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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

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$105.99 - $105.99
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$105.99

99-08 Honda 400EX Crank Pin Rod Bearing Bottom End Crankshaft Rod Rebuild Kit

BPRATV

WORKS ON ALL HONDA 1999-2008 400EX and 2009-2014 TRX 400X YEAR MAKE MODELS Aftermarket replacement crank pin and rod bearing Includes thrust wash...

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$105.99 - $105.99
$105.99
$105.99 - $105.99
$105.99
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$1,699.99
$1,699.99 - $1,699.99
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$1,599.99
$1,599.99 - $1,599.99
$1,599.99

400EX Cylinder Head Kibblewhite Valves Complete Top End Rebuild Stage 2 Hotcam

BPRATV

THIS IS IT! NO ONE SELLS IT LIKE WE DO! FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS Kit includes: NEW aftermarket 85mm cylinder ...

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

05+ 400X 400EX Sportrax Crank Bottom End Rebuild Crankshaft Motor Engine Redo

BPRATV

FITS ALL 2005+ HONDA 400EX AND 400X MODELS Hotrods or Wiseco crankshaft assembly with rod Complete gasket kit MLS head gasket  Oil seal kit  Valve...

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

99-04 TRX 400EX 89mm Rebuild Kit Top Bottom Big Bore Motor Engine Assembly 440c

BPRATV

WORKS ON ALL '99-04 HONDA 400EX MODELS Aftermarket 89mm big bore cylinder 89mm big bore Wiseco JE or CP forged piston* Nitrite coated piston rings ...

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$1,099.99 - $1,099.99
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$145.00 - $145.00
$145.00
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$145.00

400EX 400X XR400 Kibblewhite Stainless Valves Seals Top End Gaskets Gasket Kit

BPRATV

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS!! Kibblewhite Black Diamond kit Stainless steel one piece valve construction MADE IN USA...

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$145.00 - $145.00
$145.00
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$145.00
$494.06 - $494.06
$494.06
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$494.06

2005 TRX 400EX Bottom End Rebuild Kit Hotrods Crank Lower Motor Engine Assembly

BPRATV

FITS ALL 2005+ HONDA 400EX MODELS Hotrods replacement crankshaft with rod assembled SKF heavy duty replacement crank bearings Complete gasket kit...

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$494.06 - $494.06
$494.06
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$791.99
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$791.99
$59.99
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$59.99

400EX 400X Black Billet Cam Chain Tensioner Heavy Duty Chain Titanium Bolts

BPRATV

FITS ALL XR400R TRX400EX and TRX400X MODELS Heavy duty cam chain conversion Black billet cam chain tensioner Titanium chain tensioner bolts Chain ...

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$791.99
$791.99 - $791.99
$791.99
$59.99
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$59.99
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$699.99 - $699.99
$699.99
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$699.99

400EX 400X Top End Rebuild Hotcam Valves Springs Complete Stock Cylinder Kit

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW after market 85mm cylinder Wiseco CP or JE forged piston** Hi temp piston rings Wri...

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$699.99 - $699.99
$699.99
$699.99 - $699.99
$699.99
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$699.99

99-04 TRX 400EX 400X Complete Rebuilt Bottom End Engine Rebuild Kit 87mm Piston

BPRATV

FITS ALL 99-04 HONDA TRX 400EX MODELS Wiseco or Hotrods heavy duty crank with rod** Wiseco or Hotrods crank bearings Wiseco CP or JE 87mm forged h...

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$699.99 - $699.99
$699.99
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$525.99
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$525.99

99-04 TRX400EX WISECO Crank Bottom End Rebuild Kit Crankshaft Bearings BP Clutch

BPRATV

BPRATV / WISECO Bottom End Rebuild KitFITS ALL '99-04 HONDA 400EX MODELSWiseco replacement crankshaft with rod assembledSKF heavy duty replacement ...

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$525.99 - $525.99
$525.99
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$525.99
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$229.99
$229.99 - $229.99
$229.99
$199.98
$199.98 - $199.98
$199.98

Honda 400EX 400X XR400R OEM Timing Guide Tensioner & Chain Tensioner Cam Chain

Honda OEM

FITS ALL HONDA 400EX 400X XR400R MODELS AND YEARSGenuine Honda OEM cam chain guide - OEM Part # 14620-KCY-670Genuine Honda OEM cam chain tensioner ...

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$229.99
$229.99 - $229.99
$229.99
$199.98
$199.98 - $199.98
$199.98
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$768.74 - $768.74
$768.74
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$768.74

400EX 400X XR400R 87 mil Big Bore Kit Stage 3 Hotcam KPMI Springs Top End Kit

BPRATV

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

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$768.74 - $768.74
$768.74
$768.74 - $768.74
$768.74
$699.99 - $699.99
$699.99
$699.99 - $699.99
$699.99

05+ TRX 400EX 400X Complete Rebuilt Bottom End Engine Rebuild Kit 87mm Piston

BPRATV

FITS ALL '05+ HONDA TRX 400EX 400X MODELS Wiseco or Hotrods heavy duty crank with rod** Wiseco or Hotrods crank bearings Wiseco CP or JE 87mm for...

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$699.99 - $699.99
$699.99
$699.99 - $699.99
$699.99
$1,537.49 - $1,537.49
$1,537.49
$1,537.49 - $1,537.49
$1,537.49

05+ TRX400EX TRX 400EX 400X Big Bore Complete Motor Rebuild Valves Hotcam 87 mil

BPRATV

FITS ALL HONDA '05+ TRX400EX AND 400X MODELS AND YEARS NEW after market 87mm cylinder Wiseco JE or CP forged piston** Piston rings Wristpin Cir...

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$1,537.49 - $1,537.49
$1,537.49
$1,537.49 - $1,537.49
$1,537.49
$1,099.99 - $1,099.99
$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

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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$1,099.99 - $1,099.99
$1,099.99
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$199.99 - $199.99
$199.99
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$199.99

Best 400EX 400X XR400R Red Billet Cam Chain Tensioner Timing Guides Guide Kit

Honda OEM

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS Aftermarket heavy duty timing chain upgrade Red billet cam chain tensioner Chain tensioner g...

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$199.99
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$199.99
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$199.99
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$124.99
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$124.99

Best Honda TRX 400EX 400X Head Studs TITANIUM Cylinder Head Stud Bolt Kit Set

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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$199.99
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$199.99
$124.99
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$124.99
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$49.99 - $49.99
$49.99
$49.99 - $49.99
$49.99

Best 400EX 400X XR400R Black Billet Cam Chain Tensioner Heavy Duty Timing Chain

BPRATV

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS Aftermarket heavy duty timing chain upgrade Black billet cam chain tensioner Chain tensioner...

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$49.99 - $49.99
$49.99
$49.99 - $49.99
$49.99
$199.99 - $199.99
$199.99
$199.99 - $199.99
$199.99

Best 400EX 400X XR400R Billet Cam Chain Tensioner Timing Guides Guide Black Kit

Honda OEM

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS Aftermarket heavy duty timing chain upgrade Black billet cam chain tensioner Chain tensioner...

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$199.99 - $199.99
$199.99
$199.99 - $199.99
$199.99
$1,299.99 - $1,299.99
$1,299.99
$1,299.99 - $1,299.99
$1,299.99

05+ TRX 400EX 400X Big Bore Rebuild Kit 87mm +2 Top Bottom End Stage 2 Hotcam

BPRATV

FITS ALL HONDA 05+ TRX400EX AND 400X YEARS AND MODELS!  87mm after market cylinder Wiseco or JE forged piston** Hi temp piston rings Chrome wristp...

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$1,299.99 - $1,299.99
$1,299.99
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$1,299.99
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$1,299.99
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$1,299.99

05+ TRX 400EX 400X 89mm Big Bore Complete Motor Engine Rebuild Stage 2 Cam 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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$1,299.99 - $1,299.99
$1,299.99
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$1,299.99
$749.99 - $749.99
$749.99
$749.99 - $749.99
$749.99

05+ 400X 400EX Stroker Rebuild Kit Hotrods +4mm Crank Bottom End Assembly Repair

BPRATV

FITS ALL 2005+ HONDA 400EX AND 400X MODELS Hotrods +4mm stroker crankshaft assembly with rod Complete gasket kit MLS head gasket  Oil seal kit  Va...

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$749.99 - $749.99
$749.99
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$749.99
$494.06 - $494.06
$494.06
$494.06 - $494.06
$494.06

2005 TRX 400EX Stroker Crank Rebuild Kit Hotrods 4mm Crankshaft Bottom End Parts

BPRATV

FITS ALL 2005+ HONDA 400EX MODELS Hotrods +4mm crankshaft with rod assembled SKF heavy duty replacement crank bearings Complete gasket kit MLS he...

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$494.06 - $494.06
$494.06
$494.06 - $494.06
$494.06
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$202.39
$202.39 - $202.39
$202.39
$199.99
$199.99 - $199.99
$199.99

99-04 400EX OEM Cam Chain Guides 400X Black Billet Tensioner HD Chain Ti Bolts

BPRATV

WORKS ON ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS OEM Honda front and rear chain guides Aftermarket cam chain tensioner Aftermarket ...

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$202.39
$202.39 - $202.39
$202.39
$199.99
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$199.99
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$849.99 - $849.99
$849.99
$849.99 - $849.99
$849.99

05+ TRX 400X 400EX Stock Rebuilt Motor Engine Bottom End Rebuild Assembly Kit

BPRATV

FITS ALL '05+ HONDA 400EX AND 400X MODELS Hotrods or Wiseco HD crankshaft with rod Complete gasket kit MLS head gasket Complete seal kit Valve ste...

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$849.99 - $849.99
$849.99
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$849.99
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$124.99
$124.99 - $124.99
$124.99
$99.99
$99.99 - $99.99
$99.99

400EX 400X XR400R Ti Cylinder Case Studs Titanium Crankcase Stud Upgrade Kit Set

BPRATV

BPRATV - The Original Trailblazer for Titanium Hardware in the ATV Industry. THESE STUDS ARE TO MOUNT THE CYLINDER ON TO THE CASES.  THEY ARE NOT H...

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$124.99
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$124.99
$99.99
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$99.99
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$1,099.99 - $1,099.99
$1,099.99
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$1,099.99

99-04 TRX 400EX Rebuild Kit 87mm Big Bore Complete Top Bottom End Redo Parts Set

BPRATV

FITS ALL '99-04 HONDA 400EX MODELS 87mm after market cylinder Wiseco CP or JE 89mm forged piston**  Nitrite coated piston rings Chrome wristpin Ci...

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

99-04 TRX 400EX Big Bore 87 mil Complete Rebuilt Motor Engine Rebuild Parts Kit

BPRATV

FITS ALL 99-04 HONDA TRX400EX SPORTRAX MODELS NEW 87mm after market cylinder CP JE or Wiseco forged piston** Hi temp piston rings Wristpin Circlip...

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$1,099.99 - $1,099.99
$1,099.99
$1,099.99 - $1,099.99
$1,099.99
Sold out
$895.00
$895.00 - $895.00
$895.00
$795.00
$795.00 - $795.00
$795.00

400EX 400X Cylinder Head Rebuild Kit Stage 2 Hotcam Kibblewhite Valve Cover

BPRATV

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS!! Aftermarket cylinder head with valve cover Stage 2 Hotcam Cam bearings HD timing c...

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$895.00
$895.00 - $895.00
$895.00
$795.00
$795.00 - $795.00
$795.00
Sold out
$849.99 - $849.99
$849.99
$849.99 - $849.99
$849.99

99-04 TRX400EX TRX 400EX Rebuilt Motor Engine Bottom End Rebuild Assembly Kit

BPRATV

FITS ALL '99-04 HONDA 400EX MODELS Hotrods or Wiseco HD crankshaft with rod Complete gasket kit MLS head gasket Complete seal kit Valve stem seals...

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$849.99 - $849.99
$849.99
$849.99 - $849.99
$849.99
$1,099.99 - $1,099.99
$1,099.99
$1,099.99 - $1,099.99
$1,099.99

05+ TRX 400EX 400X Rebuild Kit Complete Top Bottom End Motor Engine Assembly Set

BPRATV

FITS ALL 05+ HONDA 400EX AND 400X MODELS NEW after market cylinder CP JE or Wiseco forged piston** Hi temp piston rings Chrome wristpin Circlips H...

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$1,099.99 - $1,099.99
$1,099.99
$1,099.99 - $1,099.99
$1,099.99
Save 15% Save %
$1,294.11
$1,294.11 - $1,294.11
$1,294.11
$1,099.99
$1,099.99 - $1,099.99
$1,099.99

99-04 TRX 400EX Complete Rebuilt Motor Engine Rebuild Top & Bottom End Parts Kit

BPRATV

FITS ALL 99-04 HONDA TRX400EX SPORTRAX MODELS NEW after market cylinder CP JE or Wiseco forged piston** Hi temp piston rings Wristpin Circlips Hotr...

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$1,294.11
$1,294.11 - $1,294.11
$1,294.11
$1,099.99
$1,099.99 - $1,099.99
$1,099.99
Save 15% Save %
$499.99 - $499.99
$499.99
$499.99 - $499.99
$499.99

99-04 TRX 400EX Stroker Crank Rebuild Kit Hotrods 4mm Crankshaft Bottom End Part

Hot Rods

FITS ALL '99-04 HONDA 400EX MODELS Hotrods +4mm crankshaft with rod assembled SKF heavy duty replacement crank bearings Complete gasket kit MLS h...

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$499.99 - $499.99
$499.99
$499.99 - $499.99
$499.99
Save 15% Save %
$649.99
$649.99 - $649.99
$649.99
$549.99
$549.99 - $549.99
$549.99

400EX 400X TRX400EX 87mm Big Bore Kit Stage 2 Hotcam Camshaft Complete Top End

BPRATV

FITS ALL HONDA 1999 AND NEWER TRX400EX AND 400X YEARS AND MODELS!   87mm after-market cylinder CP JE Wiseco or Wossner forged piston ...

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$649.99
$649.99 - $649.99
$649.99
$549.99
$549.99 - $549.99
$549.99
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