The AlveyTech 420 Chain 20 Tooth Sprocket is the Version 1 sprocket for the Baja Mini Bike MB165 & MB200 (Baja Heat, Mini Baja, Baja Warrior). This is the larger of the two sprockets in the jack shaft assembly, with 20 teeth and a 0.675" inner diameter.

Compatibility:
Baja Motorsports Mini Bike MB165 & MB200 (Heat, Mini Baja, Warrior)
Coleman CT200U Trail
Hensim Mini Bike MB165 & MB200 (Heat, Mini Baja, Warrior)