Processing customization is the purpose of modifying carburetor size 34 36 38 40 42 (mm) model PWM34 36 38 40 42mm applicable models general article number 2018040013 specifications PWM 34mm, PWM 36mm, PWM 38MM, PWM 40MM, PWM 42MM advantages of modifying carburetor to increase horsepower Caliber PWM34 36 38 40MM42mm Compatible models ZZR600 KLR650 KLX250 CRF450 KTM Product name: PWM34 36 38 40 42MM carburetor (high quality) PWM Features: Shorter overall length for better top end power. New throttle slide design for im proved main nozzle signal. Easy access to both the main and slow jets through the bowl plug screw. Single control for both idle speed and enricher settings.