RC enthusiasts, this one's for you! If you're running a Vertex .16, .18, or SH .18, .21 engine, this Redcat Racing Back Plate (model 11011H12) is a must-have replacement part. It's designed specifically for electric starters, making your engine setup smoother and more reliable. With a 1-inch bolt pattern, it fits perfectly onto compatible engines without any hassle. The dimensions are 0.4\ H x 1.75\ L x 1.2\ W, so it's compact and built to last. Whether you're repairing your RC car or upgrading parts, this back plate ensures everything stays secure and aligned. It's a genuine Redcat Racing part, so you know the quality is spot-on. Keep your engine running strong and avoid starter issues with this simple, effective component. Perfect for hobbyists and racers who want dependable performance. Grab one and get back to the track with confidence!