Belt Drive Conversion Kit for Crossrc EMO XX 1/6 RC Crawler. ? Silent Upgrade, Direct Bolt-On Fit. Transform the drivetrain of your Crossrc EMO XX 1/6 RC Crawler (including the Dinosaur, Stegosaurus and Brontosaurus model variants) with this belt drive conversion kit. It replaces the stock gear drive with a quiet, durable belt system, so all you hear is tire noise on the trail. The kit bolts directly onto the original mounting positions with no cutting or modification required. Small pulley with a 5mm shaft diameter for a precise, secure fit. ? Durable 7075 Aluminum Main Pulley. Built from 7075 aluminum alloy for strength, minimal flex and long-lasting performance. ?? Clear Side Cover. Transparent side guard protects the belt while showing off your upgrade. ? Direct Bolt-On Install. Uses original mounting positions. No modifications needed, simple and easy to install. For Single Motor: includes Small Pulley x1, Large 7075 Aluminum Pulley x1, 10mm Wide Belt x1, Transparent Side Cover/Guard x1. For Double Motors: includes Small Pulley x2, Large 7075 Aluminum Pulley x1, 11mm Wide Belt x1, Transparent Side Cover/Guard x1. Crossrc EMO XX 1/6 RC Crawler. 4.533 (equivalent to 14T pinion). 4.25 (15T equivalent), 4.0 (16T equivalent). 10mm (Single Motor) / 11mm (Double Motor). Direct Bolt-On, No Modification Needed. Q: Will this fit my EMO XX model? A: Yes, this kit is designed specifically for the Crossrc EMO XX 1/6 RC Crawler, including Dinosaur, Stegosaurus and Brontosaurus model variants. Q: Does it require cutting or drilling? A: No, it uses the original mounting positions for a direct bolt-on installation. Q: What is the difference between the two options? A: The Single Motor kit includes one small pulley and a 10mm belt, while the Double Motors kit includes two small pulleys and an 11mm belt, matching your vehicle’s drivetrain setup. Q: Are batteries included? A: No battery is required or included, this is a mechanical drivetrain upgrade part.