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BPRATV will be closed on December 24th and 25th in observance of the Christmas holiday. We will have very limited operations from December 27th to December 31st for our annual cycle counts. Thank you for your patience and understanding. Additionally, we will be closed on January 1, 2025, for New Year's Day.
BPRATV will be closed on December 24th and 25th in observance of the Christmas holiday. We will have very limited operations from December 27th to December 31st for our annual cycle counts. Thank you for your patience and understanding. Additionally, we will be closed on January 1, 2025, for New Year's Day.

Honda TRX400EX

Honda 400EX Rebuild Kits, Pistons, and Parts
Original price $499.99
Original price $499.99 - Original price $499.99
Original price $499.99
Current price $449.99
$449.99 - $449.99
Current price $449.99

TRX 400EX 400X Cylinder Head Valve Cover Complete Rebuild Kit Valves Rocker Arms

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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Original price $499.99
Original price $499.99 - Original price $499.99
Original price $499.99
Current price $449.99
$449.99 - $449.99
Current price $449.99
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Original price $14.99
Original price $14.99 - Original price $14.99
Original price $14.99
Current price $9.49
$9.49 - $9.49
Current price $9.49

2005+ Honda 400EX 400X Right Crankcase Clutch Cover Gasket 11394-KCY-671

BPRATV

  Aftermarket Crankcase Clutch Cover Gasket   Replaces OEM # 11394-KCY-671    

Original price $14.99
Original price $14.99 - Original price $14.99
Original price $14.99
Current price $9.49
$9.49 - $9.49
Current price $9.49
Save 37% Save %
Original price $384.99
Original price $384.99 - Original price $384.99
Original price $384.99
Current price $255.11
$255.11 - $255.11
Current price $255.11

Honda TRX400EX TRX 400EX 400X Stage 3 Three Hotcams Hot Cams Cam HD Timing Chain

Hot Cams

Get ready to take your Honda TRX400EX TRX 400EX 400X to the next level with this Stage 3 Three Hotcam Hot Cam Hotcams & Timing Chain kit! This ...

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Original price $384.99
Original price $384.99 - Original price $384.99
Original price $384.99
Current price $255.11
$255.11 - $255.11
Current price $255.11
Save 34% Save %
Original price $151.99
Original price $151.99 - Original price $151.99
Original price $151.99
Current price $124.98
$124.98 - $124.98
Current price $124.98

99-14 TRX400EX 400EX TITANIUM Cylinder Head Valve Cover Bolts & EXHAUST STUD KIT

BPRATV Talon Titanium

BPRATV - The Original Trailblazer for Titanium Hardware in the ATV Industry. Fits Honda TRX 400EX 400X XR400 All Years!Race to the finish line with...

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Original price $151.99
Original price $151.99 - Original price $151.99
Original price $151.99
Current price $124.98
$124.98 - $124.98
Current price $124.98
Save 18% Save %
Original price $449.99
Original price $449.99 - Original price $449.99
Original price $449.99
Current price $394.98
$394.98 - $394.98
Current price $394.98

TRX 400EX 400 400X Kibblewhite +1 Valves Springs Complete Valve Head Rebuild Kit

Kibblewhite Precision

Take your Honda 400EX, 400X or XR400R to the next level with this complete valve head rebuild kit from Kibblewhite. This high-performance kit gives...

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Original price $449.99
Original price $449.99 - Original price $449.99
Original price $449.99
Current price $394.98
$394.98 - $394.98
Current price $394.98
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Original price $1,264.95
Original price $1,264.95 - Original price $1,264.95
Original price $1,264.95
Current price $399.99
$399.99 - $399.99
Current price $399.99

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

BPRATV

FITS ALL HONDA TRX400EX TRX400X AND XR400R YEARS AND MODELS   COMPLETE HEAD REBUILD KIT! Stage 1 Hotcam Cam bearings Rocker arms Rocker arm shafts...

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Original price $1,264.95
Original price $1,264.95 - Original price $1,264.95
Original price $1,264.95
Current price $399.99
$399.99 - $399.99
Current price $399.99
Save 68% Save %
Original price $714.99
Original price $714.99 - Original price $714.99
Original price $714.99
Current price $629.99
$629.99 - $629.99
Current price $629.99

Honda 400EX 400X Top End Rebuild Kit Stage 2 Hotcam Valve Springs COMPLETE KIT

BPRATV

85mm cylinder Wiseco or Wossner forged piston Hi temp piston rings Chrome wristpin Circlips Cometic top end gasket kit Hotcams Stage 2 Camshaft...

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Original price $714.99
Original price $714.99 - Original price $714.99
Original price $714.99
Current price $629.99
$629.99 - $629.99
Current price $629.99
Save 12% Save %
Original price $599.99
Original price $599.99 - Original price $599.99
Original price $599.99
Current price $449.99
$449.99 - $449.99
Current price $449.99

TRX 400X 400EX Stage 2 Hotcam Rocker Arms Valves TRULY COMPLETE Head Rebuild Kit

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS - ALL OTHER KITS YOU SEE ARE MISSING IMPORTANT PARTS YOU MUST HAVE TO REBUILD YOUR HEAD....

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Original price $599.99
Original price $599.99 - Original price $599.99
Original price $599.99
Current price $449.99
$449.99 - $449.99
Current price $449.99
Save 25% Save %
Original price $299.99
Original price $299.99 - Original price $299.99
Original price $299.99
Current price $239.99
$239.99 - $239.99
Current price $239.99

TRX 400EX 400X Stage 1 Hotcam Hot Cam Camshaft Bearings HD Chain Conversion Kit

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS Stage 2 Hotcams camshaft HD timing chain conversion - a thicker, stronger chain that doe...

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Original price $299.99
Original price $299.99 - Original price $299.99
Original price $299.99
Current price $239.99
$239.99 - $239.99
Current price $239.99
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Original price $999.99 - Original price $999.99
Original price
$999.99
$999.99 - $999.99
Current price $999.99

TRX 400EX 400X Port Ported Assembled Head Porting Assembly Valves

BPRATV

FITS ALL XR400R TRX400EX and TRX400X MODELS PHOTO IS NOT A STOCK IMAGE.  IT IS EXACTLY WHAT YOUR HEAD WILL LOOK LIKE.  THE PORTING IS EXACTLY THE ...

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Original price $999.99 - Original price $999.99
Original price
$999.99
$999.99 - $999.99
Current price $999.99
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Original price $799.99
Original price $799.99 - Original price $799.99
Original price $799.99
Current price $599.99
$599.99 - $599.99
Current price $599.99

TRX 400EX 400X Assembled Head Assembly Complete Valves Valve Cover Spring Rocker

BPRATV

WORKS ON ALL HONDA 400EX 400X XR400R MODELS AND YEARS NEW aftermarket cylinder head with valve cover Valve springs Valve spring seats Val...

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Original price $799.99
Original price $799.99 - Original price $799.99
Original price $799.99
Current price $599.99
$599.99 - $599.99
Current price $599.99
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Original price $844.11
Original price $844.11 - Original price $844.11
Original price $844.11
Current price $717.49
$717.49 - $717.49
Current price $717.49

TRX 400EX 400X Big Bore 89mm 440 Stage 3 Hotcam Kibblewhite Springs Top End Kit

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW after market 89mm cylinder Wiseco CP or JE forged piston** Hi temp piston rings Wris...

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Original price $844.11
Original price $844.11 - Original price $844.11
Original price $844.11
Current price $717.49
$717.49 - $717.49
Current price $717.49
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Original price $149.99
Original price $149.99 - Original price $149.99
Original price $149.99
Current price $124.99
$124.99 - $124.99
Current price $124.99

Get Honda 400EX Sportrax TITANIUM Head Studs 400X TI Cylinder Head Stud Bolt Kit

BPRATV

FITS ALL HONDA TRX400EX, 400X AND XR400R MODELS AND YEARS All Grade 5 Titanium Alloy cylinder head stud kit Allen head, heat treated studs 12 po...

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Original price $149.99
Original price $149.99 - Original price $149.99
Original price $149.99
Current price $124.99
$124.99 - $124.99
Current price $124.99
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Original price $49.99
Original price $49.99 - Original price $49.99
Original price $49.99
Current price $23.99
$23.99 - $23.99
Current price $23.99

01-08 Honda TRX 400EX Sportrax 400 85mm 10:1 Aftermarket Stock Bore Piston Kit

BPRATV

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

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Original price $49.99
Original price $49.99 - Original price $49.99
Original price $49.99
Current price $23.99
$23.99 - $23.99
Current price $23.99
Save 52% Save %
Original price $133.78
Original price $133.78 - Original price $133.78
Original price $133.78
Current price $119.89
$119.89 - $119.89
Current price $119.89

Honda 400EX 400X XR400 ProX Valve Rebuild Kit Valves Set KIBBLEWHITE Red Seals

Pro-X

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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Original price $133.78
Original price $133.78 - Original price $133.78
Original price $133.78
Current price $119.89
$119.89 - $119.89
Current price $119.89
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Original price $281.46
Original price $281.46 - Original price $281.46
Original price $281.46
Current price $208.89
$208.89 - $208.89
Current price $208.89

Honda 400EX 400X Wiseco 85mm Stock Bore 11:1 Piston COMETIC Top End Gasket Kit

Wiseco

Wiseco 85mm Stock Bore 11:1 Compression Piston & Cometic Top End Gasket KitFits Honda TRX 400EX & 400XYears 1999 2000 2001 2002 2003 2004 2...

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Original price $281.46
Original price $281.46 - Original price $281.46
Original price $281.46
Current price $208.89
$208.89 - $208.89
Current price $208.89
Save 26% Save %
Original price $102.99
Original price $102.99 - Original price $102.99
Original price $102.99
Current price $89.98
$89.98 - $89.98
Current price $89.98

Honda TRX400EX 400EX 89mm 89 Big Bore Wiseco Piston Rings Set COMETIC Gasket Kit

Wiseco

Honda 400EX / 400X / XR400 89mm Wiseco Piston Replacement Rings KitPart# 3504XC / XC8900 / C7826 Get Power and Performance with the Honda TRX400EX ...

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Original price $102.99
Original price $102.99 - Original price $102.99
Original price $102.99
Current price $89.98
$89.98 - $89.98
Current price $89.98
Save 13% Save %
Original price $119.99
Original price $119.99 - Original price $119.99
Original price $119.99
Current price $99.98
$99.98 - $99.98
Current price $99.98

05-14 TRX400EX TRX 400EX TITANIUM Cylinder Head Valve Cover Bolt Kit Ti Bolts

BPRATV Talon Titanium

BPRATV - The Original Trailblazer for Titanium Hardware in the ATV Industry. Fits Honda TRX 400EX 400X XR400 All Years!Race to the finish line with...

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Original price $119.99
Original price $119.99 - Original price $119.99
Original price $119.99
Current price $99.98
$99.98 - $99.98
Current price $99.98
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Original price $374.99
Original price $374.99 - Original price $374.99
Original price $374.99
Current price $223.41
$223.41 - $223.41
Current price $223.41

Honda TRX400EX TRX 400EX Kibblewhite Head Fix +1mm Intake Exhaust Valves Springs

Kibblewhite Precision

Breathe new life into your Honda TRX400EX with this complete performance valve upgrade kit from the pros at Kibblewhite.Key Features: Oversized 34m...

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Original price $374.99
Original price $374.99 - Original price $374.99
Original price $374.99
Current price $223.41
$223.41 - $223.41
Current price $223.41
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Original price $594.95
Original price $594.95 - Original price $594.95
Original price $594.95
Current price $465.36
$465.36 - $465.36
Current price $465.36

Hot Rods Complete Bottom End Rebuild Kit for 05+ Honda TRX400EX 400EX XR400 400X

Hot Rods

Hot Rods OEM Replacement Complete Bottom End Kit Rebuild KitFits Honda 2005-2008 Sportrax 400EX & 2009-2014 TRX 400X ModelsHot Rods Bottom End ...

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Original price $594.95
Original price $594.95 - Original price $594.95
Original price $594.95
Current price $465.36
$465.36 - $465.36
Current price $465.36
Save 22% Save %
Original price $100.00
Original price $100.00 - Original price $100.00
Original price $100.00
Current price $85.89
$85.89 - $85.89
Current price $85.89

Kibblewhite Honda TRX 400EX 400X Stronger Heavy Duty Cylinder Head Studs Kit

Kibblewhite Precision

Brand New Kibblewhite Extreme Heavy Duty Head Stud KitHonda 400EX & 400X Years 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011...

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Original price $100.00
Original price $100.00 - Original price $100.00
Original price $100.00
Current price $85.89
$85.89 - $85.89
Current price $85.89
Save 14% Save %
Original price $999.99
Original price $999.99 - Original price $999.99
Original price $999.99
Current price $639.98
$639.98 - $639.98
Current price $639.98

05-14 Honda 400EX 400X Wiseco Crank Rod Motor Rebuild Repair Kit Piston Gaskets

Wiseco

Complete Wiseco Complete Engine Rebuild Rebuild Kit!Honda TRX400EX & TRX400X Years 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 ONLYThis k...

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Original price $999.99
Original price $999.99 - Original price $999.99
Original price $999.99
Current price $639.98
$639.98 - $639.98
Current price $639.98
Save 36% Save %
Original price $51.46
Original price $51.46 - Original price $51.46
Original price $51.46
Current price $36.89
$36.89 - $36.89
Current price $36.89

Honda 400EX XR400 89mm 440cc Big Bore Wiseco Piston Replacement Rings Set 3504XC

Wiseco

Honda 400EX / 400X / XR400 89mm Wiseco Big Bore Piston Replacement Rings KitPart# 3504XCThese rings are for Wiseco Piston Part #'s 4667M08900 &...

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Original price $51.46
Original price $51.46 - Original price $51.46
Original price $51.46
Current price $36.89
$36.89 - $36.89
Current price $36.89
Save 28% Save %
Original price $39.99
Original price $39.99 - Original price $39.99
Original price $39.99
Current price $39.98
$39.98 - $39.98
Current price $39.98

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

BPRATV

Honda 400EX / 400X / XR400 88mm Wiseco Big Bore Piston Replacement Rings KitPart# 3465XC / XC8800These rings are for Wiseco Piston Part #'s 4606M08...

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Original price $39.99
Original price $39.99 - Original price $39.99
Original price $39.99
Current price $39.98
$39.98 - $39.98
Current price $39.98
Save 0% Save %
Original price $599.99 - Original price $599.99
Original price
$599.99
$599.99 - $599.99
Current price $599.99

TRX400EX TRX 400EX Big Bore Kit 87mm Cylinder Stage 2 Hotcam Top End Rebuild Kit

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW 87mm cylinder Wiseco CP or JE forged piston Hi temp piston rings Wristpin Circlips ...

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Original price $599.99 - Original price $599.99
Original price
$599.99
$599.99 - $599.99
Current price $599.99
Original price $999.99 - Original price $999.99
Original price
$999.99
$999.99 - $999.99
Current price $999.99

TRX400EX TRX 400EX 400X Complete Assembled Head Porting Port Assemble Valves Kit

BPRATV

FITS ALL HONDA TRX400EX AND 400X MODELS AND YEARS NEW AFTER MARKET cylinder head with valve cover  Full race port and polish  Complete head assem...

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Original price $999.99 - Original price $999.99
Original price
$999.99
$999.99 - $999.99
Current price $999.99
Sold out
Original price $599.99
Original price $599.99 - Original price $599.99
Original price $599.99
Current price $409.99
$409.99 - $409.99
Current price $409.99

TRX400EX TRX 400EX Stage 3 Hotcam Hot Cam Valves Springs Chain Head Rebuild Kit

Hot Cams

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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Original price $599.99
Original price $599.99 - Original price $599.99
Original price $599.99
Current price $409.99
$409.99 - $409.99
Current price $409.99
Save 32% Save %
Original price $699.99
Original price $699.99 - Original price $699.99
Original price $699.99
Current price $629.99
$629.99 - $629.99
Current price $629.99

TRX 400EX 400X Cylinder Head Valve Cover Complete Rebuild Kit Stage 2 Hot Cam

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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Original price $699.99
Original price $699.99 - Original price $699.99
Original price $699.99
Current price $629.99
$629.99 - $629.99
Current price $629.99
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Original price $1,154.95
Original price $1,154.95 - Original price $1,154.95
Original price $1,154.95
Current price $279.99
$279.99 - $279.99
Current price $279.99

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

BPRATV

FITS ALL HONDA 400EX 400X XR400R YEARS AND MODELS!! Aftermarket 85mm cylinder Standard 85mm 10:1 piston Piston rings Wristpin Circlips Top end ga...

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Original price $1,154.95
Original price $1,154.95 - Original price $1,154.95
Original price $1,154.95
Current price $279.99
$279.99 - $279.99
Current price $279.99
Save 76% Save %
Original price $599.99
Original price $599.99 - Original price $599.99
Original price $599.99
Current price $595.00
$595.00 - $595.00
Current price $595.00

TRX 400EX 400X Stage 2 Hot Cam Kibblewhite Valve Springs Head Rebuild Redo Kit

Kibblewhite Precision

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS - THE ONLY TRULY COMPLETE REBUILD KIT ONLINE Stage 2 Hotcam SKF cam bearings Kibblewhite st...

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Original price $599.99
Original price $599.99 - Original price $599.99
Original price $599.99
Current price $595.00
$595.00 - $595.00
Current price $595.00
Save 1% Save %
Original price $124.99
Original price $124.99 - Original price $124.99
Original price $124.99
Current price $88.88
$88.88 - $88.88
Current price $88.88

TRX 400EX 400X XR400 Ti Cylinder Case Studs 90085-KCY-670 TITANIUM Stud Bolt Kit

BPRATV

BPRATV - The Original Trailblazer for Titanium Hardware in the ATV Industry. FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARSTHESE STUDS ...

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Original price $124.99
Original price $124.99 - Original price $124.99
Original price $124.99
Current price $88.88
$88.88 - $88.88
Current price $88.88
Save 29% Save %
Original price $499.99
Original price $499.99 - Original price $499.99
Original price $499.99
Current price $399.98
$399.98 - $399.98
Current price $399.98

Honda TRX 400EX 400X Complete Head Rebuild Redo Kibblewhite Valves Valve Springs

BPRATV

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS - THE ONLY TRULY COMPLETE REBUILD KIT ONLINE Kibblewhite stainless steel intake and exhaust v...

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Original price $499.99
Original price $499.99 - Original price $499.99
Original price $499.99
Current price $399.98
$399.98 - $399.98
Current price $399.98
Save 20% Save %
Original price $1,799.99
Original price $1,799.99 - Original price $1,799.99
Original price $1,799.99
Current price $1,599.99
$1,599.99 - $1,599.99
Current price $1,599.99

99-04 400EX 87mm Big Bore Rebuild Kit Top Bottom End Motor Engine Repair Redo

BPRATV

Works on all '99-04 Honda 400EX models 87mm big bore cylinder 87mm big bore Wiseco or Wossner forged piston Nitrite coated piston rings Chrome wr...

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Original price $1,799.99
Original price $1,799.99 - Original price $1,799.99
Original price $1,799.99
Current price $1,599.99
$1,599.99 - $1,599.99
Current price $1,599.99
Sold out
Original price $461.99
Original price $461.99 - Original price $461.99
Original price $461.99
Current price $399.98
$399.98 - $399.98
Current price $399.98

400EX 400X 89mm Hi Comp Big Bore Kit Race Gas 12.5:1 Piston +4 Rebuild 440cc Kit

BPRATV

M2033,4667M08900,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12...

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Original price $461.99
Original price $461.99 - Original price $461.99
Original price $461.99
Current price $399.98
$399.98 - $399.98
Current price $399.98
Save 13% Save %
Original price $494.06 - Original price $494.06
Original price
$494.06
$494.06 - $494.06
Current price $494.06

99-04 TRX 400EX Bottom End Rebuild Kit Hotrods Crank Lower Motor Engine Assembly

BPRATV

FITS ALL '99-04 HONDA 400EX MODELS Hotrods replacement crankshaft with rod assembled SKF heavy duty replacement crank bearings Complete gasket ki...

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Original price $494.06 - Original price $494.06
Original price
$494.06
$494.06 - $494.06
Current price $494.06
Original price $1,299.99
Original price $1,299.99 - Original price $1,299.99
Original price $1,299.99
Current price $1,199.99
$1,199.99 - $1,199.99
Current price $1,199.99

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

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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Original price $1,299.99
Original price $1,299.99 - Original price $1,299.99
Original price $1,299.99
Current price $1,199.99
$1,199.99 - $1,199.99
Current price $1,199.99
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