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 #
HONDA 2-STROKE (CONT)
CR250R 84-85
66
246
66.0
STD
-
526M06600
2598CD
CW18
S-511X
B1003
Pro-Lite
x
66.25
0.25
-
526M06625
2608CD
72
66.5
0.5
-
526M06650
2618CD
66.75
0.75
-
526M06675
2628CD
67.0
1.0
-
526M06700
2638CD
67.25
1.25
-
526M06725
2648CD
67.5
1.5
-
526M06750
2658CD
68.0
2.0
-
526M06800
2677CD
CR250R 86-89
66.4
249
66.4
STD
0903-0273 614M06640
2614CD
CW18
S-508
B1003
Pro-Lite
x
67.0
0.6
0903-0200 614M06700
2638CD
*Nikasil Bore-Cylinder sleeving or
72
67.5
1.1
0903-0205 614M06750
2658CD
replating required for oversizes
68.0
1.6
-
614M06800
2677CD
68.5
2.1
-
614M06850
2697CD
CR250R 90-91
66.4
249
66.4
STD
0903-0274 614M06640
2614CD
CW18
S-508
B1003
Pro-Lite
x
67.0
0.6
-
614M06700
2638CD
*Nikasil Bore-Cylinder sleeving or
72
67.5
1.1
-
614M06750
2658CD
replating required for oversizes
68.0
1.6
0903-0546 614M06800
2677CD
68.50
2.1
-
614M06850
2697CD
CR250R 92-96
66.4
249
66.4
STD
0903-0292 614M06640
2614CD
CW18
S-508
B1003
Pro-Lite
x
67.00
0.6
0903-0272 614M06700
2638CD
*Nikasil Bore-Cylinder sleeving or
72
67.5
1.1
-
614M06750
2658CD
replating required for oversizes
68.00
1.6
-
614M06800
2677CD
68.50
2.1
0903-0258 614M06850
2697CD
CR250R 97-01
66.4
249
66.4
STD
0903-0311 702M06640
2614CD
CW18
S-508
B1003
Pro-Lite
x
67.0
0.6
0903-0219 702M06700
2638CD
*Nikasil Bore -
72
67.5
1.1
0903-0208 702M06750
2658CD
Cylinder sleeving or replating
68.0
1.6
0903-0202 702M06800
2677CD
required for oversizes
68.5
2.1
0903-0523 0910-1232
2697CD
CR250R 02-04
66.4
249
66.4
STD
0903-0307 801M06640
2614CD
CW18
S-508
B1003
Pro-Lite
x
67.50
1.1
0903-0542 0910-1243
2658CD
72
68.50
2.1
0903-0249 0910-0201
2697CD
CR250R 02-04
66.4
249
66.4
STD
-
0910-0736
0912-0106
CW18
S-508
B1003
Racer’s Choice 250cc Single Ring
x
Electra Coated
72
CR250R 05-07
66.4
249
66.4
STD
0903-0550 0910-0737
0912-0106
CW18
S-508
B1003
Single ring
x
Electra Coated
72
CR480R 82-83
89
472
89.0
STD
-
0910-2022
-
CW20
S-512X
B1004
Pro-Lite
x
89.5
0.5
-
0910-2023
-
76
90.0
1.0
-
0910-2024
-
90.5
1.5
-
0910-2025
-
91.0
2.0
-
0910-2026
-
CR480R 82-83
89
472
89.0
STD
-
-
3504TD 1
CW20
S-512X
B1004
Pro-Lite
x
89.5
0.5
-
-
3524TD 1
76
90.0
1.0
-
-
3544TD 1
90.5
1.5
-
-
3564TD 1
91.0
2.0
-
-
3583TD 1
CR500R 84-01
89
491
89.0
STD
-
0910-2022
-
CW20
S-512X
B1004
Pro-Lite
x
89.5
0.5
-
0910-2023
-
ArmorGlide skirt coating
79
90.0
1.0
-
0910-2024
-
90.5
1.5
-
0910-2025
-
91
2.0
-
0910-2026
-
CR500R 84-01
89
491
89
STD
-
-
3504TD 1
CW20
S-512X
B1004
Pro-Lite
x
89.5
0.5
-
-
3524TD 1
79
90
1.0
-
-
3544TD 1
90.5
1.5
-
-
3564TD 1
91
2.0
-
-
3583TD 1
HONDA MOTORCYCLE 4-STROKE (CORRECT REPLACEMENT RING STYLE IS STAMPED ON DOME OF PISTON – EXAMPLE “C” FOR XC, “G” FOR XG AND “H” FOR XH)
Z50R 82-87
39
49.5
39.0
STD.
-
0910-0738
0912-0107
CW13
0913-0004
-
11:1 Compression
x
50.7
39.50
0.5
-
0910-0739
-
Cylinder boring required for oversizes
41.4
53.3
40.50
1.5
-
-
-
XR50R 88-03
39
85
50
11.0
-
-
0912-0110
CW13
0913-0004
-
CRF50F 04-13
x
88
52.00
13.0
-
-
0912-0111
10.5:1 Compression
41.4
*Will not fit OEM cylinder
Race Only
39
85
50
11.0
-
-
0912-0110
CW13
0913-0004
-
XR50R 88-03
x
88
52.0
13.0
-
-
0912-0111
CRF50F 04-13
41.4
13:1 Compression
*Will not fit OEM cylinder
XR50R 00-03
39
49.5
39.0
STD
-
0910-0202
CW13
0913-0005
-
CRF50F 04-13
x
50.7
39.5
0.50
-
0910-0203
11:1 Compression
41.40
52
40.0
1.00
-
0910-0204
53.3
40.5
1.50
-
0910-0205
1 Not for use with piston PART #s 0910-2022, 0910-2023, 0910-2024, 0910-2025 or 0910-2026.
HIGH-PERFORMANCE PISTONS continued on next page.
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