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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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$59.99
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$49.98
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$49.98

TRX400EX 400EX Timing Guide Guides Tensioner Chain Tensioner BPRATV HD Cam Chain

BPRATV

FITS ALL HONDA 400EX 400X XR400R MODELS AND YEARSAftermarket Cam chain guide - Replaces OEM Part # 14620-KCY-670Aftermarket Cam cam chain tensioner...

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$59.99
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TRX 400EX 400X XR400 Cam Timing Chain Heavy Duty Conversion Bigger Upgrade Honda

BPRATV

FITS ALL HONDA 400EX, 400X, AND XR400R MODELS AND YEARS OEM AND ALL OTHER AFTERMARKET CHAINS HAVE A STRENGTH RATING OF 82 - OURS IS 92.  IT IS STR...

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$49.99
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$881.15
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400EX Ported Cylinder Head Porting Assembled Valve Full Port Head Kibble Valves

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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$881.15
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$699.99
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Honda TRX400EX TRX 400EX Cylinder Head Rebuild Kit Stock Bore Top End Assembly

BPRATV

FITS ALL HONDA TRX400EX, 400X MODELS AND YEARS Genuine BPRATV aftermarket cylinder head Cylinder head valve cover 85mm cylinder Wiseco or W...

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$699.99
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Best Honda TRX 400EX 400X Heavy Duty Cam Chain Timing Chain Conversion Stronger

BPRATV

14620-KCY-670, 14511-KCY-670, 14401-KCY-671, 14520-KCY-671,CC004,HC82RH2010112BPRATV Talon heavy-duty conversion timing chainMuch stronger than any...

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New Honda TRX 400EX 400X Cylinder Head Valve Cover Complete Assembly Gaskets

BPRATV

FITS ALL HONDA TRX400EX, 400X MODELS AND YEARS Genuine BPR aftermarket cylinder head Cylinder head valve cover Valve cover and head gaskets...

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TRX 400EX 400X Assembled Head Assembly Complete Kibblewhite Valves Rocker Arms

BPRATV

FITS ALL XR400R TRX400EX and TRX400X MODELS New aftermarket cylinder head and valve cover Kibblewhite lightweight race valve spring kit Kibblewhi...

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$725.00
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TRX 400EX 400X Assembled Head Assembly Complete Std Valve Springs Rocker Arms

BPRATV

FITS ALL XR400R TRX400EX and TRX400X MODELS New aftermarket cylinder head and valve cover Valve springs, retainers, and collars Standard replaceme...

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TRX 400EX 400X Assembled Head Complete Assembly Valves Rockers Stage 2 Hotcam

BPRATV

FITS ALL HONDA 400EX 400X XR400R MODELS AND YEARS All parts are aftermarket Cylinder head assembly Valve cover assembly Valves, springs, rocker ar...

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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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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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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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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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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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$699.99
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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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$1,799.99
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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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$1,299.99
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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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400EX Ported Cylinder Head Porting Assembled +1 Valves Kibblewhite 1mm Valve Kit

BPRATV

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

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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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400EX 400X XR400 KIbblewhite Valves Valve Springs Cylinder Head Valve Cover Kit

Kibblewhite Precision

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS!! Aftermarket cylinder head with valve cover Kibblewhite lightweight race valve spri...

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$599.99
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$351.23
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$316.11
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99-04 Honda TRX 400EX Wiseco Heavy Duty Billet Clutch Basket Fibers Springs Kit

Wiseco

Feel the power under your thumb with the Wiseco Heavy Duty Billet Clutch Basket Kit for 99-04 Honda TRX 400EX. This race-ready clutch upgrade gives...

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$351.23
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Honda TRX400EX TRX 400EX Genuine OEM NTN Crankshaft Bearings PAIR 91001-KF0-018

Honda OEM

Stop Your ATV in its Tracks with Genuine Honda TRX400EX Crankshaft Bearings Genuine Honda OEM parts ensure proper fit and performance Set of 2 high...

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$159.50
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$23.69
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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
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TRX400EX TRX 400EX Head Cylinder 87 mil Big Bore Kit Cover Top End Rebuild

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS New after-market cylinder head - NO VALVES OR SPRINGS HEAD ONLY Aftermarket cylinder he...

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$999.99
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Honda Sportrax 400 TRX 400EX Stock Bore 85mm 10:1 Aftermarket Piston Kit

BPRATV

FITS ALL HONDA SPORTRAX TRX 400EX YEARS AND MODELS!! BUY IN BULK AND SAVE!! Standard Aftermarket 85mm 10:1 piston Piston rings Wristpin Circlips ...

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Port 400EX 400X Cylinder Head Ported Porting Assembled Kibblewhite Valves Spring

BPRATV

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

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$1,199.99 - $1,199.99
$1,199.99
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TRX 400EX 400X Cylinder Head Assembly Assembled Head Valves Springs Rocker Arms

BPRATV

Brand new aftermarket cylinder head and valve cover Complete assembly of both head and valve cover except camshaft Valve springs, retainers, and ...

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$749.99 - $749.99
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$699.99
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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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$699.99
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$1,099.99
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Honda 400EX 400X Port Ported Head Porting Assembly Assembled Kibblewhite Valves

BPRATV

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

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$1,099.99 - $1,099.99
$1,099.99
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$799.99
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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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$799.99
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TRX 400EX 400X Cylinder Head Valves Assembled Kibblewhite Valve Springs Rockers

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW after market cylinder head and valve cover Complete head assembly Kibblewhite valve ...

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$899.99 - $899.99
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TRX 400X 400EX Stock Bore Cylinder Head Valve Cover Standard 85mm Top End Kit

Wiseco

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS Brand new aftermarket cylinder head - NO VALVES OR SPRINGS HEAD ONLY Cylinder head val...

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$799.99
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Honda TRX 400EX 400X 87mm Big Bore Kit +2 Cylinder Head Assembly Top End Repair

BPRATV

FITS ALL HONDA TRX400EX, 400X MODELS AND YEARS Genuine BPR aftermarket cylinder head Cylinder head valve cover 87mm cylinder Wiseco or Woss...

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$799.99
$799.99 - $799.99
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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...

View full details
$1,799.99
$1,799.99 - $1,799.99
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$1,699.99
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$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
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05+ 400EX 400X Complete Motor Engine Cylinder Head Rebuilt Rebuild Assembly Kit

BPRATV

Works on all 2005+ Honda 400EX and 400X models 85mm stock bore cylinder 85mm stock bore Wiseco or Wossner forged piston Nitrite-coated piston rin...

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$1,799.99
$1,799.99 - $1,799.99
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