Welcome to the AENBUSLM storeAll of our products are produced in our own factory. The quality of the product is very good.Please buy with confidence. We will arrange delivery on time.Description nThis product has a standard size, +0.25 mm, +0.5 mm and +0.75 mm in four sizes. Characteristics:Manufactured with the latest technologies and computerized ones derived from GP and F1. TheForged pistons are more resistant to temperature and last longer than cast pistons.These pistons also have a piston skirt coating.The piston sets are supplied complete with rings, bolts and clips.Hermetic function, prevents gas leakage from the top of the piston.This piston ring also achieves the dissipation effect on theheat. Prevent excessive oil from entering the combustion chamber and thoroughly lubricate the cylinder wall.Maintain the direction of the piston's movement as you select the best piston ring for the motor.This kit includes a piston, rings, wrist pin and safety rings.Installation by a professional is strongly recommended. No installation instructions are included.SPECS: Condition: 100% brand new aftermarketMaterial: Aluminum SizeHole size: 73.50 mm (+0.50 mm)Height: approximately 47.5 mm/1.87 inchesAttention: modified piston, check the size or height of the hole that fits the motorcycle or not before buying.PART NUMBERS:4GY-11636-00 4GY-11605-004GY-11605-00:ADJUSTMENT:fits Yamaha TT250R RAID 1994-1996Fits Yamaha TT250R TT-R 1993/1995-2004Fits Yamaha TTR250 TT-R 250 1999-2006(The compatibility chart is for reference only!)(Please compare with the defective unit and the picture we provide to decide the fit)Package Includes:1 ring kit for track pins nNOTE:check the P/N and the height that fits your motorcycle or not before purchasing.73.5 mm piston ring kit for Yamaha TT250r Ttr250Links and descriptions with (AENBUSLM) this brand may not be sold without permission from (AENBUSLM).Violations are not prosecuted for intellectual property infringement.