BOLD MAGENTA part numbers are new for 2026 FUEL/AIR SYSTEMS PARTS-UNLIMITED.COM OFFROAD | 2026 FUEL/AIR SYSTEMS 1581 DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 4-6 FOR CATEGORY CODES, IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. PRODUCTS NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IF NOT CATEGORIZED AS “1” OR “4”. COLOR PART # Black 1050-0213 COLOR PART # Blue 1050-0215 COLOR PART # Green 1050-0214 COLOR PART # Orange 1050-0211 COLOR PART # Red 1050-0177 FUEL MIXTURE SCREWS BY ZIP-TY •The inventor of the easy-adjust fuel screw and Moose Racing brings you this needed accessory •7075-T7 aluminum construction and re-designed pin taper set this screw apart from the competition •Adjust your carb for better off-idle acceleration with just your fingers • Includes O-ring, washer, and heavy-duty spring •Fits all new-style Keihin FCR carbs • Anodized in red, orange, black, blue and green •Made in the U.S.A. COLOR PART # Blue 1050-0452 COLOR PART # Black 1050-0455 COLOR PART # Red 1050-0453 FUEL MIXTURE SCREWS FOR KEIHIN FCR CARBURETORS •Fits most common 4-stroke models FITS MODEL PART # HONDA CRF250R 04-09 1050-0173 CRF250X 04-12 1050-0173 CRF450R 02-08 1050-0173 KAWASAKI KX250F 04-10 1050-0173 FITS MODEL PART # KTM 450/525 4-strokes w/ FCR carb 03-10 1050-0173 SUZUKI RM-Z250 04-10 1050-0173 FITS MODEL PART # YAMAHA WR/YZ250F 01-13 1050-0173 WR/YZ426F 00-02 1050-0173 WR/YZ450F 03-09 1050-0173 FUEL MIXTURE SCREW •The under-the-float-bowl location of the fuel screw makes it next to impossible to reach •Pro Circuit’s fuel mixture screw can be turned by hand (without the use of tools) •Fits 4-strokes with Keihin pumper carburetors (FCR) •Includes O-ring (spring not included) FITS MODEL PART # HONDA CRF150R 07-24 1050-0275 CRF250R 04-09, CRF250X 04-17 1050-0275 CRF450R 02-08 1050-0275 CRF450X 05-17 1050-0275 FITS MODEL PART # KAWASAKI KX250F 04-10 1050-0275 KLX450R 08-09 1050-0275 KX450F 06-08 1050-0275 KTM 250 SX-F 05-10 1050-0275 250 XCF-W 05-11 1050-0275 FITS MODEL PART # KTM (CONT) 400/450/505/525/530 SX/SX-F/MXC/XC/XCF-W 03-11 1050-0275 450 SX-F 12 1050-0275 SUZUKI RM-Z250 04-09 1050-0275 RM-Z450 05-07 1050-0275 FITS MODEL PART # YAMAHA WR250F 01-14 1050-0275 YZ250F 01-13 1050-0275 WR426 01-02 1050-0275 YZ426 00-02 1050-0275 WR450F 03-11 1050-0275 YZ450F 03-09 1050-0275 FCR CARBURETOR FUEL MIXTURE SCREW ASSEMBLY • Allows “no tools” tuning to obtain crisp, clean, positive off-idle throttle response • Includes sealing O-ring, tension spring and washer •CNC machined from durable 7075-T7 billet aluminum • ”EZ Dial” knob with laser-etched numerals •O-ring design helps resist engine vibration and increase accuracy and longevity •Black finish Green Black Red Blue Orange 1050-0452 1050-0455 1050-0453
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