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.
03-05 YZ450F Cylinder Head +1 Valves Kibblewhite 1mm Stainless Valve Springs Kit

03-05 YZ450F Cylinder Head +1 Valves Kibblewhite 1mm Stainless Valve Springs Kit

by Kibblewhite Precision
Save 7% Save 7%
$1,499.99
$1,499.99 - $1,499.99
$1,499.99
$1,399.99
$1,399.99 - $1,399.99
$1,399.99

DO YOU NEED THIS ITEM ASSEMBLED?  INSTALLED ON YOUR VEHICLE?  GOT QUESTIONS?  CONTACT OUR TECH SUPPORT NOW FOR HELP!

Brand new OEM Yamaha cylinder head with cam journals

Kibblewhite valve spring kit with Titanium retainers

Kibblewhite +1mm White Diamond stainless steel intake and exhaust valves

Kibblewhite Viton valve stem seals

All brand new parts

Compatible with all Yamaha '03-05 YZ450Fand '03-06 WR450F models

1 year warranty*

We are BPRATV, offering the best in parts and service for over 20 years.  Email, call, or visit our Upland, CA location Monday thru Friday.

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 %
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 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 %
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