Mikuni Jet Needle - Hsr42 Richer

Mikuni jet needle for HSR42 carburetors with a richer taper profile to lean out the mid-range and full-throttle fuel mixture. Direct replacement for stock Mikuni needles when carburetor tuning adjustments are needed.

Features

• Richer taper profile for HSR42 carbs
• Direct Mikuni replacement needle
• Adjusts mid-range to full-throttle fueling
• 4.4 in length

Specifications

• Brand: Mikuni
• Manufacturer Part #: FJ8-8DDY01-96
• Length: 4.4 in
• Weight: 0.05 lbs
• Country of Origin: Japan

Fitment

Fits Mikuni HSR42 carburetors on V-twin motorcycle engines.

Frequently Asked Questions

What does a richer needle taper do?

A richer profile adds more fuel to the mid-range and full-throttle mixture, useful if your carb is running too lean at cruise or wide-open throttle.

Will this fit other Mikuni carbs?

No — this needle is sized and tapered specifically for HSR42 carburetors. Other Mikuni models require different part numbers.

Do I need to re-jet my carb if I install this needle?

The needle alone adjusts fueling in the mid-range and top-end. Main and pilot jets control low-speed mixture separately.

What's included in the box?

One Mikuni jet needle, ready to install into your HSR42 carburetor.