AHL Piston & Piston Rings Pin Clips Kit for Yamaha YP400 Majesty 400 2004-2013 (Oversize +25 83.25mm) Our pistons are modified parts,are slightly different with the original part,but does not affect to use,you just need install it directly High quality material piston set,corrosion-resistant and durable Bore Size:Oversize 83.25mm;100% brand new,ensure the efficient operation of motorcycles Piston kit comes with one piston,one set of rings,one wrist pin,and 2 clips Quality Assurance!If you are not satisfied with our products,we accept all of the return,replacement or refund requests