Product Details: - Condition: Brand - Quantity: 1x Fuel Mixture Screw - Material: 6061-T6 Aluminum - CNC machined screw for FCR carburetors - Design secures adjustment setting - Numerically calibrated for tuning memory - Includes spring, washer - Anodized finishing Fitment: Fits all FCR & FCR-MX Carburetors, compatible with most common 4-stroke models. Reference fit models: - CRF150R, CRF150R Expert - CRF250R, CRF250X - CRF450R, CRF450X - TRX450R, TRX450R (Electric Start) - KLX450R - KX250F, KX450F - 250 SX-F, 250 XC-F, 250 XCF-W - 400 XC-W - 450 EXC, 450 MXC, 450 SX, 450 SX-F, 450 XC, 450 XC-F, 450 XC-W - 505 SX-F, 505 XC-F - 525 EXC, 525 MXC, 525 SX, 525 XC - 530 EXC - RM-Z250, RM-Z450 - WR250F, WR426F, WR450F - YFZ450 - YZ250F, YZ426F Note: This part may fit other makes and models. Verify compatibility before purchase. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.