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Twin Cam 88 (1999-06) - 88 cu. in. - High Compression Standard Bore Kits
Includes pistons, rings, retainer clips, chrome pins.
10.5:1 Compression - Domed - Screamin' Eagle ignition module required
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1448cc 3.750"/STD 4.000" K1726 $259.28
1456cc 3.760"/.010 4.000" K1728 $259.28
1463cc 3.770"/.020 4.000" K1729 $259.28
1471cc 3.780"/.030 4.000" K1730 $259.28

Twin Cam 88 (1999-06) - 95 cu. in. - 1550cc Big Bore Kits
Includes pistons, rings, retainer clips, chrome pins, top end gasket kit.
9:1 Compression - Flat Top - Cylinder boring required.
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1546cc 3.875"/STD 4.000" K1719 $395.47
1550cc 3.880"/.005 4.000" K1720 $395.47
1554cc 3.885"/.010 4.000" K1721 $395.47
1562cc 3.895"/.020 4.000" K1722 $395.47

10.5:1 Compression - Domed
Screamin' Eagle ignition module required - Cylinder boring required.
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1546cc 3.875"/STD 4.000" K1709 $395.47
1550cc 3.880"/.005 4.000" K1710 $395.47
1554cc 3.885"/.010 4.000" K1711 $395.47
1562cc 3.895"/.020 4.000" K1712 $395.47
1570cc 3.905"/.030 4.000" K1713 $395.47

Twin Cam 88 (1999-06) - 100 cu. in. - 1650cc "Sleeper Series"
Includes pistons, rings, retainer clips, chrome pins, top end gasket kit.
10:1 Compression - Domed
Big bore cylinder or cylinder resleeving required (Sleeve #3209FA) - Cases must be bored.
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1650cc 4.000"/STD 4.000" K1744 $324.74

10.5:1 Compression - Domed
Big bore cylinder or cylinder resleeving required (Sleeve #3209FA) - Cases must be bored.
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1650cc 4.000"/STD 4.000" K1760 $268.51

Twin Cam 88 (1999-06) - 107 cu. in. - 1752cc
Includes pistons, rings, retainer clips, chrome pins.
10.5:1 Compression - Domed
Big bore cylinders required - Cases must be bored.
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1752cc 4.125"/STD 4.000" K1759 $268.51

Twin Cam 88 (1999-06) - 110 cu. in. - 1802cc - 4 3/8" Stroker
Includes pistons, rings, retainer clips, chrome pins.
10:1 Compression - Reverse Dome
Big bore cylinder or cylinder resleeving required (Sleeve #3209FA) - Cases must be bored.
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1802cc 4.000"/STD 4.375" K1745 $327.17

Twin Cam 96 (2007-08) 1691cc (103 cu. in.)
(Also fits Twin Cam88 '99-'06 with 4 3/8" storker crank)
Includes pistons, rings, retainer clips, chrome pins.
9:1 Compression "Reverse Dome"
Cylinder boring required.
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1691cc 3.875"/STD 4.375" K1751 $268.51
1695cc 3.880"/.010 4.375" K1752 $268.51
1700cc 3.885"/.020 4.375" K1753 $268.51

10.5:1 Compression "Reverse Dome"
Cylinder boring required.
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1691cc 3.875"/STD 4.375" K1754 $268.51
1695cc 3.880"/.010 4.375" K1755 $268.51
1700cc 3.885"/.020 4.375" K1756 $268.51

Twin Cam 96 (2007-08)
(Also fits Twin Cam88 '99-'06 with 4 3/8" storker crank)
Includes pistons, rings, retainer clips, chrome pins.
10.5:1 Compression "Reverse Dome"
Big bore cylinders and case boring required.
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1802cc 4.000"/STD 4.375" K1757 $268.51
1917cc 4.125"/.010 4.375" K1758 $268.51

883 Evolution Sportster "Overbore Kit" from 883cc to 1200cc
(73 cu. in.) 1986 thru 2007 "Reverse Dome Design"
8.5:1 Compression "Reverse Dome"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1200cc 3.498"/STD 3.812" K1723 $253.86
1207cc 3.508"/.010 3.812" K1724 $253.86
1214cc 3.518"/.020 3.812" K1725 $253.86

9.5:1 Compression "Reverse Dome"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1200cc 3.498"/STD 3.812" K1655 $253.86
1207cc 3.508"/.010 3.812" K1656 $253.86
1214cc 3.518"/.020 3.812" K1657 $253.86
1221cc 3.528"/.030 3.812" K1658 $253.86
1228cc 3.538"/.040 3.812" K1659 $253.86

10:1 Compression "Reverse Dome"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1200cc 3.498"/STD 3.812" K1682 $253.86
1207cc 3.508"/.010 3.812" K1683 $253.86
1214cc 3.518"/.020 3.812" K1684 $253.86

1000 Iron Sportster 1972-85
9:1 Compression "Flat Top"- Does not fit XR style head.
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1000cc 3.188"/STD 3.812" K1600 $211.14
1003cc 3.198"/.010 3.812" K1601 $211.14
1006cc 3.208"/.020 3.812" K1602 $211.14
1016cc 3.218"/.030 3.812" K1603 $211.14
1022cc 3.228"/.040 3.812" K1604 $211.14

1200 Evolution Sportster 1988 thru 2003 (73 cu. in. )
1100 Evolution Sportster 1986 thru 1987
All Evolution Sportster & Buell models with stock 1200 heads
9:1 Compression "Flat Top"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1200cc 3.498"/STD 3.812" K1660 $247.04
1207cc 3.508"/.010 3.812" K1661 $247.04
1214cc 3.518"/.020 3.812" K1662 $247.04
1221cc 3.528"/.030 3.812" K1663 $247.04
1228cc 3.538"/.040 3.812" K1664 $247.04
10.5:1 Compression "Domed"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1200cc 3.498"/STD 3.812" K1685 $247.04
1207cc 3.508"/.010 3.812" K1686 $247.04
1214cc 3.518"/.020 3.812" K1687 $247.04
1221cc 3.528"/.030 3.812" K1688 $247.04
1228cc 3.538"/.040 3.812" K1689 $247.04

1200cc Sportster 2004-08 (73 cu. In.) Standard Bore
10.5:1 Compression
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1200cc 3.498"/STD 3.812" K1746 $251.73
1207cc 3.508"/.010 3.812" K1747 $251.73
1214cc 3.518"/.020 3.812" K1748 $251.73

12:1 Compression "Domed" "Race Only"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1200cc 3.498"/STD 3.812" K1737 $251.73
1207cc 3.508"/.010 3.812" K1738 $251.73
1214cc 3.518"/.020 3.812" K1739 $251.73

1200cc Sportster 2004-07 (88 cu. In.) 3-13/16" Big Bore Kit
10.5:1 Compression "Reverse Dome"
Wiseco Ring Package: Top Ring 1.5mm - 2nd Ring 1.5mm - Oil Ring 3.0mm
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1426cc 3.8125"/STD 3.812" K1735 $269.72

Buell XB9R Firebolt and XB9S Lightning
(60 cu. In.) Standard Bore, High Compression
10:1 Compression "Domed"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
985cc 3.498"/STD 3.126" K1740 $251.73
990cc 3.508"/.010 3.126" K1741 $251.73


S1 White Lightning, S3/S3T Thunderbolt & Buell Models - With 101HP Thunderstorm Heads installed
10:1 Compression "Domed"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1200cc 3.498"/STD 3.812" K1700 $249.09
1207cc 3.508"/.010 3.812" K1701 $249.09
1214cc 3.518"/.020 3.812" K1702 $249.09

1200cc Buell XB12R Firebolt and XB12S Lightning
(73 cu. In.) Standard Bore, High Compression
12:1 Compression "Domed" "Race Only"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1200cc 3.498"/STD 3.812" K1737 $251.73
1207cc 3.508"/.010 3.812" K1738 $251.73
1214cc 3.518"/.020 3.812" K1739 $251.73

1200cc Buell XB12R Firebolt and XB12S Lightning 3-13/16"
(88 cu. In.) Big Bore Kit
10.5:1 Compression "Reverse Dome"
Wiseco Ring Package: Top Ring 1.5mm - 2nd Ring 1.5mm - Oil Ring 3.0mm
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1426cc 3.8125"/STD 3.812" K1735 $269.73


1200cc Buell XB12R Firebolt and XB12S Lightning 3-13/16"
(88 cu. In.) Big Bore Kit
14:1 Compression "Domed" "Race Only"
Wiseco Ring Package: Top Ring 1.5mm - 2nd Ring 1.5mm - Oil Ring 3.0mm
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1426cc 3.8125"/STD 3.812" K1736 $269.73

1340 Evolution Big Twin (80 cu. In.) 1984 thru 1999
8.5:1 Compression "Flat Top"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1340cc 3.498"/STD 4.250" K1640 $240.11
1345cc 3.508"/.010 4.250" K1641 $240.11
1353cc 3.518"/.020 4.250" K1642 $240.11
1361cc 3.528"/.030 4.250" K1643 $240.11
1369cc 3.538"/.040 4.250" K1644 $240.11

10:1 Compression "Domed"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1340cc 3.498"/STD 4.250" K1665 $249.09
1342cc 3.503"/.005 4.250" K1675 $Call
1345cc 3.508"/.010 4.250" K1666 $249.09
1353cc 3.518"/.020 4.250" K1667 $249.09
1361cc 3.528"/.030 4.250" K1668 $249.09
1369cc 3.538"/.040 4.250" K1669 $249.09

11:1 Compression "Domed"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1340cc 3.498"/STD 4.250" K1690 $249.09
1342cc 3.503"/.005 4.250" K1691 $249.09
1345cc 3.508"/.010 4.250" K1692 $249.09
1353cc 3.518"/.020 4.250" K1693 $249.09
1361cc 3.528"/.030 4.250" K1694 $249.09
1369cc 3.538"/.040 4.250" K1695 $249.09

1340 Evolution Big Twin (80 cu. in.) 1984 thru 1999 for Screamin' Eagle Cylinder Head
10.5:1 Compression "Domed"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1342cc 3.503"/.005 4.250" K1714 $247.07
1345cc 3.508"/.010 4.250" K1715 $247.07
1353cc 3.518"/.020 4.250" K1716 $247.07

1340 Evolution 35/8" Big Bore Kit (88 cu. in.) Stock Stroke 1984 thru 1999 "Must use aftermarket engine case on 1990 thru 1995 model only"
9.25:1 Compression "Flat Top"
Hastings Ring Package: Top Ring .062" - 2nd Ring .062" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1438cc 3.625"/STD 4.250" K1750 $257.84

1340 Evolution 3-3/4" Big Bore Kit (93.4 cu. in.) Stock Stroke 1984 thru 1999 "Must use aftermarket engine case on models 1990 thru 1995" - Requires big bore sleeves #3035FA
9.5:1 Compression "Flat Top"
Wiseco Ring Package: Top Ring .047" - 2nd Ring .059" - Oil Ring .158"
DISPLACEMENT BORE SIZE STROKE PART# PRICE
1530cc 3.740"/STD 4.250" K1749 $259.87

















Twin Cams - 88 cubic inches - Stock Bore 3.750 - Stock Stroke 4.000
9.5:1 Compression
BORE DOME CCs PART# PRICE
3.750 9.5 M5011 Call or email for pricing.
3.760 9.5 M5012
3.780 9.5 M5013

10.5:1 Compression
BORE DOME CCs PART# PRICE
3.750 18.9 M5014 Call or email for pricing.
3.760 18.3 M5015
3.780 17.8 M5016

Twin Cams - 95 cubic inches - Stock Bore 3.875 - Stock Stroke 4.000
9:1 Compression
BORE DOME CCs PART# PRICE
3.875 F.T. -1.6 M5070 Call or email for pricing.

9.5:1 Compression
BORE DOME CCs PART# PRICE
3.875 4.6 M5017 Call or email for pricing.
3.880 4.6 M5018
3.885 4.6 M5019

10:1 Compression
BORE DOME CCs PART# PRICE
3.875 9.7 M5061 Call or email for pricing.
3.880 9.4 M5062
3.885 9 M5063

10.5:1 Compression
BORE DOME CCs PART# PRICE
3.875 14.5 M5020 Call or email for pricing.
3.880 14.5 M5021
3.885 14.5 M5022

Twin Cams - 103 cubic inches - Stock Bore 3.875 - Stock Stroke 4.375
9:1 Compression
BORE DOME CCs PART# PRICE
3.875 F.T. -1.6 M5064 Call or email for pricing.

10:1 Compression
BORE DOME CCs PART# PRICE
3.875 1.4 M5023 Call or email for pricing.
3.880 1.4 M5024
3.885 1.4 M5025

Twin Cams - 2007+ 96 inches - Stock Bore 3.750 - Stock Stroke 4.375
9.5:1 Compression
BORE DOME CCs PART# PRICE
3.760 8 M5086 Call or email for pricing.

Twin Cams - 2007+ 103 inches - Stock Bore 3.875 - Stock Stroke 4.375
10:1 Compression
BORE DOME CCs PART# PRICE
3.875 5.5 M5080 Call or email for pricing.
3.885 5.5 M5082 Call or email for pricing.

10:1 Compression
BORE DOME CCs PART# PRICE
3.875 10.5 M5083 Call or email for pricing.
3.885 10.5 M5085 Call or email for pricing.

Sportster XL (1988-2003) 1200cc - Stock Bore: 3.498 Stock Stroke: 3.812
9:1 Compression
BORE DOME CCs PART# PRICE
3.498 F.T. -1.4 M5026 Call or email for pricing.
3.503 F.T. -1.4 M5027
3.508 F.T. -1.4 M5028
3.518 F.T. -1.4 M5029
3.528 F.T. -1.4 M5030

10.5:1 Compression
BORE DOME CCs PART# PRICE
3.498 12.6 M5031 Call or email for pricing.
3.503 12.6 M5032
3.508 12.6 M5033
3.518 12.6 M5034
3.528 12.6 M5035

Sportster Conversion - 883-1200cc - Stock Bore: 3.498 - Stock Stroke: 3.812
9.5:1 Compression
BORE DOME CCs PART# PRICE
3.498 -9.4 M5036 Call or email for pricing.
3.760 -9.4 M5037
3.780 -9 M5038

Evolution - 1340cc - Stock Bore: 3.498 - Stock Stroke: 4.250
9.75:1 Compression
BORE DOME CCs PART# PRICE
3.498 12.1 M5000 Call or email for pricing.
3.500 12.1 M5001
3.503 12.1 M5002
3.505 12.1 M5003
3.508 12.1 M5004
3.510 12.1 M5005
3.518 12.1 M5006

10.5:1 Compression
BORE DOME CCs PART# PRICE
3.498 16.6 M5007 Call or email for pricing.
3.503 16.6 M5008
3.508 16.6 M5009
3.518 16.6 M5010

Top Fuel
BORE DESCRIPTION PART# PRICE
4.600 TOP FUEL 175IN 4.600 STD HDTF 4600 Call or email for pricing.
4.605 TOP FUEL 175IN 4.605 +.005 HDTF 4605
4.625 TOP FUEL 175IN 4.625 +.025 HDTF 4625
4.750 TOP FUEL 186IN 4.750 STD HDTF 4750
4.750 TOP FUEL 186IN 4.750 STD 1/16 TOP RING HDTF 4750-16
4.800 TOP FUEL 190IN 4.800 STD HDTF 4800
5.000 TOP FUEL 196IN 5.000 HDTF 5000

S&S Pro Stock
BORE DESCRIPTION PART# PRICE
4.625 PRO STOCK 120 IN 4.625 STD SSPS 4625 Call or email for pricing.
4.800 PRO STOCK 160 IN 4.800 STD SSPS 4800
4.805 PRO STOCK 160 IN 4.805 +.005 SSPS 4805



Call for pricing on individual JE pistons..














Twin Cam (1994-2004) - Stock Bore 3.750
10.25:1 Compression
DISPLACEMENT BORE PART# PRICE
1450cc 3.750 161932 $
1456cc 3.760 161933 $
1463cc 3.770 161934 $

Twin Cam (1994-2004) - Stock Bore 3.875
9:1 Compression
DISPLACEMENT BORE PART# PRICE
1546cc 3.875 222089 $258.73
1554cc 3.875 222088 $258.73
1592cc 3.875 222090 $

10.25 Compression
DISPLACEMENT BORE PART# PRICE
1546cc 3.875 161936 $266.48
1554cc 3.885 161935 $266.48

Twin Cam (1994-2004) - Stock Bore 4.000
10.25:1 Compression
DISPLACEMENT BORE PART# PRICE
1647cc 4.000 173395 $
1655cc 4.010 175008 $

883 Sportster Flat Track (1985-2004) Stock Bore: 3.000
Flat Top
DISPLACEMENT BORE PART# PRICE
889cc 3.010 151606 $

883/1200 Sportster Conversion Kit (1985-2004) Stock Bore:3.498
No head modification needed
9.5:1 Compression
DISPLACEMENT BORE PART# PRICE
1200cc 3.498 129856 $266.48
1205cc 3.503 129587 $
1208cc 3.508 136334 $
1214cc 3.518 136335 $
1222cc 3.528 136336 $

1200 Sportster (1984-2001) Stock Bore: 3.498
9:1 Compression
DISPLACEMENT BORE PART# PRICE
1200cc 3.498 133736 $
1205cc 3.503 133737 $270.28
1208cc 3.508 133738 $
1214cc 3.518 133739 $270.28
1222cc 3.528 133740 $

10.5:1 Compression
DISPLACEMENT BORE PART# PRICE
1200cc 3.498 132985 $
1205cc 3.503 132986 $279.17
1208cc 3.508 132987 $279.17
1214cc 3.518 132988 $
1222cc 3.528 132989 $

Evolution (1985-1999) Stock Bore: 3.498 - Stroke: 4.250
8.5:1 Compression
DISPLACEMENT BORE PART# PRICE
1340cc 3.498 125329 $
1342cc 3.503 124962 $
1345cc 3.508 126943 $257.99

9.5:1 Compression
DISPLACEMENT BORE PART# PRICE
1340cc 3.498 125330 $
1342cc 3.503 124846 $279.17
1345cc 3.508 124847 $279.17
1353cc 3.518 124848 $279.17
1361cc 3.528 124849 $

10:1 Compression
DISPLACEMENT BORE PART# PRICE
1340cc 3.498 133731 $279.17
1342cc 3.503 133732 $266.18
1345cc 3.508 133733 $279.17
1353cc 3.518 133734 $279.17
1361cc 3.528 133735 $

10.5:1 Compression
DISPLACEMENT BORE PART# PRICE
1340cc 3.498 134092 $
1342cc 3.503 134093 $266.48
1345cc 3.508 134094 $279.17
1353cc 3.518 134095 $279.17

Evolution (1985-1999) Stock Bore: 3.635
9.25:1 Compression
DISPLACEMENT BORE PART# PRICE
1437cc 3.625 161939 $
1441cc 3.630 161940 $
1446cc 3.635 161941 $257.99
1453cc 3.645 161942 $

10.25:1 Compression
DISPLACEMENT BORE PART# PRICE
1437cc 3.625 161943 $
1441cc 3.630 161944 $
1446cc 3.635 161945 $
1453cc 3.645 161946 $

Evolution (1985-1999) Stock Bore: 3.635 - Big Bore Kit 4 5/8" Stroke
9.5:1 Compression
DISPLACEMENT BORE PART# PRICE
1564cc 3.625 161947 $
1572cc 3.635 161948 $266.48

10:1 Compression
DISPLACEMENT BORE PART# PRICE
1730cc 3.8125 222168 $

Evolution Bathtub (1985-1999) - Fits STD Brand Heads Only - Stock Bore: 3.498

11:1 Compression
DISPLACEMENT BORE PART# PRICE
1342cc 3.508 144900 $

Evolution Bathtub (1985-1999) - Fits STD Brand Heads Only - Stock Bore: 3.625
11.5:1 Compression
DISPLACEMENT BORE PART# PRICE
1438cc 3.625 144902 $
1446cc 3.635 144903 $

Evolution Bathtub (1985-1999) - Fits STD Brand Heads Only - Stock Bore: 3.812
12:1 Compression
DISPLACEMENT BORE PART# PRICE
1590cc 3.812 144904 $
1599cc 3.812 144905 $

Buell S1, White Lightening-S3/S3T, Thunderbolt
101hp w/Thunderstorm Heads - Stock Bore: 3.498
10:1 Compression
DISPLACEMENT BORE PART# PRICE
1200cc 3.498 161949 $
1207cc 3.508 161950 $279.17
1214cc 3.518 161951 $
1221cc 3.528 161952 $

S&S 113" - Stock Bore: 4.000"
8.5 Compression
BORE NOTES PART# PRICE
4.000 STD - TURBO 197578 $
4.010 +.010 - TURBO 201154 $296.19