Dalton Clutch Kit 09-10 Polaris Sportsman/Scrambler 850 XP 570 GB520MXZ is the strongest Motocross

GB520MXZ is the strongest Motocross chain available for the professional level 125cc to 250cc

Bonus clear lens included

4 self-tapping screws

vacuum-injected U-grease

Supercross and GNCC style riding where more bottom to low end response is desired

Dalton Clutch Kit 09-10 Polaris Sportsman/Scrambler 850 XP 570 GB520MXZ is the strongest MotocrossDalton Clutch Kit 09 10 Polaris Sportsman 850 XP 2009 2010 model years (Not for touring models, or other model years) The original Sportsman 850 XP model. This kit uses optional primary springs for preferred engagement with the original secondary clutch. Sportsman 850 clutch kits can be set up for different terrain and tires sizes elevations. This means accurate clutch tuning for your situation. Improved acceleration as well as better backshifting as