This genuine KTM engine bottom end crankcase is a perfect fit for your KTM Beta RR EXC SX RFS 400 450 520 525 motorcycle. It is designed to provide excellent performance and reliability for your engine. The part number for this crankcase is 59030000244 and it is made in Austria. This crankcase is compatible with a range of KTM motorcycle models from 2000 to 2007. It is an OE/OEM part and is made to the highest quality standards. With this engine bottom end crankcase, you can be confident that your KTM motorcycle will run smoothly and effectively.