JT Chain Kit 428HDR 14 50 Reinforced Standard Rear Sprocket Twin Air is known for Twin Air is known for its high quality products and is an OEM supplier for numerous renowned motorbike brands Colour anodised to increase durability which helps to reduce surface wear and lessens the amount of dirt entering the hub which in turn extends the life of the bearing touring or sporty driving – this chain set guarantees you optimal power transmission and a long service life Durability & Reliability: The JT chain set is designed for high mileage