Skip to content
BPRATV will be closed on December 24th and 25th in observance of the Christmas holiday. We will have very limited operations from December 27th to December 31st for our annual cycle counts. Thank you for your patience and understanding. Additionally, we will be closed on January 1, 2025, for New Year's Day.
BPRATV will be closed on December 24th and 25th in observance of the Christmas holiday. We will have very limited operations from December 27th to December 31st for our annual cycle counts. Thank you for your patience and understanding. Additionally, we will be closed on January 1, 2025, for New Year's Day.
Honda 400EX 400X 88mm Piston Wiseco Big Bore +3 Over Piston Cometic Gasket Kit

Honda 400EX 400X 88mm Piston Wiseco Big Bore +3 Over Piston Cometic Gasket Kit

by Wiseco
$207.97 - $207.97
$207.97
$207.97 - $207.97
$207.97

Works on all Honda 400EX, 400X, and XR400R models and years

Wiseco 88mm big bore forged piston

Nitrite-coated piston rings

Chrome wrist-pin

Circlips

Cometic big bore top-end gasket kit

MLS head gasket

Runs on pump or race gas

1-year warranty on the complete kit, used and new parts*

BPRATV - The Best Parts. The Best Performance. The Best Price.

BRAPPPPPPPPPP!

TOP SELLERS

Best 400EX valves springs head rebuild near me
Save 13% Save %
$149.99
$149.99 - $149.99
$149.99
$129.99
$129.99 - $129.99
$129.99

400EX 400X Head Redo Valves Intake Exhaust Valve Springs Rocker Arms Rebuild Kit

BPRATV

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS - THE ONLY TRULY COMPLETE REBUILD KIT ONLINE Steel intake and exhaust valves Inner and oute...

View full details
$149.99
$149.99 - $149.99
$149.99
$129.99
$129.99 - $129.99
$129.99
Save 13% Save %
Save 24% Save %
$41.99
$41.99 - $41.99
$41.99
$31.99
$31.99 - $31.99
$31.99

Honda 400EX 400X XR400R Exhaust Studs Titanium Head Pipe Stud Upgrade Kit Set

BPRATV Talon Titanium

FITS ALL HONDA TRX400EX XR400R AND 400X MODELS AND YEARS Studs for all OEM and aftermarket exhaust systems All titanium stud and nut kit Made from ...

View full details
$41.99
$41.99 - $41.99
$41.99
$31.99
$31.99 - $31.99
$31.99
Save 24% Save %
Save 35% Save %
$461.99
$461.99 - $461.99
$461.99
$299.99
$299.99 - $299.99
$299.99

Honda 400EX Top End Rebuild Kit Wiseco 4606M08500 Stock Cylinder Assembly Parts

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
$461.99
$461.99 - $461.99
$461.99
$299.99
$299.99 - $299.99
$299.99
Save 35% Save %
Get best 400EX 88mm big bore hot cam near me
Save 40% Save %
$997.69
$997.69 - $997.69
$997.69
$599.98
$599.98 - $599.98
$599.98

Honda 400EX 400X 88mm +3 Big Bore Kit Stage 2 Cam 426cc Top End Rebuild 2 Hotcam

BPRATV

Works on all Honda 400EX, 400X, and XR400R models and years 88mm heavy-duty big bore cylinder 88mm big bore Wiseco or Wossner forged piston Nitrite...

View full details
$997.69
$997.69 - $997.69
$997.69
$599.98
$599.98 - $599.98
$599.98
Save 40% Save %
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 %
Shop collection

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