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1985-1999 EVO

  • 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
1985-1999 EVO (Stroke 4.250") - 1
Std Bore: 3.498"
Piston
Kit #
Disp. Bore
Size
Over
Size
Comp
Ratio
Gram
Wt (g)
Skirt
Style
Ring # Pin # Lock # Gasket # Sleeve # Footnote
124962 1342cc 3.503" +.005" 8.5:1 361 Round J140F1-3503 792-2500-14-51C 787-050-MW JC9689 M
126943 1345cc 3.508" +.010" 8.5:1 364 Round J140F1-3508 792-2500-14-51C 787-050-MW JC9689 M
125329 1340cc 3.498 STD 8.5:1 358 Round J140F1-3498 792-2500-14-51C 787-050-MW JC9689 M


1985-1999 EVO (Stroke 4.250") - 2
Std Bore: 3.498"
Piston
Kit #
Disp. Bore
Size
Over
Size
Comp
Ratio
Gram
Wt (g)
Skirt
Style
Ring # Pin # Lock # Gasket # Sleeve # Footnote
125330 1340cc 3.498" STD 9.5:1 378 Round J140F1-3498 792-2500-14-51C 787-050-MW JC9689 M
124846 1342cc 3.503" +.005" 9.5:1 379 Round J140F1-3503 792-2500-14-51C 787-050-MW JC9689 M
124847 1345cc 3.508" +.010" 9.5:1 379 Round J140F1-3508 792-2500-14-51C 787-050-MW JC9689
124848 1353cc 3.518" +.020" 9.5:1 381 Round J140F1-3518 792-2500-14-51C 787-050-MW JC9689 M
124849 1361cc 3.528" +.030" 9.5:1 383 Round J140F1-3528 792-2500-14-51C 787-050-MW JC9689 M


1985-1999 EVO (Stroke 4.250") - 3
Std Bore: 3.498"
Piston
Kit #
Disp. Bore
Size
Over
Size
Comp
Ratio
Gram
Wt (g)
Skirt
Style
Ring # Pin # Lock # Gasket # Sleeve # Footnote
133731 1340cc 3.498" STD 10.0:1 384 Round J140F1-3498 792-2500-14-51C 787-050-MW JC9689 M
133732 1342cc 3.503" +.005" 10.0:1 393 Round J140F1-3503 792-2500-14-51C 787-050-MW JC9689 M
133733 1345cc 3.508" +.010" 10.0:1 396 Round J140F1-3508 792-2500-14-51C 787-050-MW JC9689 M
133734 1353cc 3.518" +.020" 10.0:1 391 Round J140F1-3518 792-2500-14-51C 787-050-MW JC9689 M
133735 1361cc 3.528" +.030" 10.0:1 395 Round J140F1-3528 792-2500-14-51C 787-050-MW JC9689 M


1985-1999 EVO (Stroke 4.250") - 4
Std Bore: 3.498"
Piston
Kit #
Disp. Bore
Size
Over
Size
Comp
Ratio
Gram
Wt (g)
Skirt
Style
Ring # Pin # Lock # Gasket # Sleeve # Footnote
134092 1340cc 3.498" STD 10.5:1 399 Round J140F1-3498 792-2500-14-51C 787-050-MW JC9689 M
134093 1342cc 3.503" +.005" 10.5:1 404 Round J140F1-3503 792-2500-14-51C 787-050-MW JC9689
134094 1345cc 3.508" +.010" 10.5:1 406 Round J140F1-3508 792-2500-14-51C 787-050-MW JC9689 M
134095 1353cc 3.518" +.020" 10.5:1 408 Round J140F1-3518 792-2500-14-51C 787-050-MW JC9689 M


1985-1999 EVO
Std Bore: 3.625"
Piston
Kit #
Disp. Bore
Size
Over
Size
Comp
Ratio
Gram
Wt (g)
Skirt
Style
Ring # Pin # Lock # Gasket # Sleeve # Footnote
161939 1437cc 3.625" STD 9.25:1 367 Round J150F1-3625 792-2500-14-51C 787-050-MW JC9691 M, 9
161940 1441cc 3.630" +.005" 9.25:1 367 Round J160F1-3635 792-2500-14-51C 787-050-MW JC9691 L, 9
161941 1446cc 3.635" +.010" 9.25:1 368 Round J160F1-3635 792-2500-14-51C 787-050-MW JC9691 M, 9
161944 1441cc 3.630" +.005" 10.25:1 399 Round J160F1-3635 792-2500-14-51C 787-050-MW JC9691 L, 9
161945 1446cc 3.635" +.010" 10.25:1 399 Round J160F1-3635 792-2500-14-51C 787-050-MW JC9691 L, 9
161946 1453cc 3.645" +.020" 10.25:1 404 Round J120F1-3645 792-2500-14-51C 787-050-MW JC9691 L, 9
161947 1564cc 3.625" STD 9.5:1 345 Round J150F1-3625 792-2500-14-51C 787-050-MW JC9691 M, 10
161948 1572cc 3.635" +.010" 9.5:1 348 Round J160F1-3635 792-2500-14-51C 787-050-MW JC9691 M, 10

- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.


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