These kits include a chain slider and chain guide both built with the same exceptional quality you find in all of Acerbisa€ products. Both pieces are constructed from Acerbisa€ super durable polyurethane plastic that is shock and friction resistant to give your chain and swingarm outstanding protection. Each piece exceeds the life and protection of OEM parts, but fits your bike like ita€s from the factory. The slider is Acerbisa€ split design that easily slides around the swingarm without removal of the chain or tire, and the guide is an open design that bolts directly up to the stock mounts. These considerations by Acerbis make installing both the slider and guide an incredibly easy task you can complete without removing anything.