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 18% Save %
$21.99
$21.99 - $21.99
$21.99
$17.99
$17.99 - $17.99
$17.99

TRX400EX 400EX 400X XR400 Kibblewhite Viton Valve Stem Seals Seal Set of 4 Four

Kibblewhite Precision

Fits Honda 400EX, XR400R, 400X All Years, and many many more vehicles!The best on the market is a complete set of Kibblewhite RED Viton valve stem ...

View full details
$21.99
$21.99 - $21.99
$21.99
$17.99
$17.99 - $17.99
$17.99
Save 18% Save %
Save 31% Save %
$399.99
$399.99 - $399.99
$399.99
$274.99
$274.99 - $274.99
$274.99

TRX 400EX 400X Kibblewhite Valve Springs Guides Complete Valves Head Rebuild Kit

Kibblewhite Precision

330-3120,30-3111,30-3115,30-3117,71016-4, 14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14421-KCY-670 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 144...

View full details
$399.99
$399.99 - $399.99
$399.99
$274.99
$274.99 - $274.99
$274.99
Save 31% Save %
Save 17% Save %
$269.99
$269.99 - $269.99
$269.99
$223.49
$223.49 - $223.49
$223.49

Honda TRX400EX TRX 400EX Kibblewhite Head Intake & Exhaust Valves Seals Springs

Kibblewhite Precision

Best Honda TRX 400EX Kibblewhite Valves Spring Kit On Sale, 30-3111, 30-3116, 30-3118, 71016-4, 71016, 12209-413-003, 14711-KCY-670, 14721-KCY-670,...

View full details
$269.99
$269.99 - $269.99
$269.99
$223.49
$223.49 - $223.49
$223.49
Save 17% Save %
Save 18% Save %
$21.99
$21.99 - $21.99
$21.99
$17.99
$17.99 - $17.99
$17.99

99+ Honda TRX400EX TRX 400EX 400X Head Valve Stem Guide Seals Seal Set of 4 Four

Kibblewhite Precision

Boost Your Honda TRX400EX's Performance With KPMI® Red Viton Valve Stem SealsKey Features/Benefits: Made from 100% Viton for maximum heat resistanc...

View full details
$21.99
$21.99 - $21.99
$21.99
$17.99
$17.99 - $17.99
$17.99
Save 18% Save %
Save 12% Save %
$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

30-3111, 30-3116, 30-3118, 30-3120,30-3111, 30-3116, 30-3118, 30-3120, 14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14421-KCY-670 14431-KCY-670, 144...

View full details
$449.99
$449.99 - $449.99
$449.99
$394.98
$394.98 - $394.98
$394.98
Save 12% Save %
Save 17% Save %
$599.99
$599.99 - $599.99
$599.99
$499.99
$499.99 - $499.99
$499.99

400EX 400X XR400 KIbblewhite Valves Valve Springs Cylinder Head Valve Cover Kit

Kibblewhite Precision

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS!! Aftermarket cylinder head with valve cover Kibblewhite lightweight race valve spring ki...

View full details
$599.99
$599.99 - $599.99
$599.99
$499.99
$499.99 - $499.99
$499.99
Save 17% Save %
Save 14% Save %
$21.99
$21.99 - $21.99
$21.99
$18.99
$18.99 - $18.99
$18.99

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 ...

View full details
$21.99
$21.99 - $21.99
$21.99
$18.99
$18.99 - $18.99
$18.99
Save 14% Save %
Save 40% Save %
$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

Best Honda TRX 400EX Kibblewhite Valves Spring Kit On Sale, 30-3111, 30-3116, 30-3118, 71016-4, 71016, 12209-413-003, 14711-KCY-670, 14721-KCY-670,...

View full details
$374.99
$374.99 - $374.99
$374.99
$223.41
$223.41 - $223.41
$223.41
Save 40% Save %
Save 14% Save %
$97.66
$97.66 - $97.66
$97.66
$84.07
$84.07 - $84.07
$84.07

Honda TRX400EX TRX 400EX ARP Style Stronger Heavy Duty Cylinder Head Studs Kit

Kibblewhite Precision

Brand New Kibblewhite Extreme Heavy Duty Head Stud KitHonda 400EX & 400X Years 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011...

View full details
$97.66
$97.66 - $97.66
$97.66
$84.07
$84.07 - $84.07
$84.07
Save 14% Save %
Save 14% Save %
$97.66
$97.66 - $97.66
$97.66
$84.07
$84.07 - $84.07
$84.07

Kibblewhite Honda TRX 400EX 400X Stronger Heavy Duty Cylinder Head Studs Kit

Kibblewhite Precision

Brand New Kibblewhite Extreme Heavy Duty Head Stud KitHonda 400EX & 400X Years 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011...

View full details
$97.66
$97.66 - $97.66
$97.66
$84.07
$84.07 - $84.07
$84.07
Save 14% Save %
Save 1% Save %
$599.99
$599.99 - $599.99
$599.99
$595.00
$595.00 - $595.00
$595.00

TRX 400EX 400X Stage 2 Hot Cam Kibblewhite Valve Springs Head Rebuild Redo Kit

Kibblewhite Precision

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS - THE ONLY TRULY COMPLETE REBUILD KIT ONLINE Stage 2 Hotcam SKF cam bearings Kibblewhite st...

View full details
$599.99
$599.99 - $599.99
$599.99
$595.00
$595.00 - $595.00
$595.00
Save 1% Save %
Save 10% Save %
$149.99
$149.99 - $149.99
$149.99
$134.89
$134.89 - $134.89
$134.89

400EX 400X XR400 Kibblewhite Valves Valve Seals Black Diamond Intake Exhaust Kit

Kibblewhite Precision

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS!! Kibblewhite Black Diamond kit Stainless steel one-piece valve construction MADE IN USA Std ...

View full details
$149.99
$149.99 - $149.99
$149.99
$134.89
$134.89 - $134.89
$134.89
Save 10% Save %
Save 23% Save %
$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 RED 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...

View full details
$89.99
$89.99 - $89.99
$89.99
$68.98
$68.98 - $68.98
$68.98
Save 23% Save %
Save 34% Save %
$418.22
$418.22 - $418.22
$418.22
$274.99
$274.99 - $274.99
$274.99

TRX400EX TRX 400EX XR400 Kibblewhite Valves Spring Guides Head Rebuild Kit Valve

Kibblewhite Precision

330-3120,30-3111,30-3115,30-3117,71016-4, 14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14421-KCY-670 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 144...

View full details
$418.22
$418.22 - $418.22
$418.22
$274.99
$274.99 - $274.99
$274.99
Save 34% Save %
Save 34% Save %
$418.22
$418.22 - $418.22
$418.22
$274.99
$274.99 - $274.99
$274.99

Honda TRX400EX TRX 400EX Kibblewhite Intake Exhaust Valves Guides Seals Springs

Kibblewhite Precision

330-3120,30-3111,30-3115,30-3117,71016-4, 14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14421-KCY-670 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 144...

View full details
$418.22
$418.22 - $418.22
$418.22
$274.99
$274.99 - $274.99
$274.99
Save 34% Save %
Save 14% Save %
$97.66
$97.66 - $97.66
$97.66
$84.07
$84.07 - $84.07
$84.07

Honda TRX400EX 400X XR400 Kibblewhite Heavy Duty High Temp Head Studs 30-33750

Kibblewhite Precision

30-33750, 90085-KCY-670, 90083-KG0-981Brand New Kibblewhite Extreme Heavy Duty Head Stud Kit Honda® TRX 400X/EX 1999-2014 & XR400R 1996-20004 ...

View full details
$97.66
$97.66 - $97.66
$97.66
$84.07
$84.07 - $84.07
$84.07
Save 14% Save %
Save 20% Save %
$388.50
$388.50 - $388.50
$388.50
$310.80
$310.80 - $310.80
$310.80

99-08 TRX 400EX Kibblewhite Valves Springs Kit Cylinder Head Service Kit Cometic

Kibblewhite Precision

Get the most out of your Honda TRX400EX or  TRX400X with this complete cylinder head service kit from Kibblewhite! This kit has everything you need...

View full details
$388.50
$388.50 - $388.50
$388.50
$310.80
$310.80 - $310.80
$310.80
Save 20% Save %
Save 20% Save %
$388.50
$388.50 - $388.50
$388.50
$310.80
$310.80 - $310.80
$310.80

Honda TRX400EX 400X Kibblewhite Valves Springs Cylinder Head Service Kit Cometic

Kibblewhite Precision

Get the most out of your Honda TRX400EX 400X with this complete cylinder head service kit from Kibblewhite! This kit has everything you need to ref...

View full details
$388.50
$388.50 - $388.50
$388.50
$310.80
$310.80 - $310.80
$310.80
Save 20% Save %
Save 10% Save %
$99.26
$99.26 - $99.26
$99.26
$89.33
$89.33 - $89.33
$89.33

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...

View full details
$99.26
$99.26 - $99.26
$99.26
$89.33
$89.33 - $89.33
$89.33
Save 10% Save %

Compare products

0 of 3 items selected

Select first item to compare

Select second item to compare

Select third item to compare

Compare