Carbhub TRX300 Carburetor for Honda FourTrax 300 (1988–2000) Complete Tune-Up Kit

Carbhub TRX300 carburetor kit: a direct-fit replacement carburetor plus tune-up accessories for Honda FourTrax 300 (TRX300/TRX300FW) model years 1988–2000.

Keep your Honda FourTrax 300 running reliably with this complete carburetor replacement kit from Carbhub. Built to match OEM fitment and supplied with several service components, this kit replaces multiple original part numbers so you can restore throttle response and simplify maintenance without sourcing dozens of parts separately. The package is intended for riders and mechanics who need a straightforward swap for both 2x4 and 4x4 TRX300 ATVs produced between 1988 and 2000.

Will this carburetor fit my TRX300 or TRX300FW?

Yes — the Carbhub assembly is designed to replace a range of OEM carburetor numbers and fits both 2x4 and 4x4 FourTrax 300 models from 1988 through 2000. Check your original part number against the list below to confirm compatibility before ordering.

• Replaces part numbers: 16100-HM5-671, 16100-HM5-730, 16100-HM5-850, 16100-HM5-L01.
• Also fits: 16100-HC4-013, 16100-HC4-033, 16100-HC4-750, 16100-HC4-840.
• Compatible with TRX300 and TRX300FW model years 1988–2000.

What’s included in the package and why it matters?

The kit contains the carburetor plus a selection of common replacement items so you can complete a basic tune and avoid separate orders. These extras help you get the ATV back on the trail quickly and reduce the chance of follow-up parts shortages.

• 1x carburetor — ready for direct installation with stock mounting points.
• 1x black throttle base cover and 2x screws — replaces worn throttle base hardware.
• 1x air filter, 1x fuel filter, 1x oil filter — common wear items to renew during service.
• 1x spark plug and 1x plunger choke starter valve kit — for starting reliability and choke functionality.

How does installation and tuning work for this replacement?

Installation follows standard carburetor swap steps: remove the old unit, transfer or replace mounting gaskets, fit the new carburetor, and reconnect fuel and throttle linkages. Basic jetting and idle adjustments may be necessary depending on altitude and aftermarket modifications.

• Swap the carburetor using the stock intake manifold and clamps for a secure fit.
• Adjust idle mixture and speed screws per service manual after warm-up.
• Inspect for vacuum or fuel line cracks and replace if needed for reliable operation.

What should I know about updated versions and returns?

The product has been revised to include extra accessories; if you receive an earlier version lacking some items, Carbhub requests you contact the seller so the issue can be resolved. Keep packaging and photos handy for a quick replacement or refund.

• Updated kits include more service parts than older shipments.
• If your shipment is missing items, contact the seller before leaving feedback.
• Include photos and order information to speed up support and resolution.

Who is this for: riders, DIY mechanics, and small repair shops that own or maintain Honda FourTrax 300 TRX300 / TRX300FW ATVs from model years 1988–2000 and want a single-purchase replacement that includes common service parts. It’s best for users who are comfortable performing a standard carb swap and basic tuning; if you prefer a professional install, bring the kit and your vehicle to a qualified technician for correct setup and jetting.