Wide Compatibility: Coleman Powersports CT200U CT200U-EX BT200X KT196, Baja Motorsports mini bike MB165 & MB200 (Heat, Mini Baja, Warrior), Hensim mini bike MB165 & MB200 (Heat, Mini Baja, Warrior), MASSIMO MB200, TrailMaster MB200 Superior Material: This eslacated mini bike sprocket is rafted from 7075 aluminum alloy, light weight but durable Feature: Precise tooth design makes the sprocket fit the chain perfectly and avoids the chain from falling off, make your riding safer Efficiency & Riding Experience: In the same condition of front mini bike sprocket unchanged, the smaller 40 tooth rear sprocket can increase speed and save fuel, provide your mini bike more powerful power to conquer all kinds of terrain Note: The diameter of the center hole and the distance between the mounting holes determine whether the 420 chain sprocket is fit for your bike Wide Compatibility: Coleman Powersports CT200U CT200U-EX BT200X KT196, Baja Motorsports Mini Bike MB165 & MB200 (Heat, Mini Baja, Warrior), Hensim Mini Bike MB165 & MB200 (Heat, Mini Baja, Warrior), MASSIMO MB200, TrailMaster MB200, Axis M200