How much do they cost you ask?
520 chain pitch $109.95 Custom Sprocket Only
525 chain pitch $114.95 Custom Sprocket Only
530 chain pitch $119.95 Custom Sprocket Only
Make that rear sprocket into a complete kit and we will give you some free stuff! A kit consists of custom rear sprocket, counter shaft sprocket, sealed link chain and you will also get FREE shipping in the USA, a FREE T-shirt and stickers so that you and your bike will be looking good out there. Plus you will get a Life Time Guarantee on the rear sprocket. Check the website www.supersproxusa.com under Products -> Made to measure special sprockets (on demand CNC) or call us for more details on the custom sprockets.