This is the 13 rib gaiter, which is the correct fork gaiter for the BMW /5 and /6 models. These are the best quality available.
OEM quality.

Fior BMW boxer 2-valve models: R 50/5, R 60/5, R 75/5, R 60/6, R 75/6, R 90/6, R 90S. Price per set.