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OEM & Performance ATV, UTV & Dirt Bike Parts for Yamaha, Honda, Polaris, Can-Am & More — Shipped Fast from BPRATV
OEM & Performance ATV, UTV & Dirt Bike Parts for Yamaha, Honda, Polaris, Can-Am & More — Shipped Fast from BPRATV

Honda TRX400EX

Honda 400EX Rebuild Kits, Pistons, and Parts

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05-14 400EX 400 EX 88mm Simple Rebuild Kit Wiseco Piston Complete Gaskets Seals

BPRATV

WPC131A, 4606M08800, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

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$699.98

TRX 400EX 88mm +3 Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit 99-04

Wiseco

WPC131A, 4606M08800, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

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$1,009.99
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$699.98
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$699.98

99-04 Honda TRX400EX 88mm 426 Big Bore Cylinder Wiseco Piston Engine Rebuild Kit

BPRATV

WPC131A, 4606M08800, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

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$999.99
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$999.99
$648.88
$648.88 - $648.88
$648.88

05+ Honda TRX400EX 85mm OEM Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit

Wiseco

WPC131B, 4606M08500, C7825, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$999.99
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$999.99
$648.88
$648.88 - $648.88
$648.88

TRX 400EX 400X 85mm OEM Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit 05+

Wiseco

WPC131B, 4606M08500, C7825, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$648.88
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$999.99
$999.99 - $999.99
$999.99
$648.88
$648.88 - $648.88
$648.88

05+ Honda 400EX 400X 85mm Stock Bore Cylinder & Wiseco Piston Engine Rebuild Kit

Wiseco

WPC131B, 4606M08500, C7825, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$648.88
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$1,019.99
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$1,019.99
$729.98
$729.98 - $729.98
$729.98

05+ Honda 400EX 400X 89mm 440 Big Bore Cylinder Wiseco Piston Engine Rebuild Kit

Wiseco

WPC131B, 4667M08900, C7826, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$729.98
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$729.98
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$1,019.99
$1,019.99 - $1,019.99
$1,019.99
$729.98
$729.98 - $729.98
$729.98

05+ Honda TRX400EX 89mm Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit

Wiseco

WPC131B, 4667M08900, C7826, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$729.98
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$729.98
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$1,019.99
$1,019.99 - $1,019.99
$1,019.99
$729.98
$729.98 - $729.98
$729.98

TRX 400EX 400X 89mm Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit 05+

Wiseco

WPC131B, 4667M08900, C7826, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$1,019.99
$729.98
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$729.98
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$1,009.99
$1,009.99 - $1,009.99
$1,009.99
$719.98
$719.98 - $719.98
$719.98

TRX 400EX 400X 88mm Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit 05+

Wiseco

WPC131B, 4606M08800, C7826, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$1,009.99
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$1,009.99
$719.98
$719.98 - $719.98
$719.98
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$1,009.99
$1,009.99 - $1,009.99
$1,009.99
$719.98
$719.98 - $719.98
$719.98

05+ Honda TRX400EX 88mm Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit

Wiseco

WPC131B, 4606M08800, C7826, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$1,009.99
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$1,009.99
$719.98
$719.98 - $719.98
$719.98
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$1,009.99
$1,009.99 - $1,009.99
$1,009.99
$719.98
$719.98 - $719.98
$719.98

05+ Honda 400EX 400X 88mm 426 Big Bore Cylinder Wiseco Piston Engine Rebuild Kit

Wiseco

WPC131B, 4606M08800, C7826, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$1,009.99
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$1,009.99
$719.98
$719.98 - $719.98
$719.98
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$1,009.99
$1,009.99 - $1,009.99
$1,009.99
$699.98
$699.98 - $699.98
$699.98

TRX 400EX 400X 87mm Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit 05+

Wiseco

WPC131B, 4606M08700, C7826, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$1,009.99
$699.98
$699.98 - $699.98
$699.98
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$1,009.99
$1,009.99 - $1,009.99
$1,009.99
$699.98
$699.98 - $699.98
$699.98

05+ Honda TRX400EX 87mm Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit

Wiseco

WPC131B, 4606M08700, C7826, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$1,009.99
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$1,009.99
$699.98
$699.98 - $699.98
$699.98
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$1,009.99
$1,009.99 - $1,009.99
$1,009.99
$699.98
$699.98 - $699.98
$699.98

05+ Honda 400EX 400X 87mm 416 Big Bore Cylinder Wiseco Piston Engine Rebuild Kit

Wiseco

WPC131B, 4606M08700, C7826, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673...

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$699.98
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$1,419.99
$1,419.99 - $1,419.99
$1,419.99
$1,199.99
$1,199.99 - $1,199.99
$1,199.99

05+ Honda TRX 400EX 400X 89m Big Bore 4mm Stroker Complete 465 Motor Rebuild Kit

BPRATV

4240,CBK0037,CBK0163,808894,TBK0012,K014, 12100-KCY-670, 4606M08500, C7826, 71016-412191-KCY-673, 13011-KCY-670, 90601-KA5-00013103-KCY-670, 13111-...

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$1,419.99
$1,199.99
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$1,199.99
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$257.75
$257.75 - $257.75
$257.75
$188.88
$188.88 - $188.88
$188.88

Honda 400EX 400X Wiseco 85mm Stock Bore 10:1 Piston Cometic Top End Gasket Kit

Wiseco

12100-KCY-670, 4606M08500, C7825, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, PK1031Brand New Wiseco ...

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$257.75
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$257.75
$188.88
$188.88 - $188.88
$188.88
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$257.75
$257.75 - $257.75
$257.75
$188.88
$188.88 - $188.88
$188.88

Honda TRX 400EX 400X XR400 Wiseco 85mm10:1 Piston Kit Cometic Top End Gasket Kit

Wiseco

12100-KCY-670, 4606M08500, C7825, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, PK1031Brand New Wiseco ...

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$257.75
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$257.75
$188.88
$188.88 - $188.88
$188.88
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$499.99
$499.99 - $499.99
$499.99
$418.88
$418.88 - $418.88
$418.88

TRX 400EX TRX400EX 400X 88mm 88 426cc Big Bore Cylinder 11:1 Top End Rebuild Kit

BPRATV

1043-2, M2008, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

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$499.99
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$499.99
$418.88
$418.88 - $418.88
$418.88
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$314.99
$314.99 - $314.99
$314.99
$219.89
$219.89 - $219.89
$219.89

Honda 400EX 400X Wiseco 89mm BIG BORE 11:1 Piston COMETIC Top End Gasket Kit MLS

Wiseco

Honda TRX 400EX 440cc Wiseco 89mm Big Bore 11:1 Compression Piston & Cometic Top End Gasket KitFits Honda TRX 400EX & 400XYears 1999 2000 2...

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$314.99
$314.99 - $314.99
$314.99
$219.89
$219.89 - $219.89
$219.89
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$259.99
$259.99 - $259.99
$259.99
$189.97
$189.97 - $189.97
$189.97

Honda 400EX 400X Wiseco 85mm Stock Bore 10:1 Piston COMETIC Top End Gasket Kit

Wiseco

Wiseco 85mm Stock Bore 10:1 Compression Piston & Cometic Top End Gasket KitFits Honda TRX 400EX & 400XYears 1999 2000 2001 2002 2003 2004 2...

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$259.99
$259.99 - $259.99
$259.99
$189.97
$189.97 - $189.97
$189.97
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$999.99
$999.99 - $999.99
$999.99
$874.99
$874.99 - $874.99
$874.99

TRX 400EX 400X 88mm Big Bore Kit Stage 3 Cam Kibblewhite Valves Springs Hotcam

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW after market 88mm cylinder Wiseco or JE forged piston** Nitrite coated piston rings ...

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$999.99
$999.99 - $999.99
$999.99
$874.99
$874.99 - $874.99
$874.99
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$1,000.99
$1,000.99 - $1,000.99
$1,000.99
$899.99
$899.99 - $899.99
$899.99

TRX 400EX TRX 400EX 88mm Big Bore Stage 2 Cam +1 Valves +3 Cylinder Hotcams KPMI

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW after market 88mm cylinder Wiseco or JE forged piston* Nitrite coated piston rings C...

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$1,000.99
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$1,000.99
$899.99
$899.99 - $899.99
$899.99
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$1,129.99
$1,129.99 - $1,129.99
$1,129.99
$789.99
$789.99 - $789.99
$789.99

99-04 400EX 400 EX 88mm Simple Rebuild Kit Wiseco Piston Complete Gaskets Seals

Hot Rods

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 88mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$789.99 - $789.99
$789.99
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$999.99 - $999.99
$999.99
$1,718.99
$1,718.99 - $1,718.99
$1,718.99

05-14 400EX 400 EX 87mm Simple Rebuild Kit Wossner Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 87mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$999.99 - $999.99
$999.99
$1,718.99
$1,718.99 - $1,718.99
$1,718.99
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$23.69 - $23.69
$23.69
$23.69 - $23.69
$23.69

05-08 Honda Sportrax TRX 400EX 09-14 400X Vertex Complete Engine Seal Kit 822278

Vertex

Fits 05-08 Honda Sportrax 400 EX / TRX 09-14 400X Models  Vertex Engine Complete Oil Seal Kit Set Includes: Crankshaft Output Shaft Water Pump ...

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$23.69 - $23.69
$23.69
$23.69 - $23.69
$23.69
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$23.88 - $23.88
$23.88
$23.88 - $23.88
$23.88

Honda Sportrax 400EX TRX 400EX 400X Stock Bore 85mm 10:1 Aftermarket Piston Kit

BPRATV

FITS ALL HONDA SPORTRAX TRX 400EX YEARS AND MODELS!!Standard Aftermarket 85mm 10:1 pistonPiston ringsWristpinCirclipsFits all 85mm 400EX cylinders

$23.88 - $23.88
$23.88
$23.88 - $23.88
$23.88
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$699.99 - $699.99
$699.99
$699.99 - $699.99
$699.99

TRX 400EX 400X XR 88m Big Bore Kit Stage 3 Hotcam Hot Cam +3 Top End Rebuild Kit

BPRATV

Compatible Vehicles Submodel Year Make Model TRX400EX 2x4 2008 Honda Sportrax 400 TRX400EX 2x4 2007 Honda Sportrax 400 TRX400EX 2x4 20...

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$699.99 - $699.99
$699.99
$699.99 - $699.99
$699.99
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$1,099.99 - $1,099.99
$1,099.99
$1,099.99 - $1,099.99
$1,099.99

Honda 400EX 400X 88mm Rebuild Kit Top Bottom Big Bore Motor Engine Assembly 426c

BPRATV

WORKS ON ALL 2005+ HONDA 400EX AND 400X MODELS Aftermarket 88mm big bore cylinder 88mm big bore Wiseco JE or CP forged piston* Nitrite coated pisto...

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$1,099.99 - $1,099.99
$1,099.99
$1,099.99 - $1,099.99
$1,099.99
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$775.00 - $775.00
$775.00
$775.00 - $775.00
$775.00

TRX 400EX 400X XR 88m Big Bore Stage 3 Hotcam Valve Springs +3 Top End Kit 426cc

BPRATV

Compatible Vehicles Submodel Year Make Model TRX400EX 2x4 2008 Honda Sportrax 400 TRX400EX 2x4 2007 Honda Sportrax 400 TRX400EX 2x4 20...

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$775.00 - $775.00
$775.00
$775.00 - $775.00
$775.00
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$49.99
$49.99 - $49.99
$49.99
$23.99
$23.99 - $23.99
$23.99

Honda Sportrax 400 TRX400EX TRX 400X XR400R Big Bore 89mm Aftermarket Piston Kit

BPRATV

FITS ALL HONDA SPORTRAX TRX 400EX YEARS AND MODELS!!Big Bore Aftermarket 89mm 10:1 pistonPiston ringsWristpinCirclipsFits all 89mm 400EX Cylinders

$49.99
$49.99 - $49.99
$49.99
$23.99
$23.99 - $23.99
$23.99
Sold out
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$1,799.99
$1,799.99 - $1,799.99
$1,799.99
$1,699.99
$1,699.99 - $1,699.99
$1,699.99

99-04 400EX 88mm Big Bore Rebuild Kit Top Bottom End Motor Engine Repair Redo

BPRATV

Works on all '99-04 Honda 400EX models 88mm big bore cylinder 88mm 10:1 big bore Wiseco or Wossner forged piston Nitrite-coated piston rings Chro...

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$1,799.99
$1,799.99 - $1,799.99
$1,799.99
$1,699.99
$1,699.99 - $1,699.99
$1,699.99
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$165.97 - $165.97
$165.97
$165.97 - $165.97
$165.97

Honda 400EX 400X +1mm Over Piston Wiseco 4606M08600 86mm Piston Top End Gaskets

BPRATV

Works on all Honda 400EX, 400X, and XR400R models and years Wiseco 86mm forged piston Nitrite coated piston rings Chrome wristpin Circlips Top en...

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$165.97 - $165.97
$165.97
$165.97 - $165.97
$165.97
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