RC crawler folks, if you're running a Redcat Racing Gen8 Scout II and need to fix or upgrade your portal axles, this is the exact part you're looking for. This is Redcat Racing's genuine replacement part number RER11364. It's a 17-tooth portal axle output gear, and you get two pieces in the pack. These gears are crucial for transferring power from the driveshaft to the wheels through the portal axles (which give your truck extra ground clearance). Over time or under heavy stress, these gears can wear or strip. Swapping in a fresh set is a common repair/upgrade to keep your Scout II crawling smoothly. Always use genuine Redcat parts for the best fit and performance – aftermarket ones might not mesh perfectly. Before you order, double-check your vehicle manual or your existing parts to make sure this 17T gear is the right one for your specific model and build. Redcat has great US-based customer support if you have questions about fitment (contact info is in the listing). Keep your rig on the rocks with these reliable replacement gears!