the standard small-bore off-road four-stroke. It had a 249 cc air-cooled motor with Honda's famous Radial Four Valve Combustion Chamber (RFVC). In 1996, the bike was entirel|kW|0|abbr=on}} at 8100 rpm. Though the bike was new, it kept the antiquated air-cooling and conventional suspension fork. The XR 250R was the king of entry level off road four strokes. It was simple, indestructible, and reliable. This bike was discontinued in 2004, replaced by the more modern CRF250X.

XR 250L

This is the street legal version of the XR250R. The primary differences between the two include on-road lighting (head, tail, brake, and turn indicators), D.O.T. (road legal) tires, metal fuel tank, keyed ignition/steering lock, and many other small changes to make it more suitable for road use. This comes at the expense of off road ability, and added weight (about 40 lbs). It also used a different carburetor and the exhaust headers were 3 mm smaller than the R's to meet emissions requirements. It had a 249 cc air-cooled motor with Honda's famous Radial Four Valve Combustion Chamber (RFVC). In 1996, the entire bike was updated. The updated engine put out a usable 19 hp at 8100 rpm. Though the bike was new, it kept the antiquated air-cooling and conventional suspension fork. This motorcycle was discontinued in 2004.

1984 Specs

Engine
Cooling: Air-cooling
Cylinder: Single-cylinder SOHC, 4-valve
Capacity: 339ml. Bore x Stroke 84 x 61.3 mm.
Compression Ratio: 9.5:1
Induction: 2x 26 mm Keihin
Ignition/Starting: CDI/electric
Max Power: 22.4 hp (16.7 kW) @ 7500 rpm.
Max Torque: 19 lbft

Transmission/Drive:
5 Speed/chain

Suspension:
Front Suspension: 41 mm Air adjustable forks, 280 mm wheel travel.
Rear Suspension: Single gas shocks, fully adjustable, 290 mm wheel travel.

Brakes/Wheels/Tires:
Front Brakes: Single Disc
Rear Brakes: Drum
Front Tire: 90/90 -21
Rear Tire: 130/80 -17

Dimensions:
Dry-Weight: 121 kg
Fuel Capacity: 9 Liters

XR 400R

Introduced in 1996, the XR 400R was wildly popular. It was reasonably light (264 pounds) and made a pleasant 32 hp at 7600 rpm. It shared a frame, plastic and suspension components with the XR 250R, and had a similar air-cooled engine with RFVC technology. XR 400's were heavily modified and raced. In 1998, however, Yamaha eclipsed the XR 400R with its answer to the mid-size off-road four-stroke: the WR 400F. The WRF was much more advanced in technology than the XR. In 2004, Honda replaced the XR 400 with the CRF 450X.

Specs

Engine and Transmission:

Displacement: 397.00 ccm (24.22 cubic inches)

Power: 32.00 HP (23.5 kW)

Engine type: Single-cylinder, fourstroke

Compression: 9.3:1

Bore x stroke: 85.0 x 70.0 mm (3.3 x 2.8 inches)

Fuel system: Carburetor

Fuel control: SOHC 4v

Gearbox: 5-speed

Starter: Kick

Cooling system: Air

Chassis:

Frame type: Steel

Front suspension travel: 279 mm (11.0 inches)

Rear suspension travel: 300 mm (11.8 inches)

Front brakes: Single disc

Rear brakes: Single disc

Physical measures and capacities:

Dry Weight: 257.1 lbs (116.6 kg)

Seat height: 930 mm (36.6 inches) If adjustable, lowest setting.

Ground clearance: 310 mm (12.2 inches)

Wheelbase: 1,425 mm (56.1 inches)

Fuel capacity: 11.40 litres (3.01 gallons)

Reserve fuel capacity: 1.80 litres (0.48 gallons)

XR 500R

Early twin shock model. Followed by a monoshock four-valve XR 500. In 1983 motor was upgraded to RFVC technology with full cradle frame to suit. This won the Baja race and was quickly revised to 600 cc (see XR 600R). -Produced from 1979 through 1985

Specs

Engine and Transmission:

Displacement: 500.00 ccm (30.51 cubic inches)

Engine type: Single-cylinder. Stroke: 4

Power: 37.00 HP (27.5 kW))

Fuel system: Carburetor (dual)

Fuel control: OHC

Starter: Kick

Cooling system: Air

Frame type: Steel

Top speed: 150.0 km/h (100.7 mph)

Weight: 238.33 lbs

XR 600R

The XR 600R was king of the Baja
Baja
-Geography:* Baja California peninsula, a peninsula in North America* States of Mexico** Baja California** Baja California Sur* Baja Arizona* Baja, Hungary* Baja Verapaz, a department of Guatemala...

 races. It was introduced in 1985, and was updated again in 1992. The XR won many desert races in the hands of Johnny Campbell and Scott Summers. Its air-cooled engine was very similar to the XR 400 and XR 250 engines, with the same RFVC valve train. The XR 600 only made 38 hp at its peak, but its torque was 32 ft·lb (43.4 N·m). In 2000, Honda replaced this desert warrior with the XR 650R. XR 600's were even raced in the GNCC's by Scott Summers

XR 650R

Introduced in 2000, the XR 650R was not just an update to the XR 600—it was a totally new bike. An all-new 649 cc, liquid-cooled, SOHC engine was mated to an aluminum box frame. The large XR did carry substantial girth, however, at 280 pounds (127 kg) dry.

The XR 650R is an incredible desert racer. It has won every professional desert race its entered. It remains one of the few stock dirt bikes that can touch 100 mi/h. The stock Australian geared bike can reach 180 km/h.

The 649 cc SOHC motor of the XR pumps out an incredible amount of usable power. The stock unit turns 20.6 hp right off idle and maxes at 45.2 hp once the motor reached 6600 rpm. The power is spread evenly across the powerband without any major glitches or hiccups, although power does tail off well before it hits the 8400 rpm rev limiter. Many riders agree on the user-friendliness of the big 4-stroke and few are displeased with the performance of the engine.

XR 650L

The Honda XR650L
Honda XR650L
The XR650L is a street legal Honda dual-sport motorcycle, and is part of the Honda XR series. It was released in 1992 as a 1993 model. It combines the RFVC engine from the proven NX650 Dominator dual sport with the lighter, off-road capable XR600R chassis, which is not road legal in the US. It has...

is a street/trail bike that is more similar to the XR 600R than the XR 650R. It has a steel tube frame as opposed to an aluminum spar frame like in the XR 650R. It also has an air-cooled 644 cc SOHC dry-sump single-cylinder 4-stroke engine similar except for an increased displacement to the XR 600R, unlike the totally redesigned XR 650R that has a liquid-cooled 649 cc SOHC dry-sump single-cylinder 4-stroke engine. With a headlight, taillight, turn signals, mirrors, smog system, revised exhaust system and a 2.8 gallon gas tank with 0.6 gal reserve, the 650L has a 349 lb (158.3 kg) wet weight.

External links

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