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Due to Thanksgiving and the holiday rush, our current handling time is approximately 4–5 business days. We sincerely appreciate your patience and understanding. We truly appreciate your business and are thankful for another great year serving our customers. If you have any questions or concerns, please contact us—our team is working as hard as possible to ship all orders promptly.
Due to Thanksgiving and the holiday rush, our current handling time is approximately 4–5 business days. We sincerely appreciate your patience and understanding. We truly appreciate your business and are thankful for another great year serving our customers. If you have any questions or concerns, please contact us—our team is working as hard as possible to ship all orders promptly.

99-04 Honda 400EX 87mm Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit

by BPRATV
Save 31% Save 31%
Original price $1,009.99
Original price $1,009.99 - Original price $1,009.99
Original price $1,009.99
Current price $699.98
$699.98 - $699.98
Current price $699.98

WPC131A, 4606M08700, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, 12209-KL4-005, C7825, 808894, 822278, 4040, WPC131A, WPC131B, CBK0016,TBK0012, K014,8604DA

BPRATV Big Bore Rebuild Kit for Honda TRX 400EX – Unlock Power with 416cc Wiseco Performance!


Elevate your Honda TRX 400EX's performance with BPRATV's Wiseco 87mm 416cc Big Bore Engine Rebuild Kit! 

Designed exclusively for models from 1999 to 2004, this comprehensive kit transforms your ride into a powerhouse of efficiency and reliability.

What's Included:

BPRATV's 87mm Big Bore Cylinder: Our durable cylinder comes with a 1-year warranty for peace of mind.

Wiseco Forged Piston Kit: Not only does it boost your engine's performance, but it also includes rings, a wrist pin, and clips—everything you need for a flawless rebuild.

Wiseco Heavy-Duty Bottom End Rebuild Kit: Experience superior durability with a top-tier OEM replacement crankshaft assembly and connecting rod, plus Japanese-made Koyo/NTN main crank bearings.

Complete Gasket Kits (Made by Cometic): Get the best sealing with a Comprehensive Bottom End gasket kit and a Cometic Top End Gasket Kit featuring a Big Bore MLS Head Gasket.

Engine Oil Seal Kit: Cometic made Seals keep your engine tight and operating smoothly.

Viton Valve Stem Seals: Ensure optimal performance and longevity, making these seals perfect for both pump and race gas.

Why Choose BPRATV?

Transform your ATV’s performance with a proven solution that combines quality and reliability. With everything new in original packaging and backed by the manufacturer's warranty, you can confidently upgrade knowing your investment is protected.

Perfect Fit: Specifically designed for 1999-2004 Honda TRX 400EX, our kit ensures a perfect fit and optimal performance.


Ready to unleash the full potential of your Honda TRX 400EX?

Get Your BPRATV's Big Bore Wiseco Complete Motor Engine Rebuild Kit today and feel the difference on your next ride!

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

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