JINGKE Universal Air/Fuel Mixture Screw Adjuster for Keihin FCR Carb – Easy Idle Tuning for Suzuki RMZ, Kawasaki KXF, Honda CRF & More

Overview

The JINGKE Universal Air/Fuel Mixture Screw Adjuster is designed to help riders fine-tune idle behavior on Keihin FCR carburetors. Built for broad compatibility with popular four-stroke motorcycles, this compact adjustment accessory slips into place without the need for modifications, offering tactile control and repeatable results on and off the road.

Compatibility and Easy Setup

Compatible with most Keihin FCR and FCR-MX carburetors, this adjuster suits a wide range of models commonly seen on Suzuki RMZ, Kawasaki KXF/KLX, Honda CRF, Polaris, and Yamaha YZF/WR platforms. The kit includes a spring, washer, and O-ring, making the replacement process straightforward and tool-friendly. No drilling, cutting, or extensive disassembly is required.

Durable Build for Real-World Rides

Crafted from premium aluminum, the screw is designed to resist aging and wear, delivering dependable performance through many miles and varied conditions. The compact 57 × 13 mm size keeps the unit unobtrusive while staying compatible with standard carburetor assemblies.

Easy Tuning with Memory

The numerically calibrated design helps with tuning memory, enabling repeatable idle mixture adjustments. This makes idle calibration a more intuitive, glove-friendly task, turning fine-tuning into a precise, repeatable action rather than a fiddly search for the right setting.

Practical Use Scenarios

• Trail and off-road rides where air and temperature can shift idle response.
• Track days or riding sessions that call for quick, repeatable idle tuning between runs.
• Everyday commuting, where stable idle performance contributes to smooth starts and consistent idle at stops.

Quality Support and Service

JINGKE offers professional parts and free technical support. If you encounter any issues after delivery, you can request a replacement or arrange a return, with guidance geared toward getting you back on the road smoothly.