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| POWERSPORT
Honda®
ATV (2-Stroke)
Individual Pistons
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Gaskets |
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Wiseco recommends replacing the Top End Gasket and
Bearing (if applicable) when replacing a piston. |
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Pistons are supplied with rings, wrist pins & circlips, unless noted otherwise  |
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Models
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 Kit Part #
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Displ.
(cc)
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Bore
Size
(mm)
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Over
Sizes
(mm)
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Price
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| ATC250R 1981-84 |
431M07000 |
70
|
248 |
70 |
STD |
$156.60 |
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| |
431M07025 |
x
|
250 |
70.25 |
0.25 |
$156.60 |
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| Air Cooled |
431M07050 |
64.4
|
251 |
70.5 |
0.5 |
$156.60 |
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| Three Wheeler |
431M07075 |
|
253 |
70.75 |
0.75 |
$156.60 |
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431M07100 |
|
255 |
71 |
1 |
$156.60 |
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431M07125 |
|
257 |
71.25 |
1.25 |
$171.90 |
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431M07150 |
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259 |
71.5 |
1.5 |
$171.90 |
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431M07200 |
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262 |
72 |
2 |
$171.90 |
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Purchase Top End
Bearing:
B1003 |
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| ATC250R 1985 |
526M06600 |
66
|
246 |
66 |
STD |
$152.10 |
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| TRX250R 1986 |
526M06625 |
x
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248 |
66.25 |
0.25 |
$152.10 |
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526M06650 |
72
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250 |
66.5 |
0.5 |
$152.10 |
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| PRO-LITE |
526M06675 |
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252 |
66.75 |
0.75 |
$152.10 |
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| Liquid Cooled |
526M06700 |
|
254 |
67 |
1 |
$152.10 |
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526M06725 |
|
256 |
67.25 |
1.25 |
$167.40 |
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526M06750 |
|
258 |
67.5 |
1.5 |
$167.40 |
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526M06800 |
|
261 |
68 |
2 |
$167.40 |
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526M06850 |
|
265 |
68.5 |
2.5 |
$167.40 |
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526M06900 |
|
269 |
69 |
3 |
$167.40 |
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526M06950 |
|
273 |
69.5 |
3.5 |
$167.40 |
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Purchase Top End
Bearing:
B1003 |
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Replacement ring style is stamped on piston dome - ie. "C" for XC, "G" for XG and "H" for XH |
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