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Direct installation with OEM components
who are running aggressive camshafts or higher than factory RPMs may find the combination of the O
A: With the 94mm big bore and +5mm stroker crank
Q: Which OEM part numbers does this kit replace
Honda TRX400EX 400EX 87 88mm 89mm Big Bore Cometic MLS Head Gasket 12251-HN1-A41 King Quad 750 Direct installation with OEM componentsCometic MLS head gasket for Honda TRX400EX, TRX400X, XR400R big bore engines. Supports 8789mm bores with race proven sealing. Cometic Honda TRX400EX TRX400X XR400R 87mm89mm Big Bore MLS Head Gasket Product Description The Cometic MLS Cylinder Head Gasket is precision engineered for Honda TRX400EX, TRX400X, and XR400R engines running big bore kits. Built to withstand extreme cylinder pressures, this multi layer steel gasket delivers race proven sealing
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