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 #
GAS GAS 4-STROKE (CONT)
EC 450F 13-15
95
449
95.0
STD
-
0910-0373
-
CW18
-
-
12.3:1 STD bore; 13.5:1 for +2.00 bore
x
97.0
2.00
-
0910-0374
-
-
-
-
Nikasil Bore-Cylinder
63.4
-
-
-
-
-
-
-
-
-
-
-
-
oversizes. ArmorGlide skirt coated
-
-
-
-
-
-
HONDA 2-STROKE
CR80R 80-82
49.5
79.7
49.5
STD
-
-
1949CD
CW12
S538 2
B1015
TC80 70-78
x
50.0
0.5
-
450M05000 1969CD
-
-
-
41.4
50.25
0.75
-
-
-
-
-
-
50.5
1.0
-
-
1988CD
-
-
-
51.0
1.5
-
450M05100 2008CD
-
-
-
51.5
2.0
-
-
2028CD
-
-
-
49.5
79.7
49.5
STD
-
-
1949CD
CW12
S538 2
B1015
x
50.0
0.5
-
-
1969CD
-
-
-
41.4
50.5
1.0
-
509M05050 1988CD
-
-
-
51.0
1.5
-
509M05100 2008CD
-
-
-
51.5
2.0
-
-
2028CD
-
-
-
47
82.9
47.0
STD
-
-
1850CD
CW13
-
-
x
47.5
0.5
-
-
1869CD
-
-
-
47.8
48.0
1.0
-
-
1890CD
-
-
-
48.5
1.5
-
-
1909CD
-
-
-
49.0
2.0
-
-
1929CD
-
-
-
47
82.9
47.0
STD
0903-0280 643M04700 1850CS
CW14
S-517
B1012
Pro-Lite
x
47.5
0.5
-
643M04750 1869CS
-
-
-
*Nikasil Bore – Cylinder sleeving or
replating required for oversizes
47.8
48.0
1.0
-
643M04800 1890CS
-
-
-
49.0
2.0
-
0910-1221
1929CS
-
-
-
CR80R 86-02
46
79.4
46
STD
-
0910-1227
-
CW14
S-517
B1012
Pro-Lite
x
-
-
-
-
-
-
International bore. Not available in the U.S. 47.8
-
-
-
-
-
-
CR80R 92-02
47
82.9
47.0
STD
0903-0298 643M04700 1850CS
CW14
S-517
B1012
x
47.5
0.5
0903-0186 643M04750 1869CS
-
-
-
*Nikasil Bore – Cylinder sleeving or
replating required for oversizes
47.8
48.0
1.0
0903-0187 643M04800 1890CS
-
-
-
49.0
2.0
0903-0518 0910-1221
1929CS
-
-
-
47
82.9
47.0
STD
-
798M04700 1850CS
CW14
S-517
B1012
GP style-Electra Coated
x
90.1
49.0
2.0
-
-
1929CS
-
-
-
47.8
-
-
-
-
-
-
CR80R 93-02-Supermini
52
101.5
52.0
5.00
0903-0285 0910-0322
-
CW14
-
B1012
x
-
-
-
-
-
-
47.8
-
-
-
-
-
-
CR85R 03-07
47.5
84.7
47.5
STD
0903-0302 833M04750 1869CS
CW14
S-517
B1012
Pro-Lite
x
48.0
0.5
0903-0670 0910-1252
1890CS
-
-
-
Nikasil Bore
47.8
48.5
1.0
0903-0545 0910-1253
1909CS
-
-
-
49.5
2.0
0903-0175 833M04950 1949CS
-
-
-
50.5
3.0
0903-0183 833M05050 -
-
-
-
CR85R 03-07
47.5
84.7
47.5
STD
-
0910-0323
1869CS
CW14
S-517
-
GP style – Electra Coated
x
-
-
-
-
-
-
47.8
-
-
-
-
-
-
56
123
56.0
STD
-
339M05600 2205CD
CW14
S-394 2
B1018
MT125 73-78
x
56.5
0.5
-
-
2224CD
-
-
-
50
57.0
1.0
-
339M05700 2244CD
-
-
-
57.5
1.5
-
339M05750 -
-
-
-
58.0
2.0
-
339M05800 2284CD
-
-
-
CR125R 79
56
123
56.0
STD
-
-
-
CW14
S-394 2
B1018
*Chrome Bore – Cylinder
x
56.5
0.5
-
448M05650 2224CD
-
-
-
sleeving or replating
50
57.0
1.0
-
-
2244CD
-
-
-
required for oversizes
57.5
1.5
-
448M05750 -
-
-
-
CR125R 80-84
55.5
120
55.5
STD
-
448M05550 2185CD
CW14
S-394 2
B1018
x
55.75
0.25
-
-
-
-
-
-
50
56.0
0.5
-
-
2205CD
-
-
-
56.25
0.75
-
-
-
-
-
-
56.5
1.0
-
448M05650 2224CD
-
-
-
57.0
1.5
-
-
2244CD
-
-
-
57.5
2.0
-
448M05750 -
-
-
-
CR125R 85-86
54
124
54.0
STD
-
518M05400 2126CD
CW14
0913-0006
B1006
x
54.25
0.25
-
-
2136CD
-
-
-
54
54.5
0.5
-
518M05450 2146CD
-
-
-
55.0
1.0
-
518M05500 2165CD
-
-
-
55.25
1.25
-
-
2175CD
-
-
-
55.5
1.5
-
518M05550 2185CD
-
-
-
56.0
2.0
-
518M05600 2205CD
-
-
-
2 Piston pin not included.
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