搜了下，中文网页似乎还没有介绍此产品的文章。这相当于是个中轴变速，其变速机构原理类似于汽车的变速箱。看上去主要是用于旅行车，从上面的图可以看出也有人用于FR。
The Pinion P1.18 Gearbox offers lightning transitions and is designed for a 60,000km life
The new Pinion gearbox has excelled in all the practice tests, material tests and simulations, operating successfully and ensuring the highest level of quality and reliability. The product has undergone testing to the same high levels applied in the automotive industry, ensuring that a Pinion gearbox now provides a bike for life.
By choosing a new Pinion gear bike, you can be sure that you have chosen a durable product which can be relied upon. At 18 speed and with uniform gear ratios of 11.5%, the Pinion system offers cyclists an improved system to their traditional gears.
A sealed, rugged housing protects the gears from dirt and damage, which means extremely low maintenance. The transmission operates in an oil bath (biodegradable oil) and is designed for a service life of 60,000 km.
The system provides lightning fast switching and optimal mass distribution with a central focus and a lighter rear wheel to improve handling, suspension and vehicle dynamics.
