New Carburetor For Honda CRF450R 2002-2008 CRF450X 2005-2014 FCR40 FCR 40mm

Carburetor for Honda CRF450R and CRF450X

This 40mm FCR carburetor replaces the stock fuel mixer on Honda CRF450R and CRF450X motorcycles, restoring precise air and fuel delivery for consistent engine response.

Overview

This 40mm FCR carburetor is a direct-fit replacement for Honda CRF450R and CRF450X models, built to meter fuel and air across the full throttle range. It suits riders and mechanics reviving a tired bike or replacing a worn carburetor. The FCR40 carburetor keeps jetting predictable so the engine pulls cleanly from idle to wide-open throttle.

Built For Performance

• 40mm bore sized to match the factory intake on CRF450R and CRF450X engines
• FCR flat slide design for crisp throttle response
• Accelerator pump circuit for strong low-end and mid-range power
• Adjustable idle and air screw for fine tuning
• Durable cast body and metal internal components
• Complete assembly ready for installation and jetting

Fits These Machines

• for Honda CRF450R 2002-2008
• for Honda CRF450X 2005-2014

On-The-Job Use

• Motocross track riding and racing
• Trail riding and off-road recreation
• Carburetor replacement during engine rebuilds
• Restoring a stored or non-running dirt bike

Specs At A Glance

Good To Know

Q: Is jetting required after installing this carburetor? A: Yes, jetting may need adjustment based on altitude, temperature, and exhaust setup to get the best throttle response.

Q: Does this carburetor bolt on without modification? A: It is designed to fit the listed CRF450R and CRF450X models directly, but always verify intake boot and cable routing before installation.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.