ENGINE
HIGH-PERFORMANCE PISTONS (CONT)
OVER
REPL.
BORE (MM)
DISPL. BORE
SIZES PK KIT
PISTON
REPL. RING CIRCLIPS
REPL. WRIST
TOP-END
FITS MODEL
X STROKE (MM) (CC)
SIZE (MM) (MM) PART #
PART #
SET PART # PART #
PIN PART #
BEARING PART #
XR200 to 83
65.5
192
65.5
STD
0903-0231 4156M06550 2579XC
CW15
S-522
-
10:1 Compression
x
66.0
0.5
0903-0172 4156M06600 2598XC
-
-
-
57.8
66.5
1.0
0903-0235 4156M06650 2618XC
-
-
-
65.5
223
65.5
STD
-
0910-0332
-
CW15
-
-
x
-
-
-
-
-
-
11:1 Compression
66.2
-
-
-
-
-
-
CRF250R 04-07
78
249
78.0
STD
0903-0553 0910-0333
0912-0120
CW16
0913-0008
-
CRF250X 04-17
x
-
-
-
-
-
-
12.9:1 Standard Compression
52.2
-
-
-
-
-
-
78
249
78.0
STD
0903-0551 0910-0756
0912-0120
CW16
0913-0008
-
CRF250X 04-17
x
-
-
-
-
-
-
13.5:1 Hi-Compression.
52.2
-
-
-
-
-
-
ArmorGlide skirt coated
-
-
-
-
-
-
CRF250R 04-09
78
276
82
4.00
-
0910-2938
-
CW16
0913-0008
-
x
-
-
-
-
-
-
276cc Big Bore Kit
52.2
-
-
-
-
-
-
ArmorGlide skirt coated
-
-
-
-
-
-
78
249
78.0
STD
-
0910-1677
0912-0120
CW16
0913-0008
-
13.1:1 Stock-Compression
x
-
-
-
-
-
-
ArmorGlide skirt coated
52.2
-
-
-
-
-
-
CRF250R 08-09
78
249
78.0
STD
-
0910-2931
0912-0120
CW16
0913-0008
-
x
-
-
-
-
-
-
52.2
-
-
-
-
-
-
CRF250R 08-09
78
249
78.0
STD
-
0910-2948
-
CW16
0913-0008
-
RACER’S CHOICE SERIES
x
-
-
-
-
-
-
14:1 High Compression
52.2
-
-
-
-
-
-
-
-
-
-
-
-
Shot peened
-
-
-
-
-
-
Titanium Nitride coated rings
-
-
-
-
-
-
ArmorGlide skirt coated
-
-
-
-
-
-
76.8
249
76.8
STD
0903-0940 0910-2886
-
CW16
0913-0008
-
13.2:1 Stock Compression
x
-
-
-
-
-
-
ArmorGlide skirt coated
53.8
-
-
-
-
-
-
CRF250R 10-13
76.8
249
76.8
STD
-
0910-2887
-
CW16
0913-0008
-
14.2:1 High Compression
x
-
-
-
-
-
-
53.8
-
-
-
-
-
-
CRF250R 10-15
76.8
-
76.8
-
-
0910-3933
-
CW15
-
-
+2mm long rod conversion
x
-
-
-
-
-
-
Max compression
53.8
-
-
-
-
-
-
-
-
-
-
-
-
76.8
-
76.8
STD
0903-1137 -
-
CW16
0913-0008
-
13.5:1 Stock Compression
x
-
-
-
-
-
-
53.8
-
-
-
-
-
-
XL250 79-82
74
248
74.0
STD
-
-
2913XC
CW19
S-376
-
x
74.5
0.5
-
-
2933XC
-
-
-
10:1 Compression
57.8
75.0
1.0
-
4171M07500 2953XC
-
-
-
75.5
1.5
-
-
2973XC
-
-
-
76.0
2.0
-
-
2992XC
-
-
-
XR250R 84-85
75
250
75.0
STD
-
-
2953XG
CW17
S-523
-
x
75.5
0.5
-
4329M07550 2973XG
-
-
-
56.5
76.0
1.0
-
4329M07600 2992XG
-
-
-
XR250R 86-04
73
250
73.0
STD
0903-0265 4466M07300 2874XC
CW17
0913-0007 3
-
10.5:1 Compression;
x
73.5
0.5
0903-0216 4466M07350 2894XC
-
-
-
cylinder boring
59.5
74.0
1.0
0903-0193 4466M07400 2913XC
-
S-523 4
-
required for oversizes
75.5
2.5
-
0910-0753
2973XC
-
-
-
77.0
4.0
0903-0570 0910-0754
0912-0118
-
-
-
78.0
5.0
0903-0571 0910-0755
0912-0119
-
-
-
73
250
73.0
STD
-
4466M07300 2874XC
CW17
0913-0007 3
-
10.5:1 Compression; cylinder
x
73.5
0.5
-
4466M07350 2894XC
-
-
-
boring required for oversizes
59.5
74.0
1.0
-
4466M07400 2913XC
-
S-523 4
-
75.5
2.5
-
0910-0753
2973XC
-
-
-
77.0
4.0
-
0910-0754
0912-0118
-
-
-
78.0
5.0
-
0910-0755
0912-0119
-
-
-
XR350R 1983-84
84
339
84.0
STD
-
-
3307XC
CW21
S-529
-
Radial Head
x
84.5
0.5
-
-
3327XC
-
-
-
61.3
85.0
1.0
-
4286M08500 3347XC
-
-
-
*Will not fit XL models
-
-
-
-
-
-
XR400R 96-04
85
397
85.0
STD
-
4606M08500 3347XC
CW20
S-520
-
10:1 Compression
x
86.0
1.0
-
4606M08600 3386XC
-
-
-
70
87.0
2.0
-
0910-2910
3425XC
-
-
-
88.0
3.0
-
0910-2911
3465XC
-
-
-
4 (77-78mm).
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.
2018 PARTS UNLIMITED OFFROAD