ENGINE
HIGH-PERFORMANCE PISTONS (CONT)
BORE (MM)
BORE OVER
WISECO
REPL.
REPL.
TOP-END
X STROKE
DISPL. SIZE
SIZES
PK KIT
PISTON
REPL. RING CIRCLIPS
WRIST PIN
BEARING
FITS MODEL
(MM)
(CC)
(MM) (MM)
PART #
PART #
SET PART # PART #
PART #
PART #
CRF450R 02-08
96
449
96.0
STD
0903-0572 0910-0758
0912-0122
CW19
0913-0009
-
13:5 Hi-Compression.
x
ArmorGlide skirt coated
62.1
96
449
96.0
STD
-
0910-2944
-
CW19
-
-
x
13.5:1 High Compression
62.1
Boxed Forging
Shot peened
CRF450R 02-08
101
496
101.0
5.00
-
-
0912-0121
CW19
0913-0009
-
CRF450X 05-15
x
62.1
12.5:1 Compression
ArmorGlide skirt coated
CRF450R 09-12
96
449
96.0
STD
-
0910-2933
0912-0122
CW19
0913-0012
-
12:1 Stock Compression
x
ArmorGlide skirt coated
62.1
CRF450R 09-12
96
449
96.0
STD
-
0910-2934
0912-0122
CW19
0913-0012
-
13:1 High-Compression
x
ArmorGlide skirt coated
62.1
CRF450R 09-16
96
449
96.0
STD
-
0910-2949
-
CW19
-
-
x
62.1
Boxed Forging
Shot peened
Titanium Nitride coated rings
CRF450R 09-16
96
449
96.0
STD
-
0910-2953
-
CW19
-
-
RACER’S CHOICE SERIES
x
14:1 High Compression
62.1
Shot peened
Titanium Nitride coated rings
ArmorGlide skirt coated
CRF450X 05-06
96
449
96.0
STD
-
4753M09600 0912-0122
CW19
0913-0009
-
x
ArmorGlide skirt coated
62.1
CRF450X 05-17
96
449
96.0
STD
0903-0574 0910-0334
0912-0122
CW19
0913-0009
-
12:1 Compression
x
62.1
96
449
96.0
STD
0903-0580 4755M09600 0912-0122
CW19
0913-0009
-
12.5:1 Hi-Compression.
x
-
-
-
ArmorGlide skirt coated
62.1
CRF450X 05-17
96
449
96.0
STD
0903-0581 0910-0335
0912-0122
CW19
0913-0009
-
x
ArmorGlide skirt coated
62.1
CRF450X 05-17
96
449
96.0
STD
-
0910-0758
0912-0122
CW19
0913-0009
-
13:5 Hi-Compression.
x
62.1
89
497
89.0
STD
-
4117M08900 3504XC
CW21
S527
-
XL500S/R 79-82
x
89.5
0.5
-
4117M08950 3524XC
FT500 82-84
80
90.0
1.0
-
4117M09000 3544XC
10.5:1 Compression
XR500 79-82
89
497
89.0
STD
-
-
3504XC
CW21
S527
-
XL500 79-82
x
89.5
0.5
-
4163M08950 3524XC
FT500 82-84
80
90.0
1.0
-
4163M09000 3544XC
12:1 Compression
XR500R 83-84
92
498
92.0
STD
-
0910-2903
3622XC
CW22
-
-
x
92.5
0.5
-
4330M09250 3642XC
10.25:1 Compression
75
93.0
1.0
-
4330M09300 3661XC
XL600R 83-87
100
589
100.0
STD
-
-
3937XH
CW24
-
-
Radial Head
x
101.0
1.0
-
4332M10100 3977XH
75
97
591
97.0
STD
-
4577M09700 3819XH
CW24
-
-
Radial Head
x
97.5
0.5
-
4577M09750 -
9:1 Compression
80
98.0
1.0
-
4577M09800 3858XH
*88-90 model has Nikasil Bore -
97
591
97.0
STD
-
-
3819XH
CW24
-
-
Radial Head
x
97.5
0.5
-
4366M09750 -
11:1 Compression
80
100.0
3.0
-
0910-0760
3937XH
Cylinder sleeving or replating
required for oversizes
DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES.
SEE PAGE 4 FOR IMPORTANT EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND WARRANTY INFORMATION.
2017 PARTS UNLIMITED OFFROAD