RFX Pro Series Elite Rear Sprocket Husqvarna 125 610 Up To 2013 Gas Gas EC125 300 All Years Various Sizes Teeth:53 Pivot Works Swing Arm Bearing BPF TIP OEM 16 ORA Pivot Works Swing Arm Bearing Kit KTM SX125 SX150 04 15 SX25012 16 SX F450 07 12 SX F250 11 15 Model Year Pitch Part Number Std Size KX 125 98 99 520 FXRS 20 48 KX 125 92 95 520 FXRS 20 49 KX 125 00 02 520 FXRS 20 49 KX 125 96 97 520 FXRS 20 50 KX 125 03 08 520 FXRS 20 51 KX 250 87 89 520 FXRS 20 47 KX 250 90 91 520 FXRS 20 48 KX 250 92 98 520 FXRS 20 49 KX 250 99 01 520 FXRS 20 49 KX 250 02 05 520 FXRS 20 49 KX 250 02 08 520 FXRS 20 51 KX 500 87 04 520 FXRS 20 47 KXF 250 04 05 520 FXRS 20 48 KXF 250 06 10 520 FXRS 20 48 KXF 250 11 20 520 FXRS 20 50 KXF 450 06 20 520 FXRS 20 50 KDX 200 89 06 520 FXRS 20 47 KDX 200 84 88 520 FXRS 20 48 KDX 220 97 05 520 FXRS 20 47 KDX 250 91 94 520 FXRS 20 48 KLX 250 94 98 520 FXRS 20 50 KLX 450 08 14 520 FXRS 20 50 RFX Pro Series Elite Rear Sprocket Husqvarna 125 610 Up To 2013 Gas Gas EC125 300 All Years (Red) Various Sizes RFX Pro Series Rear Sprockets are CNC Machined from 7075 aerospace aluminium and feature mud clearing grooves for a longer chain and sprocket life