This item fits most Honda XR/CRF 50/70, SDG, KLX110, and most Chiense made pit bikes. This item will increase HP and airflow for your ride. The carburetor should work with any setups with the 1-7/8 center to center Intake bolts. Specifications: Mikuni 26mm Carb. for Higher performance Precise Throttle response and More consistant jetting! This carb is not a direct replacement for stock CRF50 bike, some modification may be needed Made in Japan!