Piston Kit: 010-832k_STD 81.00mm Bore. Fits: POLARIS 700. Made to exact OEM specifications. Piston Kits Include: 1 Piston, 1 Ring Set, 1 Wrist Pin, 1pr Circlips. **Prior to placing your order please measure your cylinders to determine the appropriate size required. Most pistons come in .25mm increments from stock or standard bore up to 1mm oversize. Refer to your shop service manual for guidance on the procedure or have the cylinders evaluated by a qualified machine shop**.