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Honda TRX400EX

Honda 400EX Rebuild Kits, Pistons, and Parts

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$997.69
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Honda 400EX 400X 88mm +3 Big Bore Kit Stage 2 Cam 426cc Top End Rebuild 2 Hotcam

BPRATV

Works on all Honda 400EX, 400X, and XR400R models and years 88mm heavy-duty big bore cylinder 88mm big bore Wiseco or Wossner forged piston Nitrite...

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$997.69
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get best honda 400ex 89mm big bore hotcam near me Sold out
$692.99
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$692.99
$539.99
$539.99 - $539.99
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400EX 400X XR400 89m 440 Big Bore Kit Stage 3 Hotcam 1051-3 Cam Top End Redo Kit

BPRATV

FITS ALL HONDA TRX400EX, XR400, AND 400X YEARS AND MODELS!  89mm after market cylinder Wiseco, JE, CP forged piston* Hi temp piston rings Chrome wr...

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$692.99
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$539.99
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$449.99
$449.99 - $449.99
$449.99
$332.48
$332.48 - $332.48
$332.48

Honda 400EX 400X 88mm Big Bore Kit +3 Cylinder Piston 426cc Upper Assembly Parts

BPRATV

Works on all Honda 400EX, 400X, and XR400R models and years 88mm heavy-duty big bore cylinder 88mm big bore Wiseco or Wossner forged piston Nitrite...

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$449.99
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$449.99
$332.48
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$461.99
$461.99 - $461.99
$461.99
$427.49
$427.49 - $427.49
$427.49

400EX 400X XR400 88mm Big Bore Kit +3 Cylinder 426 Top End Rebuild Redo Parts

Hotrods

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW aftermarket 88mm cylinder Forged Wiseco, JE, or CP piston** Hi temp piston rings Ch...

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$461.99
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$427.49
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$449.99
$449.99 - $449.99
$449.99
$332.49
$332.49 - $332.49
$332.49

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

BPRATV

Works on all Honda 400EX, 400X, and XR400R models and years 87mm heavy-duty big bore cylinder 87mm big bore Wiseco or Wossner forged piston Nitri...

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$449.99
$449.99 - $449.99
$449.99
$332.49
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$332.49
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$569.99 - $569.99
$569.99
$569.99 - $569.99
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TRX400EX TRX 400EX 400X 87mm Big Bore Hi Comp 11:1 Piston Stage 2 Cam Parts Kit

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS  NEW after market 87mm cylinder11:1 Wiseco CP Wiseco or JE forged pistonHi temp piston r...

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$569.99 - $569.99
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$599.99
$599.99 - $599.99
$599.99
$519.99
$519.99 - $519.99
$519.99

Honda 400EX 400X 88mm +3 Big Bore Kit Stage 3 Cam 426cc Top End Rebuild Hotcam

BPRATV

Works on all Honda 400EX, 400X, and XR400R models and years 88mm heavy-duty big bore cylinder 88mm big bore Wiseco or Wossner forged piston Nitrite...

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$599.99
$599.99 - $599.99
$599.99
$519.99
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$519.99
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$1,139.99 - $1,139.99
$1,139.99
$1,139.99 - $1,139.99
$1,139.99

99-04 TRX 400EX Sportrax 89m Big Bore Rebuild Kit +4 Complete 440 Stage 3 Hotcam

BPRATV

FITS ALL '99-04 TRX400EX MODELS 89mm after market cylinder Wiseco CP or JE 89mm forged piston**  Nitrite coated piston rings Chrome wristpin Circl...

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$1,139.99 - $1,139.99
$1,139.99
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$714.99
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$714.99
$624.98
$624.98 - $624.98
$624.98

Honda 400EX 400X 87mm Big Bore Kit Valves Springs Stage 2 Hotcam +2 416c Top End

BPRATV

The Best Big Bore Honda TRX400EX Top End Rebuild You will find. BPRATV 87mm Big Bore Cylinder (1 Year Warranty) Wiseco or Wossner forged piston Hi ...

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$714.99
$714.99 - $714.99
$714.99
$624.98
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$749.99
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$617.49
$617.49 - $617.49
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Honda 400EX 400X 88mm Big Bore Kit Valves Springs Stage 2 Hotcam +3 426c Top End

BPRATV

88mm cylinder Wiseco or Wossner forged piston Hi-temp piston rings Chrome wrist pin Circlips Cometic top-end gasket kit Hotcams Stage 2 Camsh...

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$749.99
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$749.99
$617.49
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$384.99
$384.99 - $384.99
$384.99
$242.67
$242.67 - $242.67
$242.67

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

Hot Rods

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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$384.99
$384.99 - $384.99
$384.99
$242.67
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$749.99
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$749.99
$617.49
$617.49 - $617.49
$617.49

Honda 400EX 400X 89mm Big Bore Kit Valves Springs Stage 3 Hotcam Hot Cam 440cc

BPRATV

89mm cylinder 89mm Wiseco or Wossner forged piston Hi-temp piston rings Chrome wrist pin Circlips Cometic top-end gasket kit Hotcams Stage 3 ...

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$749.99
$749.99 - $749.99
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$617.49
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$493.99 - $493.99
$493.99
$493.99 - $493.99
$493.99

Honda 400EX 400X 87mm +2 Big Bore Kit Stage 3 Hotcam 416cc Top End Rebuild Kit

BPRATV

Works on all Honda 400EX, 400X, and XR400R models and years 87mm heavy duty big bore cylinder 87mm big bore Wiseco or Wossner forged piston Nitri...

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$493.99 - $493.99
$493.99
$493.99 - $493.99
$493.99
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$1,299.99
$1,299.99 - $1,299.99
$1,299.99
$1,199.99
$1,199.99 - $1,199.99
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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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$1,199.99
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$449.99
$449.99 - $449.99
$449.99
$394.98
$394.98 - $394.98
$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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$449.99
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$449.99
$394.98
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$394.98
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$1,264.95
$1,264.95 - $1,264.95
$1,264.95
$379.99
$379.99 - $379.99
$379.99

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

Hotcams

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

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$1,264.95
$1,264.95 - $1,264.95
$1,264.95
$379.99
$379.99 - $379.99
$379.99
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$999.99
$999.99 - $999.99
$999.99
$767.98
$767.98 - $767.98
$767.98

Honda TRX 400EX Assembled Cylinder Head Stage 3 Hot Cams Chain Big Bore Cometic

BPRATV

Revitalize your Honda TRX400EX with a powerful new cylinder head and valve train from BPRATV.Key features: Complete assembled cylinder head with va...

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$999.99
$999.99 - $999.99
$999.99
$767.98
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$767.98
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$281.46
$281.46 - $281.46
$281.46
$213.29
$213.29 - $213.29
$213.29

Honda 400EX 400X Wiseco 88mm BIG BORE 10:1 Piston COMETIC Top End Gasket Kit MLS

Wiseco

Honda TRX 400EX 426cc Wiseco 88mm Big Bore 10:1 Compression Piston & Cometic Top End Gasket KitFits Honda TRX 400EX & 400XYears 1999 2000 2...

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$281.46
$281.46 - $281.46
$281.46
$213.29
$213.29 - $213.29
$213.29
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$316.99
$316.99 - $316.99
$316.99
$245.95
$245.95 - $245.95
$245.95

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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$316.99
$316.99 - $316.99
$316.99
$245.95
$245.95 - $245.95
$245.95
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$426.90
$426.90 - $426.90
$426.90
$380.23
$380.23 - $380.23
$380.23

Honda TRX400EX TRX 400EX 400X Stage 3 Three Hotcams Cam & Hotcams Timing Chain

Hot Rods

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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$426.90
$426.90 - $426.90
$426.90
$380.23
$380.23 - $380.23
$380.23
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$374.99
$374.99 - $374.99
$374.99
$223.41
$223.41 - $223.41
$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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$374.99
$374.99 - $374.99
$374.99
$223.41
$223.41 - $223.41
$223.41
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$999.99
$999.99 - $999.99
$999.99
$831.24
$831.24 - $831.24
$831.24

TRX 400EX 400X 88mm Big Bore Kit Stage 3 Cam Kibblewhite Valves Springs Hotcam

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW after market 88mm cylinder Wiseco or JE forged piston** Nitrite coated piston rings ...

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$999.99
$999.99 - $999.99
$999.99
$831.24
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$831.24
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$999.99
$999.99 - $999.99
$999.99
$807.49
$807.49 - $807.49
$807.49

TRX400EX TRX 400EX 88mm Big Bore Stage 2 Cam +1 Valves +3 Cylinder Hotcam KPMI

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW after market 88mm cylinder Wiseco or JE forged piston* Nitrite coated piston rings C...

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$999.99
$999.99 - $999.99
$999.99
$807.49
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$807.49
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$89.99
$89.99 - $89.99
$89.99
$68.98
$68.98 - $68.98
$68.98

Honda TRX400EX TRX 400EX Kibblewhite Head Rebuild +1mm Exhaust Valves & Seals

Kibblewhite Precision

Complete Set Of Kibblewhite Performance +1mm Larger EXHAUST Valves (Pair)The Best On The Market!Fits Honda TRX 400EX & 400X Years 1999 2000 200...

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$89.99
$89.99 - $89.99
$89.99
$68.98
$68.98 - $68.98
$68.98
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$1,129.99
$1,129.99 - $1,129.99
$1,129.99
$750.49
$750.49 - $750.49
$750.49

99-04 400EX 400 EX 88mm Simple Rebuild Kit Wossner Piston Complete Gaskets Seals

Wossner

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 88mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$1,129.99
$1,129.99 - $1,129.99
$1,129.99
$750.49
$750.49 - $750.49
$750.49
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$1,129.99
$1,129.99 - $1,129.99
$1,129.99
$750.49
$750.49 - $750.49
$750.49

99-04 400EX 400 EX 88mm Simple Rebuild Kit Wiseco Piston Complete Gaskets Seals

Hotrods

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 88mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$1,129.99
$1,129.99 - $1,129.99
$1,129.99
$750.49
$750.49 - $750.49
$750.49
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$1,099.99
$1,099.99 - $1,099.99
$1,099.99
$731.49
$731.49 - $731.49
$731.49

99-04 400EX 400 EX 87mm Simple Rebuild Kit Wiseco Piston Complete Gaskets Seals

Hotrods

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 87mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$1,099.99
$1,099.99 - $1,099.99
$1,099.99
$731.49
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$1,119.99
$1,119.99 - $1,119.99
$1,119.99
$730.54
$730.54 - $730.54
$730.54

99-04 400EX 400 EX 87mm BPR Simple Rebuild Kit CP Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 87mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$1,119.99
$1,119.99 - $1,119.99
$1,119.99
$730.54
$730.54 - $730.54
$730.54
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$1,119.99
$1,119.99 - $1,119.99
$1,119.99
$730.54
$730.54 - $730.54
$730.54

05-14 400EX 400 EX 87mm BPR Simple Rebuild Kit CP Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 87mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$1,119.99
$1,119.99 - $1,119.99
$1,119.99
$730.54
$730.54 - $730.54
$730.54
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$999.99
$999.99 - $999.99
$999.99
$683.04
$683.04 - $683.04
$683.04

99-04 400EX 400 EX 87mm Simple Rebuild Kit Wossner Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 87mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$999.99
$999.99 - $999.99
$999.99
$683.04
$683.04 - $683.04
$683.04
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$999.99
$999.99 - $999.99
$999.99
$683.04
$683.04 - $683.04
$683.04

05-14 400EX 400 EX 87mm Simple Rebuild Kit Wossner Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 87mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$999.99
$999.99 - $999.99
$999.99
$683.04
$683.04 - $683.04
$683.04
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$1,029.99
$1,029.99 - $1,029.99
$1,029.99
$759.98
$759.98 - $759.98
$759.98

05-14 400EX 400 EX 89mm Simple Rebuild Kit Wiseco Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 89mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$1,029.99
$1,029.99 - $1,029.99
$1,029.99
$759.98
$759.98 - $759.98
$759.98
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$1,129.99
$1,129.99 - $1,129.99
$1,129.99
$750.49
$750.49 - $750.49
$750.49

05-14 400EX 400 EX 88mm Simple Rebuild Kit Wiseco Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 88mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

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$1,129.99
$1,129.99 - $1,129.99
$1,129.99
$750.49
$750.49 - $750.49
$750.49
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$1,099.99
$1,099.99 - $1,099.99
$1,099.99
$731.49
$731.49 - $731.49
$731.49

05-14 400EX 400 EX 87mm Simple Rebuild Kit Wiseco Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (Big Bore 87mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no one...

View full details
$1,099.99
$1,099.99 - $1,099.99
$1,099.99
$731.49
$731.49 - $731.49
$731.49
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$289.99
$289.99 - $289.99
$289.99
$198.53
$198.53 - $198.53
$198.53

TRX400EX 400EX 400X 88mm 11:1 JE Piston Cometic Gaskets Kit Top End Rebuild Seal

BPRATV

JE 88mm 11:1 426cc Big Bore Piston Kit & Cometic Top End Gasket SetFits Honda TRX400EX, TRX400X, and XR400Years 1999 2000 2001 2002 2003 2004 2...

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$289.99
$289.99 - $289.99
$289.99
$198.53
$198.53 - $198.53
$198.53
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$1,264.95
$1,264.95 - $1,264.95
$1,264.95
$546.24
$546.24 - $546.24
$546.24

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 shafts...

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$1,264.95
$1,264.95 - $1,264.95
$1,264.95
$546.24
$546.24 - $546.24
$546.24
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