Skip to content
IMPORTANT NOTICE: Due to the increase in fraudulent orders, the billing and shipping addresses must match when placing your order. We appreciate your patience and understanding.
IMPORTANT NOTICE: Due to the increase in fraudulent orders, the billing and shipping addresses must match when placing your order. We appreciate your patience and understanding.

Honda TRX400X / XR400 / XR400R

Filters

$
$
Save 24% Save %
$461.99
$461.99 - $461.99
$461.99
$349.99
$349.99 - $349.99
$349.99

Honda 400EX 400X XR400 87mm Big Bore Kit +2 Cylinder 416 Top End Rebuild Parts

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARSNEW aftermarket 87mm cylinder87mm forged Wiseco, JE, CP or Wossner Piston*Hi-temp piston ...

View full details
$461.99
$461.99 - $461.99
$461.99
$349.99
$349.99 - $349.99
$349.99
Save 24% Save %
get best honda 400ex 89mm big bore hotcam near me Save 11% Save %
$692.99
$692.99 - $692.99
$692.99
$614.99
$614.99 - $614.99
$614.99

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...

View full details
$692.99
$692.99 - $692.99
$692.99
$614.99
$614.99 - $614.99
$614.99
Save 11% Save %
Get best 400ex cam chain near me Save 30% Save %
$49.99
$49.99 - $49.99
$49.99
$34.99
$34.99 - $34.99
$34.99

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 STRO...

View full details
$49.99
$49.99 - $49.99
$49.99
$34.99
$34.99 - $34.99
$34.99
Save 30% Save %
Get best 400ex 88 big bore kit near me Sold out
$461.99
$461.99 - $461.99
$461.99
$449.99
$449.99 - $449.99
$449.99

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

BPRATV

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...

View full details
$461.99
$461.99 - $461.99
$461.99
$449.99
$449.99 - $449.99
$449.99
Sold out
Save 30% Save %
$49.99
$49.99 - $49.99
$49.99
$34.99
$34.99 - $34.99
$34.99

TRX 400EX 400X Valves Intake Exhaust Sportrax XR400R Aftermarket Valve Seals Kit

BPRATV

TRX400EX SPORTRAX 400 2X4 1999-2008 TRX400X 2X4 2009-2014 XR400R 1996-2004 Intake valve x 2 Exhaust valve x 2 Valve stem seal x 4 St...

View full details
$49.99
$49.99 - $49.99
$49.99
$34.99
$34.99 - $34.99
$34.99
Save 30% Save %
$246.66 - $246.66
$246.66
$246.66 - $246.66
$246.66

TRX400X TRX 400X XR 400R XR400 Stage 2 Two Hotcam Hot Cam Camshaft Timing Chain

BPRATV

Compatible Vehicles Submodel Year Make Model TRX400EX 2x4 2008 Honda Sportrax 400 TRX400EX 2x4 2007 Honda Sport...

View full details
$246.66 - $246.66
$246.66
$246.66 - $246.66
$246.66
Save 36% Save %
$199.98
$199.98 - $199.98
$199.98
$127.99
$127.99 - $127.99
$127.99

400EX XR400R Titanium Cylinder Studs Head Studs Crankcase Cylinder Head Stud Kit

BPRATV

BPRATV - The Original Trailblazer for Titanium Hardware in the ATV Industry.  Fits Honda TRX400EX & XR400X All Years & Models Kit includ...

View full details
$199.98
$199.98 - $199.98
$199.98
$127.99
$127.99 - $127.99
$127.99
Save 36% Save %
Save 15% Save %
$599.99
$599.99 - $599.99
$599.99
$509.99
$509.99 - $509.99
$509.99

Honda XR400R 87m Big Bore Kit Stage 2 Hotcam +2 Cylinder Piston 416c Top End 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...

View full details
$599.99
$599.99 - $599.99
$599.99
$509.99
$509.99 - $509.99
$509.99
Save 15% Save %
Save 0% Save %
$39.99
$39.99 - $39.99
$39.99
$39.98
$39.98 - $39.98
$39.98

Honda 400EX XR400 88mm 426cc Big Bore Wiseco Piston Replacement Rings Set 3465XC

BPRATV

Honda 400EX / 400X / XR400 88mm Wiseco Big Bore Piston Replacement Rings KitPart# 3465XC / XC8800These rings are for Wiseco Piston Part #'s 4606M08...

View full details
$39.99
$39.99 - $39.99
$39.99
$39.98
$39.98 - $39.98
$39.98
Save 0% Save %
Save 29% Save %
$124.99
$124.99 - $124.99
$124.99
$88.88
$88.88 - $88.88
$88.88

TRX 400EX 400X XR400 Ti Cylinder Case Studs 90085-KCY-670 TITANIUM Stud Bolt Kit

BPRATV

BPRATV - The Original Trailblazer for Titanium Hardware in the ATV Industry. FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARSTHESE STUDS ...

View full details
$124.99
$124.99 - $124.99
$124.99
$88.88
$88.88 - $88.88
$88.88
Save 29% Save %
Save 22% Save %
$369.99
$369.99 - $369.99
$369.99
$288.89
$288.89 - $288.89
$288.89

Honda TRX400EX XR 400X Top End Rebuild Repair Kit Wiseco Piston Gaskets Cylinder

BPRATV

Complete Standard Bore Top End Rebuild Kit!Honda TRX400EX & TRX400X Years 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012...

View full details
$369.99
$369.99 - $369.99
$369.99
$288.89
$288.89 - $288.89
$288.89
Save 22% Save %
Save 35% Save %
$500.49
$500.49 - $500.49
$500.49
$323.89
$323.89 - $323.89
$323.89

Honda 400EX 400X XR400 Top End Rebuild Kit CP 10:1 Piston Gaskets Cylinder NGK🔥

BPRATV

Complete 85mm Stock / Standard Bore Top End Rebuild Kit With CP Carrillo Piston and Cometic GasketsThe best rebuild kit on the market should have a...

View full details
$500.49
$500.49 - $500.49
$500.49
$323.89
$323.89 - $323.89
$323.89
Save 35% Save %
$119.99 - $119.99
$119.99
$119.99 - $119.99
$119.99

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

BPRATV

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...

View full details
$119.99 - $119.99
$119.99
$119.99 - $119.99
$119.99
$449.99 - $449.99
$449.99
$449.99 - $449.99
$449.99

TRX 400X XR400R 89mm 440 Big Bore Race Gas Hi Comp 12.5:1 Piston Top End Kit

BPRATV

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS NEW 89mm cylinder 12.5:1 Wiseco or JE forged piston** - race gas only Nitrite coated hi temp...

View full details
$449.99 - $449.99
$449.99
$449.99 - $449.99
$449.99
Save 21% Save %
$139.99
$139.99 - $139.99
$139.99
$110.99
$110.99 - $110.99
$110.99

400EX 400X XR400R Ti Cylinder Head Studs Strongest Heavy Duty Titanium Stud Kit

BPRATV

FITS ALL HONDA TRX400EX XR400R AND 400X MODELS AND YEARS - BUY IN BULK AND SAVE $$$Complete kit for cylinder headAll titanium stud and nut kitMade ...

View full details
$139.99
$139.99 - $139.99
$139.99
$110.99
$110.99 - $110.99
$110.99
Save 21% Save %
Save 41% Save %
$202.39
$202.39 - $202.39
$202.39
$119.99
$119.99 - $119.99
$119.99

Best Honda TRX 400EX 400X XR400 Head Studs TITANIUM Cylinder Head Stud Kit

BPRATV

Compatible Vehicles Submodel Year Make Model TRX400EX 2x4 2008 Honda Sportrax 400 TRX400EX 2x4 2007 Honda Sportrax 400 TRX400EX 2x4 2...

View full details
$202.39
$202.39 - $202.39
$202.39
$119.99
$119.99 - $119.99
$119.99
Save 41% Save %
Save 15% Save %
$472.99
$472.99 - $472.99
$472.99
$399.99
$399.99 - $399.99
$399.99

Best 400EX 400X XR400 87mm Big Bore Cylinder Piston Kit 416 +2mm Top End Rebuild

BPRATV

1043-2, M2008, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$472.99
$472.99 - $472.99
$472.99
$399.99
$399.99 - $399.99
$399.99
Save 15% Save %
Sold out
$521.31
$521.31 - $521.31
$521.31
$349.89
$349.89 - $349.89
$349.89

Honda XR400 XR 400EX 89mm 89 440 Big Bore Top End Rebuild Kit Cylinder Wiseco

BPRATV

4667M08900, 8604D400, 247612, M2033, 1043-2, M2008, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 130...

View full details
$521.31
$521.31 - $521.31
$521.31
$349.89
$349.89 - $349.89
$349.89
Sold out
Save 33% Save %
$521.31
$521.31 - $521.31
$521.31
$349.89
$349.89 - $349.89
$349.89

Honda XR400R XR 400EX 89mm 89 440cc Big Bore Top End Rebuild Kit Cylinder Wiseco

BPRATV

4667M08900, 8604D400, 247612, M2033, 1043-2, M2008, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 130...

View full details
$521.31
$521.31 - $521.31
$521.31
$349.89
$349.89 - $349.89
$349.89
Save 33% Save %
Save 24% Save %
$881.29
$881.29 - $881.29
$881.29
$668.89
$668.89 - $668.89
$668.89

Honda 400EX XR400 85mm CP Carrillo 10:1 Pump Piston Cylinder Stage 2 Hot Cam Kit

BPRATV

1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$881.29
$881.29 - $881.29
$881.29
$668.89
$668.89 - $668.89
$668.89
Save 24% Save %
Save 33% Save %
$834.95
$834.95 - $834.95
$834.95
$558.68
$558.68 - $558.68
$558.68

Honda 400X XR400 XR400R Top End Cylinder 10:1 CP Piston Gaskets Stage 1 Hot Cams

BPRATV

1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$834.95
$834.95 - $834.95
$834.95
$558.68
$558.68 - $558.68
$558.68
Save 33% Save %
Save 24% Save %
$881.29
$881.29 - $881.29
$881.29
$668.89
$668.89 - $668.89
$668.89

Honda 400EX XR400 85mm CP Carrillo Piston Pump Gas Cylinder Stage 2 Hot Cams Kit

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...

View full details
$881.29
$881.29 - $881.29
$881.29
$668.89
$668.89 - $668.89
$668.89
Save 24% Save %
Save 33% Save %
$834.95
$834.95 - $834.95
$834.95
$558.68
$558.68 - $558.68
$558.68

Honda 400X XR400 XR 400R Top End Cylinder Kit CP Piston Gaskets Stage 1 Hot Cams

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...

View full details
$834.95
$834.95 - $834.95
$834.95
$558.68
$558.68 - $558.68
$558.68
Save 33% Save %
Save 22% Save %
$369.99
$369.99 - $369.99
$369.99
$288.89
$288.89 - $288.89
$288.89

Honda XR400 XR400R XR 400 Top End Rebuild Repair Kit 10:1 Wiseco Piston Gaskets

BPRATV

Complete Standard Bore Top End Rebuild Kit!Fits Honda XR400R Years 1996 1997 1998 1999 2000 2001 2002 2003 2004NEW 85mm aftermarket cylinder10:1 Wi...

View full details
$369.99
$369.99 - $369.99
$369.99
$288.89
$288.89 - $288.89
$288.89
Save 22% Save %
Save 35% Save %
$500.49
$500.49 - $500.49
$500.49
$323.89
$323.89 - $323.89
$323.89

Honda 400EX 400X XR400 Top End Rebuild Kit CP 11:1 Piston Gaskets Cylinder NGK🔥

BPRATV

Complete 85mm Stock / Standard Bore Top End Rebuild Kit With CP Carrillo Piston and Cometic GasketsThe best rebuild kit on the market should have a...

View full details
$500.49
$500.49 - $500.49
$500.49
$323.89
$323.89 - $323.89
$323.89
Save 35% Save %
Save 48% Save %
$384.99
$384.99 - $384.99
$384.99
$199.99
$199.99 - $199.99
$199.99

TRX400X TRX 400X Stock Carb Kit Replacement Carburetor Filter Complete Intake

BPRATV

Complete stock replacement carb kit Works on all 400EX and 400X models and years Aftermarket replacement carburetor Throttle cable K&N style c...

View full details
$384.99
$384.99 - $384.99
$384.99
$199.99
$199.99 - $199.99
$199.99
Save 48% Save %
Save 10% Save %
$999.99
$999.99 - $999.99
$999.99
$899.98
$899.98 - $899.98
$899.98

TRX400X TRX400EX Wiseco Complete Rebuilt Motor Engine Rebuild Top Bottom End Kit

BPRATV

FITS ALL '05+ 400EX AND 400X ALL YEARS ALL MODELS NEW stock bore after market cylinder CP JE Wiseco or Wossner forged piston* Hi temp piston rings ...

View full details
$999.99
$999.99 - $999.99
$999.99
$899.98
$899.98 - $899.98
$899.98
Save 10% Save %
Save 33% Save %
$59.99
$59.99 - $59.99
$59.99
$39.99
$39.99 - $39.99
$39.99

Honda 400EX 400X XR400 Complete Titanium Left Crankcase Cover Bolts Screws Kit

BPRATV

BPRATV - The Original Trailblazer for Titanium Hardware in the ATV Industry. Fits Honda TRX 400EX 400X XR400 All Years!Replaces OEM Part #: 90004-G...

View full details
$59.99
$59.99 - $59.99
$59.99
$39.99
$39.99 - $39.99
$39.99
Save 33% Save %
Save 22% Save %
$44.99
$44.99 - $44.99
$44.99
$34.99
$34.99 - $34.99
$34.99

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

BPRATV

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

View full details
$44.99
$44.99 - $44.99
$44.99
$34.99
$34.99 - $34.99
$34.99
Save 22% Save %
Save 24% Save %
$461.99
$461.99 - $461.99
$461.99
$349.99
$349.99 - $349.99
$349.99

400EX 400X XR400 Top End Rebuild Kit Stock Cylinder Piston Upper Assembly Parts

BPRATV

Works on all Honda 400EX 400X and XR400R models and years NEW aftermarket cylinder Forged Wiseco or Wossner piston** Hi temp piston rings Chrome w...

View full details
$461.99
$461.99 - $461.99
$461.99
$349.99
$349.99 - $349.99
$349.99
Save 24% Save %
Save 86% Save %
$769.99
$769.99 - $769.99
$769.99
$110.99
$110.99 - $110.99
$110.99

Honda 96-04 XR400R Ti Cylinder Head Studs Strongest Heavy Duty Titanium Stud Kit

BPRATV

<!–– XIF_BEGIN_COMPATS --> Compatible Vehicles Submodel Year Make Model TRX400EX 2x4 2008 Honda Sportrax 400 TRX400EX 2x4 2007 ...

View full details
$769.99
$769.99 - $769.99
$769.99
$110.99
$110.99 - $110.99
$110.99
Save 86% Save %
Save 13% Save %
$461.99
$461.99 - $461.99
$461.99
$399.99
$399.99 - $399.99
$399.99

TRX 400EX 400X XR400 Stock Bore Cylinder 85mm Rebuilt Top End Rebuild Parts Kit

BPRATV

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW aftermarket 85mm cylinder Forged Wiseco, JE, or CP piston** Hi temp piston rings Ch...

View full details
$461.99
$461.99 - $461.99
$461.99
$399.99
$399.99 - $399.99
$399.99
Save 13% Save %
$145.00 - $145.00
$145.00
$145.00 - $145.00
$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...

View full details
$145.00 - $145.00
$145.00
$145.00 - $145.00
$145.00
Save 13% Save %
$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

BPRATV

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

View full details
$229.99
$229.99 - $229.99
$229.99
$199.98
$199.98 - $199.98
$199.98
Save 13% Save %
$768.74 - $768.74
$768.74
$768.74 - $768.74
$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...

View full details
$768.74 - $768.74
$768.74
$768.74 - $768.74
$768.74
$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...

View full details
$49.99 - $49.99
$49.99
$49.99 - $49.99
$49.99

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare