MWR Has developed new high performance velocity stacks for the new RS 660. Once you install the new MWR velocity stacks in your RS and start getting the right amount of air into your bike, you quickly realize how deficient the OEM velocity stacks are since they were designed without performance in mind. The new Stacks are larger and have a much better bell curve and profile than the OEM which helps increase the velocity and volume of air, helping produce more power over OEM velocity stacks.

Installation is the same as OEM stacks, no modifications needed.