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Optional Parts List
Technical Information 181
Optional Parts List
These parts and tools may be ordered from your
authorized dealer.
The standard fork spring and shock spring
mounted on the motorcycle when it leaves the
factory are not marked. Before replacing the
springs, be sure to mark them so they can be
distinguished other optional springs.
FRAME Remarks
Driven sprocket < >: Drive chain links
CRF450RX: 50 Teeth, Aluminum
CRF450R/RWE: 49 Teeth,
Aluminum
<114>
Standard
Optional
CRF450RX: 49 Teeth, Aluminum
CRF450R/RWE: 48 Teeth,
Aluminum
CRF450RX: 51 Teeth, Aluminum
CRF450R/RWE: 50 Teeth,
Aluminum
Drive chain
size/link
CRF450RX: RK520EXU/120LJFZ
CRF450R: RK520TXZ/120RJ
Rear brake pads
Standard
Characteristics focusing on
braking force and wear resistance.
Optional
Characteristics that emphasize
controllability.
Rear brake disc
cover and bolts
To extend the life of brake pads in
muddy conditions.
TOOLS Remarks
Pin spanner A To adjust spring preload.
(two spanners required)
Workstand For maintenance
Air gauge For checking tire air pressure
FRAME Remarks
Fork spring
CRF450RX:
27.4 lbf/in (4.8 N/mm)
Standard
(Medium)
CRF450R/RWE: 28.6 Ibf/in
(5.0 N/mm)
Optional
Soft
CRF450RX: 26.3 lbf/in (4.6 N/mm)
CRF450R/RWE: 27.4 Ibf/in
(4.8 N/mm)
Stiff
CRF450RX: 28.6 lbf/in (5.0 N/mm)
CRF450R/RWE:
29.7 Ibf/in
(5.2 N/mm)
1 scribe mark or
no mark
(factory products)
2 scribe marks or
no mark
(factory products)
1 scribe mark
1 scribe mark
2 scribe marks
3 scribe marks
FRAME Remarks
Shock spring C
RF450RX: 296.9 lbf/in (52 N/mm)
CRF450R/RWE: 319.8 lbf/in
(56 N/mm)
Standard
(Medium)
Optional
Soft
CRF450RX: 285.5 lbf/in (50 N/mm)
CRF450R/RWE: 308.3 lbf/in
(54 N/mm)
Stiff
CRF450RX: 308.3 lbf/in (54 N/mm)
CRF450R/RWE: 331.2 lbf/in
(58 N/mm)
CRF450RX:
Red paint or
no mark
(factory products)
CRF450R/RWE:
Blue paint or
no mark
(factory products)
CRF450RX:
Pink paint
CRF450R/RWE:
White paint
CRF450RX:
White paint
CRF450R/RWE:
Yellow paint
31MKE630_RX.book Page 181 Wednesday, April 3, 2019 9:19 AM
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