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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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$349.99
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416cc Big Bore Wiseco 87mm Piston & Cometic Gasket Kit Honda TRX400EX 400X XR400

Wiseco
Out of stock

4628M08700, C7826, 4606M08700, M2001, 133889, Upgrade your Honda 400EX, 400X, or XR400R with this Wiseco 87mm 416cc Big Bore Piston & Cometic G...

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$383.95
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$383.95

Hot Cams Stage 2 Camshaft Honda TRX400EX 400X XR400R 99–14 Mid Top End Power Cam

Hot Cams
Low stock

1043-2, 14000-HN1-A70, 14000-HN1-000, 1007-1, 1051-3, 1043-2, 14000-KCY-670, 14000-HN1-A70, 14401-KCY-671, 91002-MN1-671, 91003-KF0-008 💥 Honda T...

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$136.86
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$136.86
$108.88
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$108.88

Honda 400EX 400X XR400 Kibblewhite Head Saver Intake Exhaust Valve Guides Seals

Kibblewhite Precision
Out of stock

30-3120, 30-3111, 30-3115, 30-3117, MRS16, 30-3120, 71016-2, 12231-KF0-305,12209-KL4-005 🔥 99-14 Honda 400EX 400X Kibblewhite Head Saver Valve Gu...

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$108.88
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$53.99
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$43.19
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$43.19

TRX400EX XR400 400X Honda Valve Keepers Cotters with Kibblewhite Red Viton Seals

Kibblewhite Precision
In stock

Secure your Honda's valvetrain with this Complete Kit! Includes 8 Valve Keepers (14781-HA0-770) & 4 Kibblewhite RED Viton Seals (12209-422-005,...

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$43.19
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Honda TRX400EX 400X XR400R Valve Keepers Cotters Set Kibblewhite Viton Seals Kit

Kibblewhite Precision
In stock

Secure your Honda's valvetrain with this Complete Kit! Includes 8 Valve Keepers (14781-HA0-770) & 4 Kibblewhite RED Viton Seals (12209-422-005,...

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$369.99
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$369.99
$298.88
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$298.88

Honda TRX400EX XR400 85mm 400cc Stock Bore Kit Wiseco Forged Piston Cometic MLS

BPRATV
Out of stock

4606M08500 / C7825 / 400EX-CYL85, 3P-400, 12100-KCY-670,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY...

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$298.88
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$298.88
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$264.00
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$264.00
$194.56
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$194.56

Kibblewhite Top End Kit TRX 400EX 400X XR400R Valves Seals MLS Gaskets Complete

Kibblewhite Precision
In stock

Kibblewhite Top End Kit TRX 400EX 400X XR400R Valves Seals MLS Gaskets Complete ...

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$194.56
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$194.56
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$489.99
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$388.88
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$388.88

Honda 400EX 400X XR400 Top End Rebuild Kit CP Piston Gaskets Cylinder NGK Plug

CP-Carrillo
Low stock

400EX-CYL85 M2002 400EX-TEG DPR8Z, 810894, M2003,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

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$388.88
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$388.88

Honda 400EX 400X XR400 Top End Rebuild Kit Stock CP Piston NGK Plug Cometic Set

CP-Carrillo
Low stock

400EX-CYL85 M2002 400EX-TEG DPR8Z, 810894, M2003,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

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$388.88
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$388.88
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$388.88
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$388.88

Honda 400EX 400X XR400 Top End Rebuild Kit 11:1 CP Piston NGK Plug & Cometic Set

CP-Carrillo
Low stock

400EX-CYL85 M2002 400EX-TEG DPR8Z, 810894, M2003,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

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$489.99
$388.88
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$388.88
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$489.99
$388.88
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$388.88

Honda TRX400EX 400X XR400 85mm 11:1 CP Piston Top End Kit Cometic MLS Gasket Set

CP-Carrillo
Low stock

400EX-CYL85 M2002 400EX-TEG DPR8Z, 810894, M2003,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

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$489.99
$388.88
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$388.88
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$489.99
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$489.99
$388.88
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$388.88

Honda TRX400EX 400X XR400 85mm Top End Rebuild Kit 11:1 CP Piston Cometic Gasket

CP-Carrillo
Low stock

400EX-CYL85 M2002 400EX-TEG DPR8Z, 810894, M2003,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

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$388.88
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$599.99
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$599.99
$447.50
$447.50 - $447.50
$447.50

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

BPRATV
In stock

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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$419.98
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$419.98
$376.88
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$376.88

TRX 400EX TRX400EX 400X 87mm 87 416cc Big Bore Cylinder 11:1 Top End Rebuild Kit

BPRATV
In stock

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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$49.95
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$49.95
$39.98
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$39.98

Wiseco 88mm Ring Set 3465XC Fits Honda 400EX XR400R 426cc Big Bore Piston Repair

Wiseco
In stock

🔥 Honda 400EX / XR400 88mm Wiseco Big Bore Piston Ring Set – 3465XC 🔥 🛠️ Product Overview This listing is for a genuine Wiseco 88mm piston r...

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$39.98
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$39.98

Honda TRX 400EX XR400 Wiseco 88mm Piston Rings 3465XC Big Bore 426cc Rebuild Set

Wiseco
In stock

🔥 Honda 400EX / XR400 88mm Wiseco Big Bore Piston Ring Set – 3465XC 🔥 🛠️ Product Overview This listing is for a genuine Wiseco 88mm piston r...

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$39.98
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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
In stock

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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$386.78
$388.88
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$388.88

TRX400EX 400EX 400X XR400 85mm Stock Bore Cylinder JE Piston Gaskets Rebuild Kit

BPRATV
Low stock

TRX400EX 400EX 400X XR400 85mm Stock Bore Cylinder JE Piston Gasket Rebuild Kit! ...

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$605.79
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$424.44
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$424.44

TRX400EX 400EX 400X XR400 89mm 89 440cc JE Cometic 10.8:1 Cylinder Big Bore Kit

JE Pistons
Low stock

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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$424.44
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$599.99
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$447.50
$447.50 - $447.50
$447.50

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

BPRATV
In stock

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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$447.50
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$381.55
$381.55 - $381.55
$381.55
$238.87
$238.87 - $238.87
$238.87

TRX400EX 400EX 87mm 87 416cc Big Bore Cylinder 11:1 CP Piston Cometic Gasket Kit

BPRATV
Low stock

4628M08700, 133889, 4606M08700, 1043-2, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, ...

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$381.55
$238.87
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$238.87
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$999.99
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$999.99
$648.88
$648.88 - $648.88
$648.88

99-04 Honda 400EX 85mm OEM Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit

BPRATV
Out of stock

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

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

99-04 Honda TRX 400EX 85mm Stock Bore Cylinder Wiseco Piston Engine Rebuild Kit

Wiseco
Out of stock

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

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$1,019.99
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$1,019.99
$744.44
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$744.44

TRX 400EX 89mm +4 Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit 99-04

BPRATV
Low stock

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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$744.44
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$744.44

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

BPRATV
Low stock

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

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

BPRATV
Low stock

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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$699.98
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$699.98
Save 31% Save %
$386.78 - $386.78
$386.78
$388.88
$388.88 - $388.88
$388.88

TRX400EX 400EX 400X XR400 85mm Stock Bore Cylinder JE Piston Gaskets Rebuild Kit

BPRATV
Low stock

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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$388.88
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$388.88
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$605.79
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$605.79
$424.44
$424.44 - $424.44
$424.44

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

BPRATV
Low stock

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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$424.44
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$496.85
$496.85 - $496.85
$496.85
$359.36
$359.36 - $359.36
$359.36

Honda TRX400EX TRX 400EX Kibblewhite Intake Exhaust Valves Guides Seals Springs

Kibblewhite Precision
In stock

330-3120,30-3111,30-3115,30-3117,71016-4, 14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14421-KCY-670 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 144...

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$496.85
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$359.36
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$359.36
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$1,299.99
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$1,299.99
$1,099.99
$1,099.99 - $1,099.99
$1,099.99

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

BPRATV
In stock

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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$1,299.99
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$1,684.22
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$1,684.22
$999.98
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$999.98

Honda TRX 400EX Assembled Cylinder Head Stage 2 Hot Cams Chain Big Bore Cometic

BPRATV
Out of stock

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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$1,684.22
$999.98
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$999.98
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$1,702.53
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$1,702.53
$999.98
$999.98 - $999.98
$999.98

TRX 400EX 400EX Cylinder Head Stage 2 Hot Cams WISECO Chain Big Bore Cometic Kit

BPRATV
Out of stock

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
$999.98
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$999.98
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$1,702.53
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$1,702.53
$999.98
$999.98 - $999.98
$999.98

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

BPRATV
Out of stock

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
$999.98
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$999.98
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$1,702.53
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$1,702.53
$999.98
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$999.98

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

BPRATV
Out of stock

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
$999.98
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$999.98
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$97.66
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$97.66
$86.48
$86.48 - $86.48
$86.48

Honda TRX400EX 400X XR400 Kibblewhite Heavy Duty High Temp Head Studs 30-33750

Kibblewhite Precision
In stock

Upgrade your Honda TRX400EX with Kibblewhite heavy duty head studs featuring 180000 PSI alloy steel construction and superior clamping force. Upg...

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$97.66
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$97.66
$86.48
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$86.48
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$538.68
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$538.68
$533.68
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$533.68

TRX 400EX 400X XR400R Stage 1 Hot Cams Valves Springs Complete Head Rebuild Kit

Hot Cams
In stock

1007-1,3P-HRK,14775-KCY-670,90544-KF0-000,91002-MN1-671FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARSStage 1 Hot Cams CamshaftSKF OEM U...

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$538.68
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$538.68
$533.68
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$533.68
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$257.75
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$257.75
$188.88
$188.88 - $188.88
$188.88

Honda TRX 400EX 400X XR400 Wiseco 86mm 10:1 Piston Kit & Cometic Top End Gasket

Wiseco
Out of stock

4606M08600, C7826,12100-KCY-670, 4606M08500, C7825, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, PK103...

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$257.75
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$257.75
$188.88
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$188.88
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$282.75
$282.75 - $282.75
$282.75
$199.98
$199.98 - $199.98
$199.98

Honda TRX 400EX 400X XR400 Wiseco 87mm 10:1 Piston Kit & Cometic Top End Gasket

Wiseco
Out of stock

4606M08700, C7826,12100-KCY-670, 4606M08500, C7825, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, PK103...

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$282.75
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$282.75
$199.98
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$199.98
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Sold out
$282.75
$282.75 - $282.75
$282.75
$199.98
$199.98 - $199.98
$199.98

Honda TRX 400EX 400X XR400 Wiseco 88mm 10:1 Piston Kit & Cometic Top End Gasket

Wiseco
Out of stock

4606M08800, C7826, C3465XC, S520, CW20, C7826,12100-KCY-670, 4606M08500, C7825, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-K...

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$282.75
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$199.98
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$199.98
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$1,264.95
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$1,264.95
$444.43
$444.43 - $444.43
$444.43

TRX400EX TRX 400EX Stage 1 Hotcam Hot Cam Valves Springs Chain Head Rebuild Kit

BPRATV
Low stock

FITS ALL HONDA TRX400EX TRX400X AND XR400R YEARS AND MODELS   COMPLETE PERFORMANCE HEAD REBUILD KIT! Listing includes: Stage 1 Hotcam Valve spri...

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$444.43
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$400.00
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$400.00
$398.88
$398.88 - $398.88
$398.88

TRX 400EX TRX400EX 400X 87mm 87 416cc Big Bore Cylinder 10:1 Top End Rebuild Kit

BPRATV
Low stock

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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$400.00
$398.88
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$133.78
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$133.78
$119.89
$119.89 - $119.89
$119.89

99-14 TRX400EX TRX 400EX ProX Pro X Intake Exhaust Valve Kit & KIBBLEWHITE Seals

Pro-X
Low stock

28.1495-2, 28.1495-1,14711-KCY-670,14721-KCY-670,12209-KL4-005,30-3115,30-3117,8400003-2, 8400003-1,VES003,VIS003,X2VEK16000,X2VIK16000Is your Hond...

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$119.89
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$119.89
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$133.78
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$133.78
$119.89
$119.89 - $119.89
$119.89

Honda TRX400EX TRX 400EX ProX Head Fix Intake & Exhaust Valves KPMI Red Seal Kit

Pro-X
Low stock

28.1495-2, 28.1495-1,14711-KCY-670,14721-KCY-670,12209-KL4-005,30-3115,30-3117,8400003-2, 8400003-1,VES003,VIS003,X2VEK16000,X2VIK16000Is your Hond...

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$119.89
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$119.89
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$1,017.88
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$1,017.88
$872.56
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$872.56

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

BPRATV
Low stock

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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$872.56
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$872.56
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$1,017.88
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$872.56
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$872.56

BPRATV TRX400EX 400EX 87mm 12.5 CP Piston Big Bore Cylinder Stage 2 Hot Cam Kit

BPRATV
Low stock

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, 1311...

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$872.56
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$1,017.88
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$1,017.88
$888.88
$888.88 - $888.88
$888.88

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

BPRATV
Low stock

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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$888.88
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$888.88
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$834.95
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$834.95
$788.88
$788.88 - $788.88
$788.88

99-14 Honda 400EX 400 EX Top End Cylinder Kit 10:1 CP Piston Stage 1 Hotcams Kit

BPRATV
Low stock

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-6...

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$788.88
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$788.88
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$925.35
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$925.35
$802.33
$802.33 - $802.33
$802.33

Honda 400EX 400X 87mm 416cc CP 11 Pump Gas Big Bore Cylinder Stage 2 Hot Cam Kit

BPRATV
Low stock

Honda 400EX 400X 87mm 416cc CP 11 Pump Gas Big Bore Cylinder Stage 2 Hot Cam Kit ...

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$925.35
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$925.35
$802.33
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