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| Machined from 2618 T6 high tensile forged aluminum
Dome/Dish features smooth flowing radii and require no deburring or preparation
JE designs are specifically engineered for extreme applications including professional competition
Pins, pin fitment, lock and rings included
Compression ratio calculated with 84cc chamber volume & .040" gasket (lower compression can be achieved with thicker gaskets) |
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Twin Cam 103" Flat Top
Std Bore: 3.875" |
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| Disp. |
Bore Size |
Over Size |
Piston Kit # |
Comp Ratio |
Gram Weight |
Skirt Style |
Ring # |
Pin # |
Lock # |
Gasket # |
Sleeve # |
 |
| 1691 |
3.875" |
STD |
262393 |
10:1 |
NEW |
Round |
XK3875 |
927-2500-15-51C |
927-073-MW |
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Bore & Hone |
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| 1695 |
3.880" |
+.005" |
262395 |
10:1 |
359 |
Round |
XK3880 |
927-2500-15-51C |
927-073-MW |
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Bore & Hone |
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| 1700 |
3.885" |
+.010" |
262397 |
10:1 |
360 |
Round |
XK3885 |
927-2500-15-51C |
927-073-MW |
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Bore & Hone |
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| 1705 |
3.895" |
+.020" |
262399 |
10:1 |
NEW |
Round |
XK3895 |
927-2500-15-51C |
927-073-MW |
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Bore & Hone |
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- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.