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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!

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400 EX / X
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$33.34
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$29.99
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$29.99

Honda TRX400EX 400EX 87 88mm 89mm Big Bore Cometic MLS Head Gasket 12251-HN1-A41

Cometic Gaskets

C7825, XC8500, 3347XC,4606M08500, 4628M08500, 12191-KCY-671, 12191-KCY-672, 12251-HN1-A41, H0401027S, 12191-KCY-671, 810829,810829MSE, 91302-356-00...

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$377.19
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$314.86
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18-24 CRF250R CRF 250R Kibblewhite Intake & Exhaust Valves & TITANIUM Spring Kit

Kibblewhite Precision

30-33612, 30-33616, 30-33612T, 30-33616K, 14711-K95-A20, 14721-K95-A20, 12209-GB4-681, 14751-K95-AA1, 14752-K95-AA1, 14775-K95-AA0, 14771-K95-AA0, ...

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$451.49
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CRF150R Kibblewhite Cylinder Head Service Kit Springs Valves Guides Gaskets Kit

Kibblewhite Precision

30-33430, 30-30880, 30-30910, 30-30913, 30-30890, 30-30900, 71014-4, 14711-KSE-670, 14721-KSE-670, 12208-ML0-721, 14711-KSE-670, 14721-KSE-670, 147...

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$21.99
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99+ Honda TRX400EX TRX 400EX 400X Head Valve Stem Guide Seals RED Seals Set of 4

Kibblewhite Precision

Complete Set of Kibblewhite Hi-Temp RED Viton Valve Stem Seals (4)Fits Honda 400EX and XR400 ALL YEARSBetter then OEM for Less $$$!!Replaces Honda ...

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$367.05
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86-95 Honda XR250R XR 250 KIBBLEWHITE Intake Exhaust Valves Spring Kit RED Seals

Kibblewhite Precision

Kibblewhite Performance OEM Size Replacement Intak & Exhaust Valves, Spring Kit and KPMI RED Viton valve guide sealsThe Best On The Market!Fits...

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$35.99
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CNC Billet Black Front A-Arm Brake Line Clamps Honda TRX250R TRX 250R TRX450R ER

BPRATV

Elevate the style and performance of your Honda ATV with our premium Billet Black Front A-Arm Brake Line Clamps.Key features: Made from durable bil...

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$69.90
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86-89 Honda TRX250R TRX 250R Main Crankshaft Bearings SKF & ProX Crank Seals Kit

Pro-X

Crank Up Your 250R's Performance With New Main Bearings & Seals!Fits 86-89 Honda TRX250R and 85-86 ATC250R Replace worn crankshaft bearings &am...

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$184.16
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16 17 CRF250R CRF 250R KIBBLEWHITE Intake Exhaust Valves RED Seals & Head Gasket

Kibblewhite Precision

Complete Set Of Kibblewhite Performance OEM/Stock Size Replacement Valves and MLS Head Gasket!The Best On The Market!Fits Honda CRF250R Years 2016 ...

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$146.52
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13-16 Honda CRF450R CRF 450R Kibblewhite Head Intake Exhaust Valves KP RED Seals

Kibblewhite Precision

Kibblewhite Performance OEM/Stock Size Replacement Valves (All 4) and Kibblewhite Hi Temp RED Viton Valve Stel SealsThe Best On The Market!Fits Hon...

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$281.46
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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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85-89 Honda ATC250R TRX ATC 250R TRX250R Wiseco Heavy Duty Billet Clutch Basket

Wiseco

Heavy Duty Wiseco Race Billet Clutch BasketFits Honda ATC250R & TRX250RYears 1985 1986 1987 1988 1989 Wiseco clutch baskets are engineered, for...

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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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16-17 CRF250R 250R Kibblewhite Complete Head Rebuild Kit Valves Springs Gaskets

Kibblewhite Precision

Revive Your CRF250R with a Complete Head Rebuild for Maximum Power!Key Features/Benefits:- Complete valvetrain refresh kit for 2016 & 2017 CRF2...

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$768.99
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05-14 400EX 400 EX 89mm BPR Simple Rebuild Kit CP 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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$999.99
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05-14 400EX 400 EX Stock Simple Rebuild Kit Wiseco Piston Complete Gaskets Seals

BPRATV

Honda TRX 400EX 400X Simple Rebuild Kit (Stock Bore 85mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say no o...

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99-14 TRX400EX 400EX 400X XR400 89mm 10.8:1 440cc JE Piston Cometic Gaskets Kit

JE Pistons

JE 89mm 10.8:1 416cc Big Bore Piston Kit & Cometic Top End Gasket SetFits Honda TRX400EX, TRX400X, and XR400Years 1999 2000 2001 2002 2003 2004...

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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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06+ TRX450R Cylinder Head Top End Rebuild Kit Kibblewhite Valves Springs 96mm

BPRATV

Stock bore cylinder Wiseco or Wossner stock bore piston Hard coated piston rings Chrome wristpin Circlips Top end gasket kit  MLS head gasket OEM H...

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04 05 TRX450R Ported Cylinder Head Assembly Stage 3 Hotcam Kibblewhite Valves

Hot Cams

Used OEM cylinder head Inspected, cleaned, sandblasted Full race port & polish Intake, exhaust, combustion chamber Valve guides cut to match p...

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$1,999.99
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04 05 TRX450R 97mm Big Bore Rebuild Kit Stage 2 Hotcam Complete Top Bottom End

BPRATV

FITS ALL 04-05 HONDA TRX450R MODELS! 97mm big bore cylinder Hotrods or Wiseco crank with rod**HD crank bearings Crank balancer bearings Transmis...

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$138.99
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Best 400EX 400X XR400 Cylinder Head Studs ALL TITANIUM Stud Bolt Nut Upgrade Kit

BPRATV Talon Titanium

Works on all Honda 400EX 400X and XR400R models and years All Grade 5 Titanium Alloy kit Heat treated, allen head studs 12 point flange nuts and 3...

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$138.99
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$571.99
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Best TRX 400EX 400X Wheel Bearings Complete Left Right Front Hub Bearing Kit Set

SKF

FITS ALL HONDA TRX400EX AND 400X YEARS AND MODELS!  SKF set of 4 front wheel bearings Replacement for both left and right front hubs Better than O...

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06+ TRX 450R 450ER 99mm Big Bore Kit +3 488cc Cylinder Top End Rebuild Assembly

BPRATV

FITS ALL 06+ HONDA TRX450R AND TRX450ER MODELS! BPR 99mm big bore cylinder 99mm CP or Wiseco forged big bore piston** Nitrite coated piston rings D...

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$764.69
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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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$494.06
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02-08 CRF450R CRF 450R Kibblewhite Valve Springs Guides Complete Head Repair Kit

Kibblewhite Precision

FITS 02-08 CRF450R models! Kibblewhite chrome silicone race valve springs Titanium retainers Heat treated collars Black Diamond stainless steel i...

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$399.99
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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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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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XR650L XR 650L XR600 XR600R Hotcam Stage 1 Hotcams Cam Timing Chain Bearings Kit

Hot Cams

FITS ALL HONDA XR600R AND XR650L MODELS AND YEARSStage 1 HotcamCam bearingsHotcams timing chainWorks with stock valve springs. Great for stock or m...

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06+ TRX450R TRX 450R Big Bore Gasket Gaskets Seals 100m Head Top Bottom Seal Kit

BPRATV

FITS ALL '06+ HONDA TRX450R AND TRX450ER MODELS~Complete gasket and seal kit100mm MLS head gasketValve stem sealsComplete crankcase oil seal kitWat...

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TRX 400EX Stage 1 Hotcam Hot Cam Chain Guides Black Tensioner Guide Bearings Kit

Honda OEM

FITS ALL XR400R TRX400EX and TRX400X MODELS Hotcams Stage 1 camshaft SKF cam bearings Heavy duty cam chain conversion OEM Honda cam chain guides B...

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04 05 TRX 450R Titanium Exhaust Studs MAXLOCK Ti Pipe Stud 12 Point Nut Kit Pair

BPRATV Talon Titanium

90034-HP1-670, 18291-MEB-670, 90301-HM8-000Get your Honda TRX450R roaring with power again - install this titanium exhaust stud and nut kit for imp...

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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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04 05 TRX450R TRX 450R Big Bore Kit 97mm Cylinder CP 13:1 Piston top End Rebuild

BPRATV

FITS ALL '04-05 TRX450R MODELS 97mm BPR big bore cylinder CP-Carrillo 97mm 13:1 forged piston - race gas piston* Piston rings Wristpin Circlips C...

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04 05 TRX450R TRX 450R Big Bore Stroker Complete Cam Valve Springs Rebuild Kit

BPRATV

FITS ALL '04-05 HONDA TRX450R AND MODELS 97mm BPR big bore cylinder Hotrods +3mm stroker crank with rod 11.5:1 forged custom Wiseco piston (13:1 a...

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13-16 CRF450R CRF 450R Complete Refresh Rebuild Top Bottom End Motor Engine Kit

BPRATV

FITS ALL 2013-2016 HONDA CRF450R MODELS! Aftermarket 96mm stock bore nikasil cylinder CP, JE, Wiseco, or Wossner forged piston Hi temp piston rings...

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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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