Tsubaki Sigma Extreme Heavy Duty X-Ring Chain & JT Rubber Cushioned Sprocket Kit. This is a very high quality chain & sprocket kit featuring Tsubaki’s top of the range Sigma X-ring chain combined with high quality JT cushioned steel sprockets that will give exceptional performance, reduced chain noise and increased longevity. What You Get: 1 x Tsubaki Sigma X-ring chain 1 x Tsubaki Sigma rivet type joining link 1 x JT rubber cushioned steel front sprocket (OE size) 1 x JT steel rear sprocket (OE size). Founded in 1917, they have been manufacturing chains for over 100 years and have a solid reputation for producing high quality roller chains. JT Sprockets JT is one of the biggest and most popular aftermarket sprocket brands in the world The front sprocket has a rubber damper cushion which reduces friction between the chain and sprocket; this increases chain life by up to 20% and reduces chain noise by up to 30%. Many motorcycle manufacturers fit cushioned front sprockets as standard for this reason Front sprockets are made from extremely strong SCM420 chromoly steel alloy, and the rear sprockets are made from ultra-durable high carbon C49 steel. The end result is high quality, hard wearing sprockets. We are a well known and long established UK based motorcycle parts supplier with an excellent reputation for delivering high quality motorcycle parts, backed by industry leading customer service. Images The main image in all of our chain & sprocket listings is a generic image. Please refer to the rest of the images in the listing for specific product information.