Skip to content
OEM & Performance ATV, UTV & Dirt Bike Parts for Yamaha, Honda, Polaris, Can-Am & More — Shipped Fast from BPRATV
OEM & Performance ATV, UTV & Dirt Bike Parts for Yamaha, Honda, Polaris, Can-Am & More — Shipped Fast from BPRATV

Honda TRX400EX

Honda 400EX Rebuild Kits, Pistons, and Parts

Filters

Save 28% Save %
$496.85
$496.85 - $496.85
$496.85
$359.36
$359.36 - $359.36
$359.36

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

Kibblewhite Precision
In stock

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
$496.85
$496.85 - $496.85
$496.85
$359.36
$359.36 - $359.36
$359.36
Save 28% Save %
Save 15% Save %
$1,299.99
$1,299.99 - $1,299.99
$1,299.99
$1,099.99
$1,099.99 - $1,099.99
$1,099.99

05+ TRX 400EX 400X Big Bore 89mm Complete Rebuilt Motor Engine Rebuild Parts Kit

BPRATV
In stock

FITS ALL '05+ HONDA TRX 400EX AND 400X MODELS NEW 89mm after market cylinder CP JE or Wiseco forged hi comp pump gas piston** Hi temp piston rings ...

View full details
$1,299.99
$1,299.99 - $1,299.99
$1,299.99
$1,099.99
$1,099.99 - $1,099.99
$1,099.99
Save 15% Save %
Sold out
$1,684.22
$1,684.22 - $1,684.22
$1,684.22
$999.98
$999.98 - $999.98
$999.98

Honda TRX 400EX Assembled Cylinder Head Stage 2 Hot Cams Chain Big Bore Cometic

BPRATV
Out of stock

14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 14751-KCY-670, 14761-KG0-003 14451-MBV-000, 14781-HA0-770, ...

View full details
$1,684.22
$1,684.22 - $1,684.22
$1,684.22
$999.98
$999.98 - $999.98
$999.98
Sold out
Sold out
$1,702.53
$1,702.53 - $1,702.53
$1,702.53
$999.98
$999.98 - $999.98
$999.98

TRX 400EX 400EX Cylinder Head Stage 2 Hot Cams WISECO Chain Big Bore Cometic Kit

BPRATV
Out of stock

14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 14751-KCY-670, 14761-KG0-003 14451-MBV-000, 14781-HA0-770, ...

View full details
$1,702.53
$1,702.53 - $1,702.53
$1,702.53
$999.98
$999.98 - $999.98
$999.98
Sold out
Sold out
$1,702.53
$1,702.53 - $1,702.53
$1,702.53
$999.98
$999.98 - $999.98
$999.98

Honda TRX400EX Assembled Cylinder Head Stage 2 Hot Cams WISECO Chain Cometic Kit

BPRATV
Out of stock

14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 14751-KCY-670, 14761-KG0-003 14451-MBV-000, 14781-HA0-770, ...

View full details
$1,702.53
$1,702.53 - $1,702.53
$1,702.53
$999.98
$999.98 - $999.98
$999.98
Sold out
Sold out
$1,702.53
$1,702.53 - $1,702.53
$1,702.53
$999.98
$999.98 - $999.98
$999.98

400EX 400X XR400R Cylinder Head Stage 2 Hot Cams WISECO Chain Stock Cometic Kit

BPRATV
Out of stock

14711-KCY-670, 14721-KCY-670 14411-KCY-670, 14431-KCY-670, 14445-KF0-000 14446-KF0-000, 14751-KCY-670, 14761-KG0-003 14451-MBV-000, 14781-HA0-770, ...

View full details
$1,702.53
$1,702.53 - $1,702.53
$1,702.53
$999.98
$999.98 - $999.98
$999.98
Sold out
Sold out
$257.75
$257.75 - $257.75
$257.75
$188.88
$188.88 - $188.88
$188.88

Honda TRX 400EX 400X XR400 Wiseco 86mm 10:1 Piston Kit & Cometic Top End Gasket

Wiseco
Out of stock

4606M08600, C7826,12100-KCY-670, 4606M08500, C7825, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, PK103...

View full details
$257.75
$257.75 - $257.75
$257.75
$188.88
$188.88 - $188.88
$188.88
Sold out
Sold out
$282.75
$282.75 - $282.75
$282.75
$199.98
$199.98 - $199.98
$199.98

Honda TRX 400EX 400X XR400 Wiseco 87mm 10:1 Piston Kit & Cometic Top End Gasket

Wiseco
Out of stock

4606M08700, C7826,12100-KCY-670, 4606M08500, C7825, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, PK103...

View full details
$282.75
$282.75 - $282.75
$282.75
$199.98
$199.98 - $199.98
$199.98
Sold out
Sold out
$282.75
$282.75 - $282.75
$282.75
$199.98
$199.98 - $199.98
$199.98

Honda TRX 400EX 400X XR400 Wiseco 88mm 10:1 Piston Kit & Cometic Top End Gasket

Wiseco
Out of stock

4606M08800, C7826, C3465XC, S520, CW20, C7826,12100-KCY-670, 4606M08500, C7825, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-K...

View full details
$282.75
$282.75 - $282.75
$282.75
$199.98
$199.98 - $199.98
$199.98
Sold out
Save 65% Save %
$1,264.95
$1,264.95 - $1,264.95
$1,264.95
$444.43
$444.43 - $444.43
$444.43

TRX400EX TRX 400EX Stage 1 Hotcam Hot Cam Valves Springs Chain Head Rebuild Kit

BPRATV
Low stock

FITS ALL HONDA TRX400EX TRX400X AND XR400R YEARS AND MODELS   COMPLETE PERFORMANCE HEAD REBUILD KIT! Listing includes: Stage 1 Hotcam Valve spri...

View full details
$1,264.95
$1,264.95 - $1,264.95
$1,264.95
$444.43
$444.43 - $444.43
$444.43
Save 65% Save %
Save 0% Save %
$400.00
$400.00 - $400.00
$400.00
$398.88
$398.88 - $398.88
$398.88

TRX 400EX TRX400EX 400X 87mm 87 416cc Big Bore Cylinder 10:1 Top End Rebuild Kit

BPRATV
In stock

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
$400.00
$400.00 - $400.00
$400.00
$398.88
$398.88 - $398.88
$398.88
Save 0% Save %
Save 10% Save %
$133.78
$133.78 - $133.78
$133.78
$119.89
$119.89 - $119.89
$119.89

99-14 TRX400EX TRX 400EX ProX Pro X Intake Exhaust Valve Kit & KIBBLEWHITE Seals

Pro-X
In stock

28.1495-2, 28.1495-1,14711-KCY-670,14721-KCY-670,12209-KL4-005,30-3115,30-3117,8400003-2, 8400003-1,VES003,VIS003,X2VEK16000,X2VIK16000Is your Hond...

View full details
$133.78
$133.78 - $133.78
$133.78
$119.89
$119.89 - $119.89
$119.89
Save 10% Save %
Save 10% Save %
$133.78
$133.78 - $133.78
$133.78
$119.89
$119.89 - $119.89
$119.89

Honda TRX400EX TRX 400EX ProX Head Fix Intake & Exhaust Valves KPMI Red Seal Kit

Pro-X
In stock

28.1495-2, 28.1495-1,14711-KCY-670,14721-KCY-670,12209-KL4-005,30-3115,30-3117,8400003-2, 8400003-1,VES003,VIS003,X2VEK16000,X2VIK16000Is your Hond...

View full details
$133.78
$133.78 - $133.78
$133.78
$119.89
$119.89 - $119.89
$119.89
Save 10% Save %
Save 14% Save %
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$872.56
$872.56 - $872.56
$872.56

Honda 400EX 400X 87mm 416cc 12.5:1 CP Piston Big Bore Cylinder Stage 2 Hot Cams

BPRATV
In stock

1043-2, M2008, 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
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$872.56
$872.56 - $872.56
$872.56
Save 14% Save %
Save 14% Save %
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$872.56
$872.56 - $872.56
$872.56

BPRATV TRX400EX 400EX 87mm 12.5 CP Piston Big Bore Cylinder Stage 2 Hot Cam Kit

BPRATV
In stock

1043-2,M2008,M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 1311...

View full details
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$872.56
$872.56 - $872.56
$872.56
Save 14% Save %
Save 13% Save %
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$888.88
$888.88 - $888.88
$888.88

85mm Cylinder 10:1 CP Piston Gasket Stage 2 Cam Top Rebuild Kit For Honda 400EX

BPRATV
In stock

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
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$888.88
$888.88 - $888.88
$888.88
Save 13% Save %
Save 6% Save %
$834.95
$834.95 - $834.95
$834.95
$788.88
$788.88 - $788.88
$788.88

99-14 Honda 400EX 400 EX Top End Cylinder Kit 10:1 CP Piston Stage 1 Hotcams Kit

BPRATV
Low stock

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-6...

View full details
$834.95
$834.95 - $834.95
$834.95
$788.88
$788.88 - $788.88
$788.88
Save 6% Save %
Save 13% Save %
$925.35
$925.35 - $925.35
$925.35
$802.33
$802.33 - $802.33
$802.33

Honda 400EX 400X 87mm 416cc CP 11 Pump Gas Big Bore Cylinder Stage 2 Hot Cam Kit

BPRATV
In stock

Honda 400EX 400X 87mm 416cc CP 11 Pump Gas Big Bore Cylinder Stage 2 Hot Cam Kit ...

View full details
$925.35
$925.35 - $925.35
$925.35
$802.33
$802.33 - $802.33
$802.33
Save 13% Save %
Save 7% Save %
$33.34
$33.34 - $33.34
$33.34
$30.88
$30.88 - $30.88
$30.88

Best Honda TRX400EX TRX 400EX Head Gasket Cometic 87 88 89mm Big Bore MLS Gasket

Cometic, Cometic Gasket, Honda TRX 400EX 400X XR400, BPRATV
In stock

Cometic MLS head gasket for Honda TRX400EX, TRX400X, XR400R big bore engines. Supports 87–89mm bores with race-proven sealing. Cometic Honda TRX...

View full details
$33.34
$33.34 - $33.34
$33.34
$30.88
$30.88 - $30.88
$30.88
Save 7% Save %
Save 7% Save %
$33.34
$33.34 - $33.34
$33.34
$30.88
$30.88 - $30.88
$30.88

Cometic Head Gasket 87 88 89mm Big Bore MLS Gasket for Honda TRX400EX 400EX 400X

Cometic, Cometic Gasket, Honda TRX 400EX 400X XR400, BPRATV
In stock

Cometic MLS head gasket for Honda TRX400EX, TRX400X, XR400R big bore engines. Supports 87–89mm bores with race-proven sealing. Cometic Honda TRX...

View full details
$33.34
$33.34 - $33.34
$33.34
$30.88
$30.88 - $30.88
$30.88
Save 7% Save %
Save 7% Save %
$33.34
$33.34 - $33.34
$33.34
$30.88
$30.88 - $30.88
$30.88

99-08 Honda Sportrax TRX400EX 400EX 87/88/89mm Big Bore Cometic MLS Head Gasket

Cometic, Cometic Gasket, Honda TRX 400EX 400X XR400, BPRATV
In stock

Cometic MLS head gasket for Honda TRX400EX, TRX400X, XR400R big bore engines. Supports 87–89mm bores with race-proven sealing. Cometic Honda TRX...

View full details
$33.34
$33.34 - $33.34
$33.34
$30.88
$30.88 - $30.88
$30.88
Save 7% Save %
Save 7% Save %
$33.34
$33.34 - $33.34
$33.34
$30.88
$30.88 - $30.88
$30.88

Honda TRX400EX 400EX 87 88mm 89mm Big Bore Cometic MLS Head Gasket 12191-KCY-672

Cometic, Cometic Gasket, Honda TRX 400EX 400X XR400, BPRATV
In stock

Cometic MLS head gasket for Honda TRX400EX, TRX400X, XR400R big bore engines. Supports 87–89mm bores with race-proven sealing. Cometic Honda TRX...

View full details
$33.34
$33.34 - $33.34
$33.34
$30.88
$30.88 - $30.88
$30.88
Save 7% Save %
Save 10% Save %
$289.98
$289.98 - $289.98
$289.98
$259.98
$259.98 - $259.98
$259.98

Honda TRX 400EX OEM Timing Guide Tensioner with Chain Tensioner WISECO Cam Chain

Honda OEM
In stock

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
$289.98
$289.98 - $289.98
$289.98
$259.98
$259.98 - $259.98
$259.98
Save 10% Save %
Save 10% Save %
$43.10
$43.10 - $43.10
$43.10
$38.79
$38.79 - $38.79
$38.79

Honda TRX 400EX XR 400R Crankshaft Crank Main Bearing Pro X ProX 91001-KF0-018

Pro-X
Low stock

WORKS ON ALL HONDA 99-08 400 EX 12-14 TRX 400X AND 96-04 XR 400R YEAR MAKE MODELSOne Pro-X replacement bearing Part # 23.SCO692C3UPC: 193564317186R...

View full details
$43.10
$43.10 - $43.10
$43.10
$38.79
$38.79 - $38.79
$38.79
Save 10% Save %
Sold out
$281.46
$281.46 - $281.46
$281.46
$219.89
$219.89 - $219.89
$219.89

Honda 400EX 400X Wiseco 88mm BIG BORE 10:1 Piston COMETIC Top End Gasket Kit MLS

Wiseco
Out of stock

Honda TRX 400EX 426cc Wiseco 88mm Big Bore 10:1 Compression Piston & Cometic Top End Gasket KitFits Honda TRX 400EX & 400XYears 1999 2000 2...

View full details
$281.46
$281.46 - $281.46
$281.46
$219.89
$219.89 - $219.89
$219.89
Sold out
Save 30% Save %
$99.99
$99.99 - $99.99
$99.99
$69.99
$69.99 - $69.99
$69.99

Honda TRX400EX TRX 400EX TITANIUM Lug Nut Complete Set Front Rear Kit Set of 16

BPRATV Talon Titanium
In stock

Stand out from the crowd with the Honda TRX400EX TRX 400EX TITANIUM Lug Nut Complete Set Front Rear Kit Set of 16! This bling-tastic titanium lug n...

View full details
$99.99
$99.99 - $99.99
$99.99
$69.99
$69.99 - $69.99
$69.99
Save 30% Save %
$399.99 - $399.99
$399.99
$429.98
$429.98 - $429.98
$429.98

Honda TRX400EX TRX 400EX 400X Stage 1 One Hotcam Hot Cam & Hotcams Timing Chain

Hot Rods
Low stock

Get ready to take your Honda TRX400EX TRX 400EX 400X to the next level with this Stage 1 One Hotcam Hot Cam Hotcams & Hotcams Timing Chain kit!...

View full details
$399.99 - $399.99
$399.99
$429.98
$429.98 - $429.98
$429.98
Save 15% Save %
$99.99
$99.99 - $99.99
$99.99
$84.99
$84.99 - $84.99
$84.99

TRX 400EX 400EX 87mm Big Bore WISECO Piston Rings Set Cometic Top End Gasket Kit

Wiseco
In stock

C7825, XC8500, 3347XC,4606M08500, 4628M08500, 12251-KCY-671, H0401027S, 12191-KCY-671, 91302-356-000, 18291-MN5-650, 14523-KBB-901, 91301-200-000, ...

View full details
$99.99
$99.99 - $99.99
$99.99
$84.99
$84.99 - $84.99
$84.99
Save 15% Save %
Save 18% Save %
$151.99
$151.99 - $151.99
$151.99
$124.98
$124.98 - $124.98
$124.98

Honda TRX400EX TRX 400EX TITANIUM Exhaust Stud Kit & Head Valve Cover Bolt Kit

BPRATV Talon Titanium
In stock

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...

View full details
$151.99
$151.99 - $151.99
$151.99
$124.98
$124.98 - $124.98
$124.98
Save 18% Save %
Save 3% Save %
$999.99
$999.99 - $999.99
$999.99
$974.99
$974.99 - $974.99
$974.99

TRX 400EX 400X 88mm Big Bore Kit Stage 3 Cam Kibblewhite Valves Springs Hotcam

BPRATV
In stock

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW after market 88mm cylinder Wiseco or JE forged piston** Nitrite coated piston rings ...

View full details
$999.99
$999.99 - $999.99
$999.99
$974.99
$974.99 - $974.99
$974.99
Save 3% Save %
Save 10% Save %
$1,000.99
$1,000.99 - $1,000.99
$1,000.99
$899.99
$899.99 - $899.99
$899.99

TRX 400EX TRX 400EX 88mm Big Bore Stage 2 Cam +1 Valves +3 Cylinder Hotcams KPMI

BPRATV
Low stock

FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW after market 88mm cylinder Wiseco or JE forged piston* Nitrite coated piston rings C...

View full details
$1,000.99
$1,000.99 - $1,000.99
$1,000.99
$899.99
$899.99 - $899.99
$899.99
Save 10% Save %
Save 41% Save %
$829.99
$829.99 - $829.99
$829.99
$489.97
$489.97 - $489.97
$489.97

05-14 Honda TRX 400EX 400X Wiseco Crank Rod Rebuild Kit Piston Cometic Gaskets

Wiseco
In stock

Full engine rebuild kit for 2005-2014 Honda TRX400EX/TRX400X including Wiseco crank, rod, 10:1 piston, Cometic gaskets, and NGK spark plug. All new...

View full details
$829.99
$829.99 - $829.99
$829.99
$489.97
$489.97 - $489.97
$489.97
Save 41% 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
Low stock

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 30% Save %
$1,099.99
$1,099.99 - $1,099.99
$1,099.99
$769.99
$769.99 - $769.99
$769.99

99-04 400EX 400 EX 87mm Simple Rebuild Kit Wiseco Piston Complete Gaskets Seals

Hot Rods
In stock

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...

View full details
$1,099.99
$1,099.99 - $1,099.99
$1,099.99
$769.99
$769.99 - $769.99
$769.99
Save 30% Save %
Save 31% Save %
$1,119.99
$1,119.99 - $1,119.99
$1,119.99
$768.99
$768.99 - $768.99
$768.99

05-14 400EX 400 EX BPR Stock Simple Rebuild Kit CP Piston Complete Gaskets Seals

BPRATV
In stock

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...

View full details
$1,119.99
$1,119.99 - $1,119.99
$1,119.99
$768.99
$768.99 - $768.99
$768.99
Save 31% Save %
Save 33% Save %
$1,039.99
$1,039.99 - $1,039.99
$1,039.99
$699.98
$699.98 - $699.98
$699.98

99-04 400EX 400 EX 85mm Simple Rebuild Kit Wossner Piston Complete Gaskets Seals

BPRATV
In stock

Honda TRX 400EX 400X Simple Rebuild Kit (OEM Stock Bore 85mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say ...

View full details
$1,039.99
$1,039.99 - $1,039.99
$1,039.99
$699.98
$699.98 - $699.98
$699.98
Save 33% Save %
Save 33% Save %
$1,039.99
$1,039.99 - $1,039.99
$1,039.99
$699.98
$699.98 - $699.98
$699.98

05-14 400EX 400 EX 85mm Simple Rebuild Kit Wossner Piston Complete Gaskets Seals

BPRATV
In stock

Honda TRX 400EX 400X Simple Rebuild Kit (OEM Stock Bore 85mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say ...

View full details
$1,039.99
$1,039.99 - $1,039.99
$1,039.99
$699.98
$699.98 - $699.98
$699.98
Save 33% Save %
Sold out
$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
Out of stock

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
Sold out
Sold out
$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
Out of stock

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
Sold out
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

Wiseco
In stock

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

View full details
$44.99
$44.99 - $44.99
$44.99
$34.99
$34.99 - $34.99
$34.99
Save 22% Save %
Save 5% Save %
$881.99
$881.99 - $881.99
$881.99
$836.78
$836.78 - $836.78
$836.78

TRX400EX TRX 400EX Stage 3 Hotcam Kibblewhite Valve Spring Complete Head Rebuild

BPRATV
In stock

FITS ALL HONDA TRX400EX TRX400X AND XR400R YEARS AND MODELS   COMPLETE HEAD REBUILD KIT! Stage 3 Hotcam Cam bearings Rocker arms Rocker arm shaft...

View full details
$881.99
$881.99 - $881.99
$881.99
$836.78
$836.78 - $836.78
$836.78
Save 5% Save %
Save 60% Save %
$461.99
$461.99 - $461.99
$461.99
$184.99
$184.99 - $184.99
$184.99

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

Honda OEM
Low stock

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...

View full details
$461.99
$461.99 - $461.99
$461.99
$184.99
$184.99 - $184.99
$184.99
Save 60% Save %
Save 5% Save %
$875.99
$875.99 - $875.99
$875.99
$828.98
$828.98 - $828.98
$828.98

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

BPRATV
In stock

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

View full details
$875.99
$875.99 - $875.99
$875.99
$828.98
$828.98 - $828.98
$828.98
Save 5% Save %
Save 11% Save %
$999.99
$999.99 - $999.99
$999.99
$888.88
$888.88 - $888.88
$888.88

TRX400EX TRX 400EX 88mm Big Bore Stage 2 Cam Kibblewhite Valves 426 Top End Kit

BPRATV
In stock

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
$999.99
$999.99 - $999.99
$999.99
$888.88
$888.88 - $888.88
$888.88
Save 11% 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
In stock

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 %
Sold out
$4,999.99
$4,999.99 - $4,999.99
$4,999.99
$3,199.99
$3,199.99 - $3,199.99
$3,199.99

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

BPRATV
Out of stock

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...

View full details
$4,999.99
$4,999.99 - $4,999.99
$4,999.99
$3,199.99
$3,199.99 - $3,199.99
$3,199.99
Sold out
$649.99 - $649.99
$649.99
$688.88
$688.88 - $688.88
$688.88

TRX 400EX 400X XR 89 mil Big Bore Kit +4 Cylinder Hi Comp Top End Rebuild Hotcam

BPRATV
In stock

FITS ALL HONDA 400EX 400X XR400 MODELS AND YEARS NEW aftermarket 89mm big bore cylinder Wiseco or CP forged piston** The piston is hi comp RAC...

View full details
$649.99 - $649.99
$649.99
$688.88
$688.88 - $688.88
$688.88
Save 1% Save %
$1,154.99
$1,154.99 - $1,154.99
$1,154.99
$1,139.49
$1,139.49 - $1,139.49
$1,139.49

TRX 400EX 400X Assembled Head Assembly Stage 2 Hot Cam Chain Hotcam Camshaft Kit

BPRATV
In stock

FITS ALL XR400R TRX400EX and TRX400X MODELS New aftermarket cylinder head and valve cover Stage 2 Hotcams camshaft HD cam chain conversion SKF cam...

View full details
$1,154.99
$1,154.99 - $1,154.99
$1,154.99
$1,139.49
$1,139.49 - $1,139.49
$1,139.49
Save 1% Save %

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