Namura Hyperdryve Top End Rebuild Kit for 2014 21 Yamaha YFM700 YXM700 models 102.00mm NA 40013K 2007 Yamaha XVS65 V Star 650 Custom no need to buy two no need to buy two kits since each Pivot Works ATV kit includes everything you need for both rear wheels 1999 BMW R1100GS SE 00mm Age Group Gender Position Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Material Color Finish Functional Length Cable Sleeve Length Cable Sleeve Travel Driver Seat Length Passenger Seat Length Driver Seat Width Passenger Seat Width Overall Seat Width Overall Seat Length Piston Cylinder Size 102 Namura gives you a higher performance piston without the higher price