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Wiseco Piston Kit


Wiseco piston kit contain everything you need to complete your rebuild the right way, the first time. High-quality parts specifically chosen to match Wiseco forged piston that's included in this kit.

  • 2-stroke kit features Wiseco piston that is CNC machined for optimal cam shape and profile for peak power and long service life
  • 4-stroke kit feature a race-ready finish with smooth edges for improved combustion flow
  • Each piston is built from race proven designs that are chosen by the top race teams in all forms of racing
  • Horizontal slot-pin oiling reduces friction and provides scuff resistance, along with a pressure seal groove for maximum ring seal
  • Complete top end gasket kit gives you everything you need to complete your rebuild from premium materials
  • Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy
  • High-performance ring kit and alloy pin included with each piston kit for extended life and sustained power
  • Made in the USA
Specification Details
Bore Varies (make selection above)
Compression Ratio Varies (make selection above)
Country of Origin USA
Displacement Varies (make selection above)
Engine Type Varies (make selection above)
Finish Varies (make selection above)
Material Varies (make selection above)
Number of Pistons Included Varies (make selection above)
Piston Type Varies (make selection above)
Size Over Standard Varies (make selection above)
Stroke Varies (make selection above)
Volume Varies (make selection above)

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Arctic Cat
  • 650 V2 4x4 Auto 2004-2006
  • CF6 EFI 2009-2011
  • CF8 2010-2011
  • F6 2007-2008
  • F6 Sno Pro 2009-2011
  • F8 2009-2010
  • M 800 2012-2013
  • M 8000 2014-2017
  • M8 2010-2011
  • XF 8000 Crosstour 2014-2015
  • XF 8000 High Country 2015-2016
  • ZR 8000 2014-2017
  • ZR 8000 LXR 2014-2015
  • ZR 8000 Sno Pro 2014-2015
BMW
  • S 1000 R Naked 2014
  • S 1000 RR 2010-2014
  • S 1000 RR HP4 2013-2014
Harley Davidson
  • FLD Dyna Switchback 2012-2016
  • FLHR Road King 1999-2016
  • FLHRC Road King Classic 2007-2013
  • FLHRCI Road King Classic 1999-2006
  • FLHRI Road King 1999-2006
  • FLHRS Road King Custom 2004-2007
  • FLHRSI Road King Custom 2004-2006
  • FLHT Electra Glide Standard 1999-2009
  • FLHTC Electra Glide Classic 1999-2005, 2007-2013
  • FLHTCI Electra Glide Classic 1999-2006
  • FLHTCU Ultra Classic Electra Glide 1999-2014
  • FLHTCUI Ultra Classic Electra Glide 1999-2006
  • FLHTCUL Electra Glide Ultra Classic Low 2015-2016
  • FLHTCUTG Tri Glide Ultra Classic 2009-2014
  • FLHTI Electra Glide Standard 2003-2006
  • FLHTK Electra Glide Ultra Limited 2010-2014
  • FLHX Street Glide 2006-2016
  • FLHXI Street Glide 2006
  • FLHXS Street Glide Special 2014-2016
  • FLHXXX Street Glide Trike 2010-2011
  • FLRT Freewheeler 2015-2016
  • FLS Softail Slim 2012-2017
  • FLSS Softail Slim S 2016-2017
  • FLST Heritage Softail 2006
  • FLSTC Heritage Softail Classic 2000-2014
  • FLSTCI Heritage Softail Classic 2001-2006
  • FLSTF Softail Fat Boy 2000-2014
  • FLSTFB Softail Fat Boy Lo 2010-2016
  • FLSTFBS Softail Fat Boy S 2016-2017
  • FLSTFI Softail Fat Boy 2001-2006
  • FLSTI Heritage Softail 2006
  • FLSTN Softail Deluxe 2005-2014
  • FLSTNI Softail Deluxe 2005-2006
  • FLSTS Heritage Springer Softail 2000-2003
  • FLSTSB Softail Cross Bones 2008-2011
  • FLSTSC Softail Springer Classic 2005-2007
  • FLSTSCI Softail Springer Classic 2005-2006
  • FLSTSI Heritage Springer Softail 2001-2003
  • FLTR Road Glide 1999-2004, 2007-2009
  • FLTRI Road Glide 2000-2006
  • FLTRU Road Glide Ultra 2011-2013
  • FLTRX Road Glide Custom 2010-2013
  • FLTRXS Road Glide Special 2015-2016
  • FXCW Softail Rocker 2008-2009
  • FXCWC Softail Rocker C 2008-2011
  • FXD Dyna Super Glide 1999-2005, 2007-2010
  • FXDB Dyna Street Bob 2007-2017
  • FXDBI Dyna Street Bob 2006
  • FXDBP Dyna Street Bob Custom 2013-2014
  • FXDC Dyna Super Glide Custom 2005, 2007-2014
  • FXDCI Dyna Super Glide Custom 2005-2006
  • FXDF Dyna Fat Bob 2008-2017
  • FXDI Dyna Super Glide 2004-2006
  • FXDI35 35th Anniversary Dyna Super Glide 2006
  • FXDL Dyna Low Rider 1999-2005, 2007-2009, 2014
  • FXDLI Dyna Low Rider 2004-2006
  • FXDLS Dyna Low Rider S 2016-2017
  • FXDS-CONV Dyna Convertible 1999-2000
  • FXDWG Dyna Wide Glide 1999-2005, 2007-2008, 2010-2014
  • FXDWGI Dyna Wide Glide 2004-2006
  • FXDX Dyna Super Glide Sport 1999-2005
  • FXDXI Dyna Super Glide Sport 2004-2005
  • FXDXT Dyna Super Glide T-Sport 2001-2003
  • FXS Softail Blackline 2011-2013
  • FXSB Softail Breakout 2013-2017
  • FXST Softail Standard 2000-2009
  • FXSTB Softail Night Train 2000-2009
  • FXSTBI Softail Night Train 2001-2006
  • FXSTC Softail Custom 2007-2010
  • FXSTD Softail Deuce 2000-2007
  • FXSTDI Softail Deuce 2001-2006
  • FXSTI Softail Standard 2001-2006
  • FXSTS Springer Softail 2000-2006
  • FXSTSI Springer Softail 2001-2006
Honda
  • ATC185 1980
  • ATC185S 1981-1983
  • ATC200 1981-1983
  • ATC200E Big Red 1982-1983
  • ATC200ES Big Red 1984
  • ATC200M 1984-1985
  • ATC200S 1984-1986
  • ATC200X 1983-1985
  • ATC350X 1985-1986
  • CB500F 2013-2018
  • CB500F ABS 2013-2018
  • CB500X 2013-2018
  • CB500X ABS 2013-2018
  • CB750C 750 Custom 1980-1982
  • CB750F 750 Super Sport 1975-1982
  • CB750K 750 Four 1969-1982
  • CB750L Limited 1979
  • CB750SC Nighthawk 750 1982
  • CBR500R 2013-2018
  • CBR500R ABS 2013-2018
  • CBR600RR 2007-2024
  • CBR600RR ABS 2010-2024
  • CMX500 Rebel 500 2017-2018
  • CMX500 Rebel 500 ABS 2017-2018
  • CR250R 2-Stroke 2005-2007
  • CR250R Elsinore 1978-1980
  • CR480R 1982-1983
  • CR500R 1984
  • CRF100F 2004-2009, 2011-2012
  • CRF150R 2007-2009, 2013-2021
  • CRF150R Expert 2007-2009
  • CRF250R 4-Stroke 2004-2007, 2010-2019
  • CRF250X 4-Stroke 2004-2009, 2012-2017
  • CRF450R 2002-2016
  • CRF450X 2005-2009, 2012-2017
  • CRF50F 2004-2009, 2011-2019
  • CRF70F 2004-2009, 2011-2012
  • CRF80F 2004-2009, 2011-2013
  • TRX200 FourTrax 200 2x4 1984
  • TRX250EX Sportrax 250 2x4 2001-2008
  • TRX250X FourTrax 250X 1987-1988, 1991-1992
  • TRX300 FourTrax 300 2x4 1988-2000
  • TRX300EX FourTrax 300EX 1993-2000, 2004-2007
  • TRX300EX Sportrax 300EX 2001-2003, 2008
  • TRX300FW FourTrax 300 4x4 1988, 1990-2000
  • TRX350D FourTrax Foreman 4x4 1987-1989
  • TRX350FE FourTrax Rancher ES 4x4 2000-2006
  • TRX350FM FourTrax Rancher 4x4 2000-2006
  • TRX350TE FourTrax Rancher ES 2x4 2000-2006
  • TRX350TM FourTrax Rancher 2x4 2000-2006
  • TRX400EX FourTrax 400EX 1999
  • TRX400EX Sportrax 400EX 2000-2008
  • TRX400X Sportrax 400X 2009, 2012-2014
  • TRX450ER Sportrax 450ER 2006-2009, 2012-2014
  • TRX450ES FourTrax Foreman ES 4x4 1998-2001
  • TRX450FE FourTrax Foreman ES 4x4 2002-2004
  • TRX450FM FourTrax Foreman S 4x4 2002-2004
  • TRX450R Sportrax 450R 2004-2009, 2012
  • TRX450S FourTrax Foreman S 4x4 1998-2001
  • XL100S 1979-1985
  • XR100 1981-1984
  • XR100R 1985-2003
  • XR185 1979
  • XR200 1980-1983
  • XR200R 1981-1983, 1986-2002
  • XR250L 1991-1996
  • XR250R 1986-2004
  • XR400R 1996-2004
  • XR50R 2000-2003
  • XR650L 1993-2020
  • XR70R 1997-2003
  • XR80 1979-1984
  • XR80R 1985-1988, 1990-1991, 1993-2003
Husaberg
  • FE 250 2014
  • FE 350 2013-2014
  • FE 450 2013-2014
  • FE 501 2013-2014
  • TE 300 2013-2014
Husqvarna
  • FC 250 2014-2022
  • FC 350 2014-2015
  • FC 450 2014-2015
  • FE 250 2014-2017
  • FE 350 2014-2016
  • FE 450 2014-2016
  • FE 501 2014-2016
  • FS 450 2015
  • TC 85 2014-2017
  • TE 300 2014-2016
KTM
  • 105 SX 2004, 2006-2011
  • 125 SX 2001
  • 250 EXC-F 2015
  • 250 SX-F 2006-2022
  • 250 XC-F 2007-2014, 2016-2022
  • 250 XCF-W 2006-2014
  • 300 EXC 2005, 2015
  • 300 MXC 2005
  • 300 XC 2006-2016
  • 300 XC-W 2006-2016
  • 350 EXC-F 2012-2016
  • 350 SX-F 2011-2015
  • 350 XC-F 2012-2016
  • 350 XCF-W 2012-2015
  • 450 EXC 2007
  • 450 EXC-G Racing 2003-2006
  • 450 EXC-R 2007
  • 450 MXC-G Racing 2003-2005
  • 450 SX-F 2013-2015
  • 450 XC ATV 2008-2009
  • 450 XC-F 2013-2016
  • 450 XC-W 2007, 2012-2016
  • 500 EXC 2012-2016
  • 500 XC-W 2012-2016
  • 520 EXC-G Racing 2002
  • 520 SX Racing 2000-2002
  • 525 EXC 2007
  • 525 EXC-G Racing 2003-2006
  • 525 SX 2006
  • 525 SX Racing 2003-2005
  • 525 XC ATV 2008-2009
  • 65 SX 1999-2008
  • 65 XC 2008
  • 85 SX 2003-2017
  • 85 XC 2008-2009
Kawasaki
  • Bayou 220 2x4 1988-2002
  • Bayou 300 2x4 1986-2003
  • Bayou 300 4x4 1989-2003
  • Brute Force 650 4x4 2005-2010
  • Brute Force 650 4x4i 2006-2009
  • Brute Force 750 4x4i 2005-2011
  • GPz 1100 1995-1997
  • GPz 750 1982-1985
  • KDX250 1983-1984
  • KDX50 2003-2006
  • KFX400 2003-2006
  • KFX450R 2008-2014
  • KFX50 ATV 2003-2006
  • KFX700 V-Force 2004-2009
  • KFX80 ATV 2003-2006
  • KLR250 1987-2005
  • KLX400R 2003
  • KLX450R 2008-2009
  • KX100 1995-2009, 2011-2021
  • KX250 2-Stroke 1983-1984
  • KX250 4-Stroke 2019
  • KX250F 4-Stroke 2004-2009, 2011-2018
  • KX450F 2006-2014
  • KX500 1991-2004
  • KX60 1983-1988, 1990-2003
  • KX65 2000-2021
  • KX85 2001-2021
  • KZ1000A 1977-1978
  • KZ1000A MKII 1979-1980
  • KZ1000B 1000 LTD 1977-1980
  • KZ1000C Police 1000 1978-1980
  • KZ1000D Z1R 1978, 1980
  • KZ1000E 1000 Shaft 1979-1980
  • KZ1000G Z1 Classic 1980
  • KZ1000J 1000 Standard 1981-1983
  • KZ1000R Eddie Lawson Replica 1982-1983
  • KZ650B 1977-1979
  • KZ650C Custom 1977-1979
  • KZ650D SR 1978-1979
  • KZ650E LTD 1980
  • KZ650F Custom 1980
  • KZ750E Standard-4 1980-1982
  • KZ750F LTD Shaft 1983
  • KZ750G LTD Twin 1980
  • KZ750H LTD-4 1980-1983
  • KZ750K LTD Belt 1983-1984
  • KZ750L Sports 1983
  • KZ750M CSR Twin 1982
  • KZ750N Spectre 1982-1983
  • KZ900A 1976-1977
  • KZ900B LTD 1976
  • Lakota 300 2x4 1995-2003
  • Mojave 250 2x4 1987-2004
  • Ninja ZX-11 1990-2001
  • Ninja ZX-14R 2006-2016
  • Ninja ZX-14R ABS 2013-2015
  • Ninja ZX-6R 2007-2018
  • Ninja ZX-6R ABS 2013-2018
  • Prairie 300 2x4 1999-2002
  • Prairie 300 4x4 1999-2002
  • Prairie 650 4x4 2002-2003
  • Prairie 700 4x4 2004-2006
  • Teryx 750 4x4 2008
  • Z1 900 Super Four 1973-1975
  • ZRX1100 1999-2000
Polaris
  • 700 Classic 2006
  • 700 Dragon 2007
  • 700 Fusion 2006
  • 700 RMK 2005-2006, 2008-2010
  • 700 Touring 2006
  • 800 RMK 2010-2014
  • 800 RMK Assault 2010
  • 800 RMK Dragon 2010
  • 800 Rush 2013
  • 900 Fusion 2005-2006
  • 900 RMK 2005-2006
  • 900 Switchback 2005-2006
  • ATP 500 4x4 2004-2005
  • Big Boss 500 6x6 1998
  • Magnum 500 2x4 2002
  • Magnum 500 4x4 1999-2002
  • Outlaw 500 2006-2007
  • Outlaw 525 2007
  • Outlaw 525 IRS 2008-2011
  • Outlaw 525 S 2008-2010
  • Predator 500 2003-2007
  • RZR 4 800 2012
  • RZR 800 2008-2014
  • RZR S 800 2009-2010
  • Ranger 500 2x4 2004-2009
  • Ranger 500 4x4 2004-2007
  • Ranger 500 4x4 EFI 2006-2007
  • Ranger 500 6x6 2004-2005
  • Scrambler 250 1985-1986
  • Scrambler 400 4x4 1995-1996, 1998-2000, 2002
  • Scrambler 400L 4x4 1997
  • Scrambler 500 2x4 2001-2002, 2007-2009
  • Scrambler 500 4x4 1997-2012
  • Sport 400 1999
  • Sportsman 400 1994-1997, 2001-2003
  • Sportsman 500 4x4 1996-2006
  • Sportsman 500 6x6 2000-2008
  • Sportsman 500 EFI 2006-2008
  • Sportsman 500 Forest Tractor 2010-2012
  • Sportsman 800 Big Boss 6x6 2012
  • Sportsman 800 EFI 2005-2008, 2011-2012
  • Sportsman MV 800 2007
  • Sportsman Touring 500 2008-2009
  • Sportsman Touring 800 EFI 2008-2009
  • Storm 1994-1998
  • Storm RMK 1996-1997
  • Storm SKS 1994-1996
  • Trail Blazer 250 1990-2006
  • Trail Blazer 250 ES 1996
  • Trail Blazer 400 2003
  • Trail Boss 250 2x4 1986-1999
  • Trail Boss 250 4x4 1987-1992
  • Trail Boss 350L 2x4 1990-1993
  • Trail Boss 350L 4x4 1990-1992
  • Xplorer 400L 1996-1998
  • Xplorer 500 1997
Ski-Doo
  • Expedition 1200 2010-2016
  • Expedition Sport 550 2005-2008
  • Formula MX 1990-1995
  • Formula MX LT 1990
  • Formula MX XTC 1991
  • Formula MX XTC R 1992-1993
  • Formula MX Z 1993-1994
  • Formula SS 1985
  • Formula ST 1994
  • Freestyle Backcountry 2007-2008
  • Freestyle Park 2007-2008
  • Freestyle Session 550 2007
  • GSX 1200 2009-2015
  • GTX 1200 2009
  • GTX 380 Fan 2005-2006
  • GTX 550 Fan 2005-2008
  • Grand Touring 1200 2010-2016
  • Grand Touring 550 Fan 2003
  • Legend 550 Fan 2004
  • MXZ 1200 2009-2016
  • MXZ 600 2009-2017
  • MXZ Adrenaline 1200 2010
  • MXZ Adrenaline 800 2007
  • MXZ Adrenaline 800R 2008
  • MXZ Blizzard 1200 2016
  • MXZ Renegade 1000 2007
  • MXZ Renegade 1200 2009
  • MXZ Renegade 800 2007
  • MXZ Renegade 800R 2008
  • MXZ TNT 1200 2009-2016
  • MXZ TNT 800R Power T.E.K. 2011
  • MXZ X-RS 600 2010
  • Mach Z Adrenaline 2005
  • Mach Z Adrenaline 1000 2006-2007
  • Renegade 1200 2010-2016
  • Renegade Adrenaline 1200 2010-2014, 2016
  • Renegade Adrenaline 800R E-TEC 2012-2016
  • Renegade Adrenaline 800R Power T.E.K. 2010-2011
  • Renegade Backcountry 800R E-TEC 2012-2016
  • Renegade Backcountry 800R Power T.E.K. 2010-2011
  • Renegade Enduro 1200 2016
  • Safari GLX 1990
  • Skandic SUV 550 2004-2008
  • Skandic SWT 550 2004-2008
  • Skandic Tundra LT 550 2008
  • Skandic WT 550 2004-2008
  • Summit 550 Fan 2003-2008
  • Summit Everest 800R Power T.E.K. 2008-2011
  • Summit Highmark 1000 2005-2007
  • Summit X-RS 800R 2007
  • Tundra 550 2012-2013
Suzuki
  • DR-Z400 2000-2004
  • DR-Z400S 2000-2009, 2011-2021
  • DR-Z400SM 2005-2009, 2013-2021
  • DR350 1990-1999
  • GS1000 1978-1979
  • GS1000E 1980
  • GS1000G 1980-1981
  • GS1000GL 1980-1981
  • GS1000L 1979
  • GS1000S Katana 1979-1980
  • GSX-R1100 1989-1992
  • GSX-R750 1986-1987
  • GSX1100F Katana 1100 1988-1992
  • GSX1300R Hayabusa 1999-2007
  • JR50 1978-2006
  • LT-4WD QuadRunner 250 1987-1995
  • LT-F250 QuadRunner 250 2x4 1989-1996
  • LT-R450 QuadRacer 450 2006-2011
  • LT-V700F Twin Peaks 700 4x4 2004-2005
  • LT-Z400 QuadSport 400 2003-2009, 2012-2014
  • LT230S QuadSport 230 1985-1988
  • LT250R QuadRacer 250 1985-1986
  • LT50 QuadRunner 50 1984-1987
  • LT80 QuadSport 80 1987-2006
  • RM-Z250 2004-2018
  • RM-Z450 2005-2024
  • RM100 2003
  • RM250 2001-2008
  • RM60 2003
  • RM65 2003-2005
  • RM80 1991-2001
  • RMX450Z 2010-2011, 2017-2019
Triumph
  • America 2002-2007
  • Bonneville T100 2002-2007
  • Speedmaster 2003
Yamaha
  • Apex 2006-2008, 2010
  • Apex GT 2008-2010
  • Apex L-TX 2008
  • Attak 2006-2007
  • BW80 Big Wheel 1986-1988, 1990
  • Bear Tracker 2x4 2000-2004
  • Big Bear 250 2007-2009
  • Big Bear 350 4x4 1989-1999
  • Big Bear 400 2x4 2000-2004
  • Big Bear 400 4x4 2000-2005
  • FZR1000 1989-1995
  • Grizzly 600 4x4 1998-2001
  • Grizzly 660 4x4 2002-2008
  • Grizzly 700 4x4 2007-2011
  • Grizzly 80 2005-2008
  • Kodiak 400 4x4 1993-1999
  • Nytro 2006
  • PW50 Y-Zinger 1981-1983, 1985-1987, 1990-2022
  • PW80 Y-Zinger 1991-2006
  • RS Rage 2005-2007
  • RS Vector 2005-2007
  • RX Warrior 2004-2005
  • RX-1 2003-2005
  • RX-1 Mountain 2003-2005
  • Raptor 350 2005-2013
  • Raptor 660R 2001-2005
  • Raptor 700 2013-2014
  • Raptor 700R 2006-2014
  • Raptor 80 2002-2008
  • Rhino 660 4x4 2005-2007
  • Rhino 700 FI 4x4 2008-2009
  • SS440 1980-1985
  • TT-R125 2000-2005
  • WR250F 2001-2013, 2015-2019
  • WR426F 2001-2002
  • WR450F 2003-2018
  • YFB250 Timberwolf 2x4 1992-1996
  • YFB250FW Timberwolf 4x4 1994-1995, 1997-2000
  • YFM350X Warrior 1987-2004
  • YFM80 Badger 1992-2001
  • YFZ450 ATV 2004-2009
  • YZ250F 4-Stroke 2001-2018
  • YZ250FX 4-Stroke 2015-2019
  • YZ426F 2000-2002
  • YZ450F 2003-2019
  • YZ450FX 2016-2019
  • YZ80 1986-1987
  • YZF-1000R 1997
  • YZF-R1 1998

Customer Reviews

Write Review

Great

By   on  Verified Purchaser

Great fitment, bike runs great.


Great kit

By   on  Verified Purchaser

Great kit. Huge power upgrade.


Wiseco piston

By   on  Verified Purchaser

Perfect fit with more power.


100% Quality

By   on  Verified Purchaser

Wiseco always makes a great quality product. Ive used them many times over the years an never had failures. Failures mostly happen due to lack of preventive mat. Nothing last forever!


Thanks

By   on  Verified Purchaser

Worked great.


Wiseco Piston

By   on  Verified Purchaser

Excellent part.


Awesome parts!

By   on  Verified Purchaser

I ordered this piston kit and an Athena Cylinder as well. All parts were correct, well priced, and arrived in good shape ready to go on.


Great product

By   on  Verified Purchaser

5 stars


Wiseco Piston Kit

By   on  Verified Purchaser

5 stars


Perfect fit

By   on  Verified Purchaser

Perfect fit, correct size rings came with it, and gaskets were a perfect fit, and the wrist pin was pristine.


Great product

By   on  Verified Purchaser

Great product! Great price! Thank you!


Got it for the Polaris 250 I had bored .50 over

By   on  Verified Purchaser

I never write reviews but then again I've never been this satisfied with service. I ordered it Thursday got it Saturday kids were riding Sunday! Honestly super impressed by how fast it got here, it was in great shape and fit like a glove.


Love the part

By   on  Verified Purchaser

Awesome, thanks.


Wiseco Piston Kit

By   on  Verified Purchaser

Part was exactly what we ordered.


She’s a ripper!

By   on  Verified Purchaser

I’ve put about 30 hours of hard riding on this and it’s been holding up well! I highly recommend it. Just be sure to fully warm up your engine before doing anything hard on the engine.


Great quality and value

By   on  Verified Purchaser

Very impressed with the design of the pistons, added oil ports in the ring grooves, the machining is high quality, the detailed packaging show how much pride they take in their work.


Wiseco Piston

By   on  Verified Purchaser

5 Stars


Awesome piston and preforms perfectly.

By   on  Verified Purchaser

Very high quality piston just like you would expect from Wiseco. Shipped quickly and very well packaged. Yamaha Bigbear 350 is running better than it ever has after a top end rebuild and a carb kit. Honed out the OEM cylinder and ring gap was .018 with the rings sent. Specs said 16-20 so right in the middle. Very clear instructions on checking gap and positioning ring gaps on piston. 93 Octane and thing is way snappier on tip-in than it ever has been. Totally satisfied with Wiesco on this one.


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Questions & Answers

Ask Question

Will this fit my 92 trail boss 250 2x4

?

So long as you have chosen a 1992 Polaris Trail Boss 250 2X4 and you have a stock bore size cylinder, you should have no problem with fitment.

By Andy
Answer Question

Will this fit a 1990 Honda xr200r

Yes, just be sure of what size bore your cylinder is before ordering.

By Andy
Answer Question

Would this fit a 96 xr200r with a 65.5mm bore

I believe that bike came with a 65.5mm bore from the factory, so you would just need to choose stock size before adding to your cart.

By Andy
Answer Question

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