C7826, C7825, 12251-KCY-671, 12191-KCY-671, 91302-356-000, 18291-MN5-650, 14523-KBB-901, 91301-200-000, 91306-MG3-000, 91301-679-003, 18291-MN5-650, 91303-397-000, H0401027S, H0401SP2027S, H0402027S, B0244020RC, R88X2B, EX691064AM, EC578020RC, R10X2V, 3231V, R011V, R127V, R132V, R219V, R45.5X2.5V, 12209-KL4-005, 71016-4

HONDA XR400 / 400EX / 400X COMETIC 89MM BIG BORE TOP END GASKET KIT C7826

Fits XR400R / TRX400EX / TRX400X All Years 86mm to 89mm Bore

Seal in unbeatable compression and top-end reliability with this Cometic USA-Made C7826 Gasket Kitperfect for 416cc, 426cc, or 440cc high-performance rebuilds.

Built for extreme conditions and high compression, this kit delivers rock-solid sealing under full throttle abuse, race heat, and aggressive riding.

Kit Includes & Benefits

– Complete Cometic Top End Gasket Kit
– Includes high-performance MLS (Multi-Layer Steel) head gasket
– Works for big bore sizes: 86mm, 87mm, 88mm, 89mm
– Ideal for 416cc, 426cc, 440cc rebuilds
– Perfect for high compression pistons
– Part # C7826 UPC: 191070011307
– Made in the USA

Fitment Guide

Honda (ATV)

TRX400EX Sportrax (1999-2008)

TRX400X (2009, 2012-2014)

Honda (MC)

XR400R (1996-2004)

Why Buy from ?

Weve sold thousands of these kitstrust our experience and expertise to power your rebuild right.

Frequently Asked Questions

Q: Will this fit my 2002 TRX400EX with an 87mm piston?
A: Yes! This kit is made for 8689mm big bore top ends.

Q: Is the head gasket in this kit MLS?
A: Absolutely. This kit includes a Multi-Layer Steel head gasket for superior sealing.

Q: Can I use this with a stroker crank?
A: Yes, it’s compatible with big bore + stroker setups (416440cc).

Q: Is this kit made in the USA?
A: YesCometic is proudly manufactured in the USA.

– The Best Parts. The Best Performance. The Best Price. BRAPPPPPPPPPP!
LLC

C7826, C7825, 12251-KCY-671, 12191-KCY-671, 91302-356-000, 18291-MN5-650, 14523-KBB-901, 91301-200-000, 91306-MG3-000, 91301-679-003, 18291-MN5-650, 91303-397-000, H0401027S, H0401SP2027S, H0402027S, B0244020RC, R88X2B, EX691064AM, EC578020RC, R10X2V, 3231V, R011V, R127V, R132V, R219V, R45.5X2.5V, 12209-KL4-005, 71016-4