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SHIPPING UPDATE: Due to high demand, orders are currently processing in 5-7 business days. Need it faster? Contact us to upgrade to expedited shipping! If you’ve found the item elsewhere or can’t wait, no problem—we completely understand. Just reach out to us, and we’ll cancel your order. Thanks for your patience and support! BRAPPPPPPPPPP!

Honda TRX400EX

Honda 400EX Rebuild Kits, Pistons, and Parts

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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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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...

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99-08 Honda TRX400EX TRX 400EX 09-14 TRX 400X Hot Rods Connecting Rod Kit 8609

Hot Rods

Hot Rods Connecting Rod Kit Works for Honda 1999-2008 Sportrax 400EX / 2009-2014 TRX 400X Models A High Quality Replacement Part Designed to Imp...

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99-14 TRX400EX 400EX 400X 87mm 12:1 Hi Comp 416cc JE Piston Cometic Gaskets Kit

JE Pistons

JE 87mm 12:1 416cc 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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Honda 400EX OEM Stock Cylinder 85mm Wiseco Piston 10:1 Cometic Gasket KPMI Viton

BPRATV

Genuine Honda OEM Stock Bore 85mm Cylinder | 12100-KCY-670  Wiseco 85mm 10:1 Compression Piston | 4606M08500 Nitrite-coated piston rings | 3386XC ...

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Honda 400EX OEM Big Bore 86mm Cylinder Wiseco Piston Kit 10:1 Cometic Gasket Kit

BPRATV

Genuine Honda OEM BIG BORE 86mm Cylinder | 12100-KCY-670  Bored & Diamond Honed New OEM Cylinder Wiseco 86mm 10:1 Compression Piston | 4606M08...

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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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CP-Carrillo 96-09 Honda XR400R 96-16 TRX 400EX 11.5:1 89mm 435cc Piston Kit

CP-Carrillo

CP-Carrillo 96-09 Honda XR400R 96-16 TRX 400EX 11.5:1 89mm 435cc Piston Kit Technical Specifications: - Made from high-strength, extruded aerospa...

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CP Carrillo Honda XR400R 400X 96-16 TRX400EX 11:1 85mm STD Bore Piston Kit M2003

CP-Carrillo

CP-Carrillo 96-09 Honda XR400R 96-16 TRX 400EX 11:1 85mm STD Bore Piston Kit CP Carrillo Part # M2003 (Includes Rings, Wristpin, and Circlips)85m...

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Honda TRX400EX TRX 400EX 400X OEM Extreme Heavy Duty Hotcam Hot Cam Timing Chain

Hot Cams

Brand New Direct Replacement HotCams Heavy Duty Timing Chain Fits Honda TRX400EX and TRX400X Replaces OEM# 14401-KCY-671 Years 1999 2000 2001 2...

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Honda 400EX XR400 87mm 416cc Big Bore Wiseco Piston Replacement Rings Set 3425XC

Wiseco

Honda 400EX / 400X / XR400 87mm Wiseco Big Bore Piston Replacement Rings KitPart# 3425XCThese rings are for Wiseco Piston Part #'s 4606M08700 &...

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Honda 05+ TRX 400EX 400 OEM Replacement Transmission NTN Bearing 91004-HN1-A41

NTN

NTN 91004-HN1-A41 2005+ TRX400EX XR400 OEM Replacement Transmission BearingReplaces OEM Part Number: 91004-HN1-A41TM-SC0357-LUA-C3-NTNItem only fit...

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TRX400EX TRX 400EX 87 mil Big Bore 416 Cylinder Complete Rebuilt Top End Rebuild

BPRATV

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

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TRX400EX TRX 400EX Cylinder Stock Bore Top End Rebuild Hot Cam Bearings Complete

BPRATV

1043-2, M2003, 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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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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TRX400EX TRX 400EX 400X 88mm Big Bore Cylinder Kit 426 Top End Rebuild Complete

BPRATV

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

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TRX400EX 400EX 400X 87 mil Big Bore Cylinder Kit Complete 416 Top End Rebuild

BPRATV

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

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TRX400EX TRX 400EX Cam Timing Chain Red Tensioner Dampener Lifter Top End Gasket

Honda OEM

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS After market heavy duty cam chain conversion Cam chain dampener 1 and 2 Red billet cam c...

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TRX400EX TRX 400EX XR400 Wiseco Piston 10:1 Stock Bore 85mm 85 mil Rings Kit

BPRATV

FITS ALL HONDA TRX400EX, 400X MODELS AND YEARS Includes one 85mm 10:1 Wiseco piston with rings, pin, and clips for all 400EX/X/XR models and years...

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TRX400EX TRX 400EX XR400 87 mil Big Bore Kit 416 Cylinder Top End Rebuild 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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TRX400EX TRX 400EX Cylinder Namura Top End Piston Rebuild Kit Stock 85 mil 11:1

BPRATV

TOP END REBUILD FROM THE BEST!  CALL TO ORDER OR WITH ANY QUESTIONS!  SE HABLA ESPANOL FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS ...

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TRX400EX TRX 400EX Stage 2 Hotcam Cylinder Wiseco Piston Top End Rebuild 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 Wris...

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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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TRX400EX TRX 400EX 89 mil 440 JE Big Bore Piston +4 Hi Comp Pump Gas Head Studs

BPRATV

FITS ALL HONDA XR400R TRX400EX AND 400X MODELS AND YEARS  - 89mm JE forged piston  - JE Hi temp piston rings  -Chrome wristpin  - Circlips  - Max...

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TRX400EX TRX 400EX 89mm Big Bore Stage 3 Hotcam Camshaft 440 Top End Rebuild Kit

BPRATV

4794M08900,C7826,12100-KCY-670,208552,1051-3,3P-440,C7826-EST,HC92RH2015112,DPR8Z,, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826...

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Racing Valve Spring Kit Kibblewhite 30-3111 For 99-14 Honda TRX400EX TRX400X

Kibblewhite Precision

Type Intake / Exhaust Retainer Material Titanium Valve Lift 0.300” Installed Height 1.375" Seat Pressure 70# Open Pressure 157# @ Lif...

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Honda TRX 400EX Sportrax Titanium Lug Nuts Front Rear Wheel Ti Lug Nut Set of 4

BPRATV

YOUR BEST ONLINE SOURCE FOR HARD TO FIND TITANIUM LUG NUTS!  SAVE BIG WHEN YOU BUY IN BULK!Honda TRX 400EX Sportrax Lug Nuts4-Pack of Titanium 12 p...

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New Honda TRX400EX Sportrax 89mm Big Bore 87 88 89 .027" MLS Cometic Head Gasket

Cometic Gaskets

FITS ALL HONDA 400EX MODELS AND YEARS!89mm Head Gasket for all 400EX Big Bore CylindersPatented MLS Multi-Layer Steel ConstructionMADE IN USABuy in...

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Honda TRX 400EX Sportrax Titanium Lug Nuts For All Wheels Front Rear Nut Set 16

BPRATV

YOUR BEST ONLINE SOURCE FOR HARD TO FIND TITANIUM LUG NUTS!  SAVE BIG WHEN YOU BUY IN BULK!Honda TRX 400EX Sportrax Lug Nuts16-Pack of Titanium 12 ...

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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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99-04 400EX Rebuilt Motor Engine Assembly 87mm Big Bore Ported Assembled Head

BPRATV

COMPLETE BUILT BIG BORE MOTOR!Used core bottom end with all BRAND NEW parts listed below87mm big bore cylinder 87mm Wiseco forged piston Piston rin...

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Honda 400EX 400X 89mm Piston Wiseco Big Bore +4 Over Piston Cometic Gasket Kit

BPRATV

Works on all Honda 400EX, 400X, and XR400R models and years Wiseco 89mm big bore forged piston Nitrite coated piston rings Chrome wristpin Circli...

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$207.97
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Honda 400EX 400X 88mm Piston Wiseco Big Bore +3 Over Piston Cometic Gasket Kit

Wiseco

Works on all Honda 400EX, 400X, and XR400R models and yearsWiseco 88mm big bore forged pistonNitrite-coated piston ringsChrome wrist-pinCirclipsCom...

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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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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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*TRX 400EX 400X Webcam Web Cam Kibblewhite +1 Valves Valve Springs Head Redo Kit

BPRATV

FITS ALL HONDA TRX400EX, XR400, AND 400X YEARS AND MODELS!  Webcam custom grind high performance camshaft Kibblewhite race valve spring kit Kibb...

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