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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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99-04 TRX 400EX 88mm Rebuild Kit Top Bottom Big Bore Motor Engine Assembly 426c

BPRATV

WORKS ON ALL '99-04 HONDA 400EX MODELS Aftermarket 88mm big bore cylinder 88mm big bore Wiseco JE or CP forged piston* Nitrite coated piston rings ...

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Honda 400EX 400X +1 Ported Assembled Head Port Porting Kibblewhite +1mm Valves

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARSNEW after-market cylinder head and valve cover Full race port and polish Valve guides cut...

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99-04 400EX Sportrax Crank Bottom End Rebuild Crankshaft Motor Engine Assembly

BPRATV

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS Hotrods or Wiseco crankshaft assembly with rod Complete gasket kit MLS head gasket  Oil seal...

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400EX 400X XR400R Kibblewhite Valves Valve Springs Cylinder Head Valve Cover Kit

BPRATV

30-3111, 30-3115, 30-3117, 14721-KCY-670, 12200-KCY-670, 12200-HN1-A70, 12310-HN1-010, 12209-413-003, 14711-KCY-670, 71016-4, 71016, 8400003-2, 840...

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$303.39
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$257.88
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Honda TRX 400EX 400X Wiseco Heavy Duty Forged Clutch Basket Kit 2005-2014 BPRATV

BPRATV

Wiseco, WPP3043, 22100-HN1-A40, 22201-MAL-600, 22321-MV4-000, 22401-HN1-000, Upgrade your 05-14 (Honda TRX400EX/400X with a Wiseco Forged Clutch Ba...

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$28.81
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$28.81

Honda TRX400EX 400EX 400X XR400R Valve Keeper Cotters Complete Set 14781-HA0-770

BPRATV

Honda OEM, 14781-HA0-770, XC110, 519-CVV2220C, Secure your Honda's valvetrain with BPRATV's Valve Keeper Cotters Set of 8! Direct OEM replacement f...

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$377.98
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$377.98

Honda XR400 TRX 400EX 87mm 416cc Big Bore Top End Rebuild Kit Wiseco 10:1 Piston

BPRATV

1043-2, M2002, 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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$18.88
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Cylinder Head Valve Cover Metal Gasket for Honda TRX 400EX TRX400X 12391-KCY-671

BPRATV

12391-KCY-671,VC03201,XG119,CRUGVKCY,C7826, C7825, 12251-KCY-671, 12191-KCY-671, 91302-356-000, 18291-MN5-650, 14523-KBB-901, 91301-200-000, 91306-...

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Steel Valve Cover Gasket Honda TRX400EX TRX400X XR400R OEM Upgrade 12391‑KCY‑671

BPRATV

12391-KCY-671,VC03201,XG119,CRUGVKCY,C7826, C7825, 12251-KCY-671, 12191-KCY-671, 91302-356-000, 18291-MN5-650, 14523-KBB-901, 91301-200-000, 91306-...

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$398.88
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$398.88

TRX 400EX 400X 87mm Big Bore Cylinder +2mm Top End Rebuild Kit Complete Assembly

BPRATV

1043-2, M2002, 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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$102.99
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$102.99
$89.98
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$89.98

Honda TRX400EX 400EX 88mm 88 Big Bore Wiseco Piston Rings Set COMETIC Gasket Kit

BPRATV

Honda 400EX / 400X / XR400 88mm Wiseco Piston Replacement Rings KitPart# 3465XC/ XC8800 / C7826 Get Power and Performance with the Honda TRX400EX 4...

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$699.99
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$489.98
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$489.98

Honda TRX 400EX Big Bore 89mm 440cc 12.5:1 Wiseco Piston Top Engine Rebuild Kit

BPRATV

247612, 4667M08900, 4794M08900,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY...

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$299.99
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$258.88
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$258.88

BEST Honda TRX 400EX 400X Top End Rebuild Kit Stock Cylinder Piston Camshaft SKF

BPRATV

4606M08500, C7825, 1051-3, 12100-KCY-670, 71016-4,4667M08900, 1043-2, C7826, 1051-3, 12100-KCY-670, 71016-4, 13111-KCY-670, 4606M08500, C7826, 7101...

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$258.88

Honda TRX 400EX 400X Stock Bore Cylinder Camshaft 85mm Top End Rebuild Kit Parts

BPRATV

4606M08500, C7825, 1051-3, 12100-KCY-670, 71016-4,4667M08900, 1043-2, C7826, 1051-3, 12100-KCY-670, 71016-4, 13111-KCY-670, 4606M08500, C7826, 7101...

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$258.88

TRX 400EX 400X XR 400R Stock Cylinder Piston Top End Rebuild Kit Performance Cam

BPRATV

4606M08500, C7825, 1051-3, 12100-KCY-670, 71016-4,4667M08900, 1043-2, C7826, 1051-3, 12100-KCY-670, 71016-4, 13111-KCY-670, 4606M08500, C7826, 7101...

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$258.88
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$486.10
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$486.10
$388.88
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$388.88

Honda 400EX 400X XR400 87mm Big Bore Kit +2mm Cylinder 416 Top End Rebuild Parts

BPRATV

1043-2, M2002, 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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$729.98
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TRX 400EX 89mm +4 Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit 99-04

BPRATV

WPC131A, 4667M08900, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

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99-04 Honda TRX400EX 89mm 440 Big Bore Cylinder Wiseco Piston Engine Rebuild Kit

BPRATV

WPC131A, 4667M08900, 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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TRX 400EX 87mm +2 Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit 99-04

BPRATV

WPC131A, 4606M08700, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

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99-04 Honda 400EX 87mm Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit

BPRATV

WPC131A, 4606M08700, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

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99-04 Honda TRX400EX 87mm 416 Big Bore Cylinder Wiseco Piston Engine Rebuild Kit

BPRATV

WPC131A, 4606M08700, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

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$499.99
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$499.99
$348.88
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$348.88

TRX 400EX 400X XR400 89mm Big Bore Cylinder 10.8:1 JE Piston Gaskets Rebuild Kit

BPRATV

1043-2, M2002, 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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$1,099.99

05+ TRX 400EX 400X Big Bore 89mm Complete Rebuilt Motor Engine Rebuild Parts Kit

BPRATV

FITS ALL '05+ HONDA TRX 400EX AND 400X MODELS NEW 89mm after market cylinder CP JE or Wiseco forged hi comp pump gas piston** Hi temp piston rings ...

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$1,684.22
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Honda TRX 400EX Assembled Cylinder Head Stage 2 Hot Cams Chain Big Bore Cometic

BPRATV

14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 14751-KCY-670, 14761-KG0-003 14451-MBV-000, 14781-HA0-770, ...

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$1,702.53
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TRX 400EX 400EX Cylinder Head Stage 2 Hot Cams WISECO Chain Big Bore Cometic Kit

BPRATV

14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 14751-KCY-670, 14761-KG0-003 14451-MBV-000, 14781-HA0-770, ...

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Honda TRX400EX Assembled Cylinder Head Stage 2 Hot Cams WISECO Chain Cometic Kit

BPRATV

14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 14751-KCY-670, 14761-KG0-003 14451-MBV-000, 14781-HA0-770, ...

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400EX 400X XR400R Cylinder Head Stage 2 Hot Cams WISECO Chain Stock Cometic Kit

BPRATV

14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 14751-KCY-670, 14761-KG0-003 14451-MBV-000, 14781-HA0-770, ...

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$479.99
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$479.99
$316.99
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$316.99

Honda TRX 400EX X Top End Rebuild Repair Kit CP Carrillo Piston Gaskets Cylinder

BPRATV

Complete Standard Bore Top End Rebuild Kit!Honda TRX400EX & TRX400X Years 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012...

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$316.99
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$1,419.99
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05+ 400EX 400X Big Bore Stroker Complete 465cc Rebuilt Motor Engine 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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$1,445.99
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$1,299.99
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$1,299.99

99-04 400EX Big Bore Stroker Kit 89mm Rebuild Complete Top Bottom 465cc Assembly

BPRATV

4240, CBK0037, 4040, DPR8Z, WPC131A, WPC131B, CBK0016, TBK0012, K014, 3011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, 122...

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$1,017.88
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$772.56
$772.56 - $772.56
$772.56

Honda 400EX 400X 87mm 416cc 12.5:1 CP Piston Big Bore Cylinder Stage 2 Hot Cams

BPRATV

1043-2, M2008, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13...

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$772.56
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$772.56
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$772.56

85mm Cylinder 10:1 CP Piston Gasket Stage 2 Cam Top Rebuild Kit For Honda 400EX

BPRATV

1043-2, M2002, 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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$772.56
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$772.56
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$834.95
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$558.68
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$558.68

Honda 400EX 400X 87mm 416cc CP 11 Pump Gas Big Bore Cylinder Stage 1 Hot Cam Kit

BPRATV

1043-2, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13...

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$558.68
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$500.49
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$500.49
$323.89
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$323.89

Honda 400EX 400X XR400 Top End Rebuild Kit CP 10:1 Piston Gaskets Cylinder NGK🔥

BPRATV

Complete 85mm Stock / Standard Bore Top End Rebuild Kit With CP Carrillo Piston and Cometic GasketsThe best rebuild kit on the market should have a...

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$500.49
$323.89
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$323.89
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$323.89

Honda 400EX 400X XR400 Top End Rebuild Kit CP 11:1 Piston Gaskets Cylinder NGK🔥

BPRATV

Complete 85mm Stock / Standard Bore Top End Rebuild Kit With CP Carrillo Piston and Cometic GasketsThe best rebuild kit on the market should have a...

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$500.49
$323.89
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$323.89
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$1,119.99
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$768.99
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$768.99

99-04 400EX 400 EX BPR Stock Simple Rebuild Kit CP Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (Stock Bore 85mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no o...

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$768.99
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$768.99
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$1,039.99
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$1,039.99
$699.98
$699.98 - $699.98
$699.98

99-04 400EX 400 EX 85mm Simple Rebuild Kit Wossner Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (OEM Stock Bore 85mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say ...

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$699.98
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$881.99
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$881.99
$736.78
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$736.78

TRX400EX TRX 400EX Stage 3 Hotcam Kibblewhite Valve Spring Complete Head Rebuild

BPRATV

FITS ALL HONDA TRX400EX TRX400X AND XR400R YEARS AND MODELS   COMPLETE HEAD REBUILD KIT! Stage 3 Hotcam Cam bearings Rocker arms Rocker arm shaft...

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$736.78
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$736.78
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$1,264.95
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$1,264.95
$449.99
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$449.99

TRX400EX TRX 400EX Stage 2 Hotcam Hot Cam Valves Springs Rockers Head Rebuild

BPRATV

FITS ALL HONDA TRX400EX TRX400X AND XR400R YEARS AND MODELS   COMPLETE PERFORMANCE HEAD REBUILD KIT! Stage 2 Hotcam Complete valve train head re...

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$449.99
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$999.99
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$999.99
$849.99
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$849.99

TRX400EX TRX 400EX 88mm Big Bore Stage 2 Cam Kibblewhite Valves 426 Top End 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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$299.97
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$211.97
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$211.97

Honda 400EX 400X 89mm Piston Wiseco Big Bore +4 Over Piston Cometic Gasket Kit

BPRATV

Works on all Honda 400EX, 400X, and XR400R models and years Wiseco 89mm big bore forged piston Nitrite coated piston rings Chrome wristpin Circli...

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$211.97
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$211.97
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$699.99
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$699.99
$599.99
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$599.99

Honda 400EX 400X Top End Rebuild Cylinder Head Valve Cover Stock Upper Assembly

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW aftermarket cylinder 10:1 piston Hi-temp piston rings Chrome wrist pin Circlips To...

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$579.99
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$479.99
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$479.99

TRX 400EX 400X XR 416 Big Bore Kit 87 mil Cylinder +2 Complete Top End Rebuild

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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$1,154.99
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$1,039.49
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TRX 400EX 400X Assembled Head Assembly Stage 2 Hot Cam Chain Hotcam Camshaft Kit

BPRATV

FITS ALL XR400R TRX400EX and TRX400X MODELS New aftermarket cylinder head and valve cover Stage 2 Hotcams camshaft HD cam chain conversion SKF cam...

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$1,039.49
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$799.99
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$699.99
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TRX 400EX 400X Cylinder Head Valve Cover Complete Rebuild Kit Stage 1 Hotcam

BPRATV

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS - THE ONLY TRULY COMPLETE REBUILD KIT ONLINE All parts are aftermarket Cylinder head Valve ...

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$604.99
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$604.99
$399.99
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$399.99

TRX 400EX 400X Top End Rebuild Kit Stock Bore Cylinder Piston 85mm Assembly Part

BPRATV

1043-2, M2002, 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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$399.99
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$1,799.99
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$1,699.99
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05+ 400EX 400X 87mm Big Bore Rebuild Kit Top Bottom End Motor Engine Repair Redo

BPRATV

Works on all 2005+ Honda 400EX and 400X models 87mm big bore cylinder 87mm big bore Wiseco or Wossner forged piston Nitrite-coated piston rings C...

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$1,699.99
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400EX Ported Cylinder Head Assembly Stage 2 Hotcam Kibblewhite Studs Complete

BPRATV

Brand new aftermarket cylinder head and valve cover Full race port and polish - intake, exhaust, combustion chamber Valve guides cut Complete ass...

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