JE Pistons Piston Kit

• Product Details

  As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for dirt bike and other off-road motorcycle engines. Engineered, forged and machined 100% in the U.S.A., JE Pistons are designed for each specific engine and riding application to provide the ultimate combination of durability and performance. From the motocross track to the trail and everything in between, JE Pistons' performance is proven with every handful of throttle and wave of the checkered flag. Equip your bike with the best in forged pistons.

  • Forged in the U.S.A. using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications.
  • Designed specifically for each engine and use application to provide optimized performance durability.
  • Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin.
  • Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings.
  • Made 100% in the U.S.A.

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• Fitment

• # Part Numbers

  Product Variant	Manufacturer Part #
  100mm / +3mm / 10.5:1	128995
  100mm / +4.5mm / 12.8:1	252747, 247593
  100mm / +4mm / 12.5:1	274759
  100mm / +4mm / 13.0:1	247616, 261976
  100mm / +5mm / 12.5:1	262519
  100mm / STD / 10.5:1	136633, 300275
  100mm / STD / 10.75:1	272144
  100mm / STD / 11.0:1	190862
  100mm / STD / 11.25:1	130682
  100mm / STD / 11.5:1	209283
  100mm / STD / 12.0:1	272145
  100mm / STD / 12.5:1	222094
  100mm / STD / 9.0:1	292329
  101mm / +1mm / 10.5:1	300276
  101mm / +1mm / 10.75:1	272146
  101mm / +1mm / 11.25:1	138978
  101mm / +1mm / 12.0:1	272147
  101mm / +1mm / 9.0:1	292330
  101mm / +4mm / 10.6:1	128996
  102mm / +2mm / 10.5:1	300277
  102mm / +2mm / 10.75:1	272148
  102mm / +2mm / 11.0:1	262289
  102mm / +2mm / 11.25:1	139550
  102mm / +2mm / 12.0:1	272149
  102mm / +2mm / 9.0:1	292331
  102mm / +5mm / 10.8:1	128998
  102mm / STD / 10.0:1	324101, 300175
  102mm / STD / 11.0:1	308416, 324102, 300176
  102mm / STD / 12.0:1	308417
  102mm / STD / 12.5:1	300177
  103mm / +1mm / 10.0:1	324104
  103mm / +1mm / 11.0:1	324105
  103mm / +1mm / 12.5:1	284761
  104mm / +2mm / 11.4:1	247949
  105.5mm / +3.5mm / 10.0:1	284765
  105.5mm / +3.5mm / 11.0:1	284766
  105.5mm / +3.5mm / 12.5:1	284767
  105mm / +5.8mm / 12.5:1	222388
  105mm / +5mm / 11.0:1	300111
  105mm / +5mm / 11.5:1	221844
  105mm / +5mm / 12.0:1	314758
  106mm / +4mm / 11.0:1	300181
  106mm / +4mm / 12.5:1	300182
  58mm / +5mm / 10.5:1	221775
  66mm / STD / 12.0:1	262278
  66mm / STD / 12.5:1	262279
  68mm / +2mm / 13.0:1	262281
  70mm / +4mm / 13.0:1	274177
  74mm / STD / 10.5:1	274194
  74mm / STD / 12.0:1	274195
  74mm / STD / 9.5:1	366830
  76.8mm / STD / 13.5:1	344512
  76.8mm / STD / 14.0:1	344513
  76.8mm / STD / 14.5:1	344514
  76mm / +2mm / 10.5:1	274197
  76mm / +2mm / 11.5:1	275073
  76mm / +2mm / 12.0:1	274198
  76mm / +3mm / 10.5:1	127918
  76mm / STD / 10.7:1	308446
  76mm / STD / 11.0:1	308447
  76mm / STD / 13.0:1	247623
  77mm / +1mm / 11.0:1	308448
  77mm / +4mm / 10.5:1	131243
  77mm / STD / 13.5:1	292759, 243642, 261540, 299244, 247937, 221798, 323556
  77mm / STD / 13.7:1	345199
  77mm / STD / 13.8:1	247596
  77mm / STD / 14.0:1	362953, 345200, 274179, 261541, 274182, 323557
  77mm / STD / 14.2:1	299245
  77mm / STD / 14.5:1	362954, 323558
  78mm / +2mm / 11.0:1	308449
  78mm / STD / 13.5:1	323895
  78mm / STD / 14.4:1	371309
  79.0mm / STD / 13.9:1	355531
  79.0mm / STD / 14.0:1	373034
  79.0mm / STD / 14.4:1	355532, 373035
  79mm / +2mm / 13.0:1	264015, 261542, 247939
  80mm / +3mm / 13.0:1	261543, 247940, 221797
  80mm / +3mm / 13.5:1	247598
  80mm / +4mm / 13.5:1	312479
  80mm / +6mm / 11.5:1	221833
  80mm / STD / 10.75:1	281815
  80mm / STD / 11.5:1	324921, 345193
  80mm / STD / 12.0:1	281816
  80mm / STD / 12.5:1	345194
  80mm / STD / 13.0:1	345195
  80mm / STD / 14.0:1	345201
  80mm / STD / 9.0:1	292801
  80mm / STD / 9.5:1	345192
  82mm / +2mm / 10.75:1	281814
  82mm / +2mm / 11.5:1	324922
  82mm / +2mm / 12.0:1	281813
  83mm / +3mm / 10.75:1	281818
  83mm / +3mm / 11.5:1	324923
  83mm / +3mm / 12.0:1	281817
  83mm / STD / 12.0:1	209291
  85.5mm / +1mm / 10.5:1	261963
  85mm / +.5mm / 10.5:1	261962
  85mm / +2mm / 10.5:1	222085
  85mm / +2mm / 12.0:1	209292
  85mm / STD / 10.0:1	317181, 300274
  85mm / STD / 11.5:1	317182, 274191
  85mm / STD / 12.0:1	317183
  85mm / STD / 12.5:1	317184
  85mm / STD / 9.0:1	317180, 300273
  86.5mm / +2mm / 10.5:1	261964
  86mm / +1mm / 10.6:1	132699
  87mm / +2mm / 10.8:1	133889
  87mm / +2mm / 12.0:1	199656
  87mm / +5mm / 11.0:1	221786
  87mm / STD / 11.5:1	308408
  88.5mm / +3.5mm / 10.8:1	247611
  88mm / +3mm / 11.0:1	177240
  88mm / +3mm / 13.0:1	177239
  88mm / STD / 10.5:1	317220
  88mm / STD / 11.5:1	317221
  88mm / STD / 13.6:1	300267
  88mm / STD / 14.5:1	327145
  89mm / +10mm / 10.5:1	130928
  89mm / +4mm / 10.8:1	247612
  89mm / +4mm / 12.0:1	208552
  89mm / STD / 13.0:1	274219
  90mm / +3mm / 11.5:1	308409
  90mm / +5mm / 10.0:1	317230
  90mm / +5mm / 11.5:1	317231, 274192
  90mm / +5mm / 12.0:1	317232
  90mm / +5mm / 12.5:1	317233
  90mm / 2mm / 10.5:1	317222
  90mm / 2mm / 11.5:1	317223
  90mm / STD / 12.0:1	180297
  90mm / STD / 13.5:1	208659
  91mm / STD / 10.2:1	308412
  91mm / STD / 11.0:1	308413
  91mm / STD / 11.5:1	292761
  91mm / STD / 12.0:1	324952
  91mm / STD / 12.5:1	308414, 324953
  91mm / STD / 13.0:1	324954
  91mm / STD / 9.0:1	308411, 324951
  92mm / +2mm / 12.0:1	199657
  92mm / STD / 10.5:1	317193
  92mm / STD / 11.0:1	366831
  92mm / STD / 11.5:1	317194
  92mm / STD / 12.5:1	317195
  92mm / STD / 13.5:1	157595
  92mm / STD / 8.5:1	317191
  92mm / STD / 9.0:1	366833
  92mm / STD / 9.5:1	317192
  93mm / +2mm / 11.5:1	292762
  93mm / +2mm / 12.5:1	308415
  93mm / +2mm / 13.0:1	300183
  93mm / +6mm / 11.5:1	308410
  93mm / STD / 10.5:1	363685, 363680
  93mm / STD / 11.0:1	363686, 363681
  93mm / STD / 11.5:1	363687, 363682
  93mm / STD / 12.0:1	363688, 363683
  93mm / STD / 9.0:1	363679
  93mm / STD / 9.5:1	363684
  94mm / +2mm / 10.5:1	317197
  94mm / +2mm / 11.5:1	317198
  94mm / +2mm / 12.5:1	317199
  94mm / +2mm / 9.5:1	317196
  94mm / +4mm / 12.0:1	183051
  94mm / STD / 11.5:1	221771
  94mm / STD / 12.0:1	262285
  94mm / STD / 13.0:1	221767
  95.5mm / +5.5mm / 13.0:1	243651
  95.5mm / +5.5mm / 13.5:1	261539
  95.5mm / STD / 12.8:1	252743, 247591
  95.5mm / STD / 13.5:1	252742, 255627
  95mm / +2mm / 10.5:1	306365
  95mm / +2mm / 11.0:1	306366
  95mm / +2mm / 11.5:1	306367
  95mm / +2mm / 12.0:1	306368
  95mm / +2mm / 8.0:1	306363
  95mm / +2mm / 9.0:1	306364
  95mm / STD / 11.8:1	323900
  95mm / STD / 12.5:1	221781, 323901, 221796, 247957, 247944
  95mm / STD / 12.8:1	247625
  95mm / STD / 13.0:1	221777
  95mm / STD / 13.5:1	221780, 366507, 221795, 247956, 175000, 209289, 247626
  95mm / STD / 14.0:1	366508
  96mm / +1mm / 13.0:1	221794
  96mm / +2mm / 13.0:1	221770
  96mm / +3mm / 10.5:1	306371
  96mm / +3mm / 11.0:1	306372
  96mm / +3mm / 11.5:1	306373
  96mm / +3mm / 12.0:1	306374
  96mm / +3mm / 8.0:1	306369
  96mm / +3mm / 9.0:1	306370
  96mm / STD / 12.5:1	362955, 379937, 274755
  96mm / STD / 12.8:1	247613, 284852, 261971
  96mm / STD / 13.5:1	362956, 379938, 274756, 345054, 247614, 261972, 284853
  96mm / STD / 13.8:1	261970
  96mm / STD / 14.0:1	291514, 345055
  96mm / STD / 14.5:1	345056
  97mm / +1mm / 12.5:1	274757
  97mm / +2mm / 11.5:1	138330
  97mm / +2mm / 13.0:1	221793, 247953, 247627
  97mm / +2mm / 13.5:1	175001
  98mm / +2.5mm / 12.8:1	252744, 247594
  98mm / +2.5mm / 13.9:1	252746
  98mm / +2mm / 12.5:1	274760
  98mm / +2mm / 12.8:1	284854, 261973
  98mm / +2mm / 13.0:1	247615
  98mm / +2mm / 13.5:1	261551
  98mm / +3mm / 12.5:1	222087
  98mm / +3mm / 13.0:1	221776, 222086, 247952, 247942
  98mm / +5mm / 10.5:1	306377
  98mm / +5mm / 11.0:1	306378
  98mm / +5mm / 11.5:1	306379
  98mm / +5mm / 8.0:1	306375
  98mm / +5mm / 9.0:1	306376
  99.2mm / STD / 11.0:1	209286
  99.2mm / STD / 12.5:1	221843
  99mm / +3mm / 12.5:1	274758
  99mm / +3mm / 13.0:1	261975
  99mm / +5mm / 12.0:1	221834

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