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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 400EX 86 87 88 89 mm Big Bore Cometic Top End Gasket Kit C7826 Stem Seals

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Original price $64.99
Original price $64.99 - Original price $64.99
Original price $64.99
Current price $38.89
$38.89 - $38.89
Current price $38.89

🔥 Honda TRX 400EX 86–89mm Big Bore Cometic Top End Gasket Kit C7826 + Seals 🔥

🛠️ Product Overview

Designed for high-performance big bore builds, the Cometic Top End Gasket Kit (C7826) is ideal for 86mm, 87mm, 88mm, and 89mm piston setups such as 416cc, 426cc, and 440cc kits. It includes premium Viton valve stem seals and is made in the USA to the highest standards—perfect for high-compression and stroker builds.

✅ What’s Included

  • Cometic Top End Gasket Kit – Part #C7826
  • Big Bore MLS Head Gasket for 86mm–89mm Builds & Pistons
  • Viton Valve Stem Seals (4) – OE Spec

🚚 Model Fitment

• Honda TRX400EX (1999–2008)
• Honda TRX400X (2009, 2012–2014)
• Honda XR400R (1996–2004)

🔁 OEM Replacement

• Valve Stem Seals replace OEM Part #: 12209-KL4-005

🏆 Why You’ll Love It

  • Perfect for Big Bore Builds: Made to fit 86–89mm bore kits up to 440cc
  • MLS Head Gasket: Multi-layered steel design handles high compression
  • OEM Quality Seals: Viton valve stem seals sourced from top-tier Japanese suppliers
  • USA Made: Built to last and handle performance demands

❓ Frequently Asked Questions

  • Q: Will this fit a 440cc kit? – Yes, fits 416cc, 426cc, and 440cc kits (86–89mm bore).
  • Q: Do I need anything else? – This is a top-end gasket kit; you’ll need a compatible piston and cylinder.
  • Q: Are the valve stem seals high-temp rated? – Yes, made from Viton for heat and wear resistance.
  • Q: What is the head gasket made of? – Multi-layered steel (MLS), ideal for high-compression setups.

🌟 Why Buy from BPRATV?

BPRATV – The Best Parts. The Best Performance. The Best Price.
Brand new, backed by manufacturer warranty and our expert support.
BRAPPPPPPPPPP!


Seal your big bore build right—upgrade to Cometic today! 🏁

© BPRATV LLC

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