Skip to content
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!
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

Filters

$
$
Save 32% Save %
$349.99
$349.99 - $349.99
$349.99
$238.88
$238.88 - $238.88
$238.88

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...

View full details
$349.99
$349.99 - $349.99
$349.99
$238.88
$238.88 - $238.88
$238.88
Save 32% Save %
Save 12% Save %
$308.30
$308.30 - $308.30
$308.30
$269.99
$269.99 - $269.99
$269.99

Honda TRX400EX 400EX 400X 87mm 10.8:1 416cc JE Piston Cometic Gaskets Kit Seals

JE Pistons

JE 87mm 10.8:1 416cc Big Bore Piston Kit & Cometic Top End Gasket SetFits Honda TRX400EX, TRX400X, and XR400Years 1999 2000 2001 2002 2003 2004...

View full details
$308.30
$308.30 - $308.30
$308.30
$269.99
$269.99 - $269.99
$269.99
Save 12% Save %
Save 37% Save %
$349.99
$349.99 - $349.99
$349.99
$218.98
$218.98 - $218.98
$218.98

TRX400EX 400EX 400X 89mm 440cc 10.8:1 JE Piston Cometic Gaskets Kit Top End +4mm

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...

View full details
$349.99
$349.99 - $349.99
$349.99
$218.98
$218.98 - $218.98
$218.98
Save 37% Save %
Save 7% Save %
$289.99
$289.99 - $289.99
$289.99
$269.99
$269.99 - $269.99
$269.99

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

JE Pistons

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...

View full details
$289.99
$289.99 - $289.99
$289.99
$269.99
$269.99 - $269.99
$269.99
Save 7% Save %
Save 32% Save %
$436.78
$436.78 - $436.78
$436.78
$298.88
$298.88 - $298.88
$298.88

TRX400EX 400EX 400X XR400R 85mm Stock 10.5 JE Piston Cometic Top End Rebuild Kit

JE Pistons

379165, 1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13...

View full details
$436.78
$436.78 - $436.78
$436.78
$298.88
$298.88 - $298.88
$298.88
Save 32% Save %
Save 32% Save %
$436.78
$436.78 - $436.78
$436.78
$298.88
$298.88 - $298.88
$298.88

TRX400EX 400EX 400X XR400 85mm Stock Bore Cylinder JE Piston Gaskets Rebuild Kit

JE Pistons

379165, 1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13...

View full details
$436.78
$436.78 - $436.78
$436.78
$298.88
$298.88 - $298.88
$298.88
Save 32% Save %
Save 32% Save %
$436.78
$436.78 - $436.78
$436.78
$298.88
$298.88 - $298.88
$298.88

Honda TRX 400X 400EX XR 400R Cylinder Top End Rebuild Kit 10.5 JE Piston Gaskets

JE Pistons

379165, 1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13...

View full details
$436.78
$436.78 - $436.78
$436.78
$298.88
$298.88 - $298.88
$298.88
Save 32% Save %
Save 32% Save %
$436.78
$436.78 - $436.78
$436.78
$298.88
$298.88 - $298.88
$298.88

Honda TRX400EX TRX 400EX Top End Rebuild Kit Cylinder JE Piston Cometic Gaskets

JE Pistons

379165, 1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13...

View full details
$436.78
$436.78 - $436.78
$436.78
$298.88
$298.88 - $298.88
$298.88
Save 32% Save %
Save 44% Save %
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88

TRX400EX 400EX 400X XR400 89mm 89 440cc JE Cometic 10.8:1 Cylinder Big Bore Kit

JE Pistons

247612, 4667M08900, 4794M08900,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY...

View full details
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88
Save 44% Save %
Save 44% Save %
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88

Honda TRX400EX 400EX 400X XR400 89mm 440 JE Cometic 10.8:1 Cylinder Big Bore Kit

JE Pistons

247612, 4667M08900, 4794M08900,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY...

View full details
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88
Save 44% Save %
Save 44% Save %
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88

TRX400EX 400EX 400X 89mm 10.8 440cc JE Piston Cometic Gasket Top End Rebuild Kit

JE Pistons

247612, 4667M08900, 4794M08900,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY...

View full details
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88
Save 44% Save %
Save 44% Save %
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88

Honda TRX 400EX 400X Big Bore Top End Rebuild Kit 89mm Cylinder JE Piston Gasket

JE Pistons

247612, 4667M08900, 4794M08900,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY...

View full details
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88
Save 44% Save %
Save 44% Save %
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88

Honda TRX 400EX Big Bore Top End Rebuild Kit 89mm +4 Cylinder 11:1 JE Piston Kit

JE Pistons

247612, 4667M08900, 4794M08900,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY...

View full details
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88
Save 44% Save %
Save 44% Save %
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88

TRX400EX 400EX 400X 89mm 440cc Big Bore Cylinder JE 11:1 Piston Cometic Top Kit

JE Pistons

247612, 4667M08900, 4794M08900,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY...

View full details
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88
Save 44% Save %
Save 44% Save %
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88

TRX400EX 400EX 400X XR400 89mm 89mil 11:1 440cc JE Cometic Cylinder Big Bore Kit

JE Pistons

247612, 4667M08900, 4794M08900,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY...

View full details
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88
Save 44% Save %
Save 44% Save %
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88

TRX 400EX 400X 89mm Big Bore Cylinder 11:1 JE Piston Cometic Top End Rebuild Kit

JE Pistons

247612, 4667M08900, 4794M08900,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY...

View full details
$581.79
$581.79 - $581.79
$581.79
$324.88
$324.88 - $324.88
$324.88
Save 44% Save %
Save 35% Save %
$339.00
$339.00 - $339.00
$339.00
$218.98
$218.98 - $218.98
$218.98

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...

View full details
$339.00
$339.00 - $339.00
$339.00
$218.98
$218.98 - $218.98
$218.98
Save 35% Save %

Compare products

0 of 3 items selected

Select first item to compare

Select second item to compare

Select third item to compare

Compare