XR650R SPECIFICATIONS

Engine Type

649cc liquid-cooled dry-sump single-cylinder

Bore and Stroke

100mm x 82.6mm

Compression Ratio

10.0:1

Valve Train

SOHC; four valve

Carburetion

Keihin 40mm piston-valve

Ignition

Solid-state CD with electronic advance

Transmission

Five-speed

Final Drive

#520 0-ring-sealed endless chain; 14T/48T

Suspension

Front: 46mm leading-axle Kayaba cartridge fork

with compression and rebound damping 

adjustability; 11.2 inches travel

Suspension . Rear

Pro-Link Kayaba single shock with spring preload,

compression and rebound damping adjustability;

Brakes, Front

Single 240mm disc with twin-piston caliper

Brakes, Rear

Single 240mm disc with single-piston caliper

Tires, Front

80/100-21

Rear

110/100-18

Wheelbase

58.3 inches

Rake

(Caster Angle) 27.80

Trail

111mm (4.3 inches)

Seat Height

36.8 inches

Dry Weight

277 pounds

Fuel Capacity

2.6 gallons, including 0.5-gallon reserve

Color

Red

Price (MSRP)

$5,699

Availability

Feb-00

Optional Full-Power Parts

Muffler diffuser, carb manifold, carb jetting

California version differs slightly due to emissions equipment.

XR600R/XR650R COMPARISON

ITEM

XR600R

XR650R

NOTES

Cylinder

angle - 15 degrees

13 degrees

More vertical cylinder allows

space for radiators and hoses,

while maintaining front wheel

clearance.

Ignition

oil bath

dry

Reduced parasitic drag.

Larger main bearings with left

side seal keeps oil out of

Ignition cavity.

Clutch access

none

yes

Magnesium CR-type cover for

easier clutch access. Cover is

sealed with an 0-ring gasket.

Cylinder head

RFVC

4-valve

Liquid-cooled.

Intake valve

36 mm

37mm

Increased valve area.

Exhaust valve

31 mm

32mm

Increased valve area.

Valve cover

4

2

Less weight, easier valve

adjustment.

Bore&Stroke

97x80mm

100x82.6mm

XR650R piston is 10.6 grams

lighter.

Con rod

134mm

l40mm

Rod is carbon-nitride treated.

Intake valve lift

8.8mm

9.2mm

Increased valve lift.

Ex. valve lift

8.5 mm

9.2 mm

Increased valve lift.

Int. cam timing

open 5 degrees btdc

15 deg. btdc

XR650R cam uses one

closed 40 deg. abdc

45 deg.abdc

intake lobe to operate two

intake valves via a forked

rocker arm.

Ex. Cam timing

open 45 deg. btdc

45 deg. btdc

Two exhaust cam lobes

closed 5 deg. atdc

15 deg. Atdc

operate two exhaust

valves via rocker arms

Cam chain

118 links

122 links

New cam chain is stronger,

lighter and quieter.

Cam ch. Tensioner

1-way

XR 400R-type

ratchet-type

(spiral spring)

Carb diameter

38mm

40mm

Carb material

Zinc

Aluminum

First XR application.

Clutch geart teeth

70

71

Primary ratio

2.188

1.651

Clutch springs

4

5

Setting load: XR600R:120 kg

XR650R: 108 kg

Prim. drive gear

32 teeth

43 teeth

Main shaft

13-tooth

12-tooth

For easier shifting.

straight-spline

involute-spline

Countershaft

Straight-spline

Involute-spline

C-1 gear

31 teeth

37 teeth

M-2 gear

17t

16t

C-2 gear

28t

34t

M-3 gear

20t

l9t

C-3 gear

25t

31t

M-4 gear

23t

21t

C-4 gear

23t

28t

M-5 gear

25t

26t

C-5 gear

21t

29t

Final drive

14/48

14/48

Rear sprocket material

is stronger.

Shift fork guide

shaft diameter

7.4 mm

9.0 mm

For less flex, allowing

smoother shifts with

less effort.

Rear disc

brake diameter

220 mm

240 mm

Increased stopping power.

Rear axle dia

17 mm

20 mm

Increased rigidity.

Chain adjuster

Snail-type

CR-type

Swingarm end is closed.

Front brake hose

2-ply

Kevlar braided

vinylon chloride

Front fork

Showa 43mm

Kayaba 46mm

Increased rigidity.

Front fork

cartridge diameter

20 mm

25 mm

Fork underhang

116 mm

75 mm

Fork adjustment

Preload,

Compression and

compression

rebound damping

Shock/stroke

Showa/83mm

Kayaba/ll0mm

Increased travel.

Upper shock Bearing

Helical

Needle

Exhaust head-pipe

Material

Steel

Stainless-steel

Radiator core size

None

105 x 285

z 24mm

Fuel capacity

2.7 gallons

2.6 gallons

Shift lever

Steel

Aluminum

Rear brake pedal

Steel

Aluminum

Throttle effort

10.0 kg/cm

7.8 kg/cm

22 percent less effort.

Clutch effort

6.4 kg

5.8 kg

10 percent less effort.

Warranty period

6 months

6 months

Engine guard

Aluminum tube

1-piece high-

impact plastic

Cylinder

Steel liner

Nikasil

Lighter, cooler-running

structure using gravity die

cast aluminum construction.

Case screws

5mm Allen

8mm hex-head

Easier maintenance.

Remov. Subframe

No

Yes

Three-bolt removal.

Decompr. Lever

Separate

Integrated on

of clutch lever

Rake/trail

27.0 degrees/

27.8 degrees/

105mm

111mm

Wheelbase

57.3 inches

58.3 inches

Engine weight

98 pounds

88 pounds