This is a 2019+ rear diff as found in Renegades 570 and larger and Outlander 650 and larger. It has a 6″ (155mm) straight cut ring gear as shown. It will fit g2 bikes (500/570/650/800/850/1000) if you are upgrading you will need to shorten the shaft 1.75″ or purchase a kit from us, please see our other listings. (G1 bikes will require additional modifications to work). It has provision for an abs sensor but will fit bikes without a rear diff sensor. BRP claims a 25% increase in load capacity with this gear kit over the xmr helical cut final drives (rear diffs) from 13-18 models. Number of gear splines 20 Current part number 705502808