Processing customization is the purpose of modifying carburetor size 17 19 21 (mm) model PHBG applicable model JOG BWS article number SCL-2018100033-S specifications black 17mm, black 19mm, black 21mm, red 21mm, red 19mm, red 17mm compatible model ZUMU 50 KLX CD70 Applicable models 50CC 70CC 90CC Product Name: Competitive Carburetor CARB PHBG DS Black 17 19 21mm Manual Throttle Valve Installation Model: Motorcycle Universal Caliber: 17 19 21mm Weight: 500g Packing Size: 15*10*10mm Packing Material: Kraft Paper Boxtem Number Diameter Color Outer Diameter to Air Filter Outer Diameter to Intake Main Jet PHBG-17 17mm Black 32mm 25.4mm #70 PHBG-19 19mm Black 32mm 25.4mm #75 PHBG-21 21mm Black 32mm 25.4mm #90 Fitment : Works great for Puch, Motobecane, Sachs, Garelli, Peugot and more (JOG50 JOG90 BWS100 RG50 DIO50-90, for 50CC-100CC motor) 17mm: 19mm: 21mm: 21mm Red: