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Honda CB Tappet Adjuster Screw & Nut Set ~ Replaces 90012-426-000

$4.61 USD
49-0784
Replace your tappet adjuster screws and nuts with this Tappet Adjuster Screw & Nut Set. Each set includes one tappet adjuster screw and one...

Piston Kit with Piston Rings and Pin ~ Standard Size (07-0187)

$69.95 USD
07-0187
Upgrade or rebuild your classic Honda motorcycle engine with this Standard Size Piston Kit — complete with piston, piston rings, and piston pin. This...

1978 Honda CB400TI Hawk I · Piston Kits Buying guide

Measure first, then choose the piston kit

The available kit is standard size and covers one piston. Confirm the existing bore condition and any previous machining before deciding whether this option belongs in your engine rebuild.

Standard size is a measurement decision

A model-year match cannot tell you whether an older cylinder has already been bored. Have the cylinder and piston clearances assessed against the service specifications before ordering. If machining calls for an oversize piston, the standard-size kit shown here is not that choice.

Keep package quantity separate from engine quantity

Each kit contains one piston, its rings, a pin and clips. Build the order around the number of pistons being renewed. Ring and pin references are 13011-413-025 and 13111-413-000; use them to check the kit’s scope, not to bypass cylinder measurement.

Common buying questions

Will one kit replace both Hawk I pistons?

No. One kit covers one piston with rings, pin and clips. Replacing both pistons requires two suitable kits, after the cylinder measurements confirm that standard size is appropriate.

Should I order standard size for an untouched-looking engine?

Appearance is not enough to establish bore size or wear. Previous machining may not be obvious, so have the cylinders measured before deciding that a standard-size kit is suitable.

Are the rings and piston pin supplied with the piston?

Yes. This kit includes the piston, rings, pin and clips for one piston position. It is useful when those parts are being renewed together, rather than buying a bare piston.

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