The R45 Gen.4 Conversion Kit from Chris King Precision Components is a high-quality solution for cyclists looking to customize their hubs and freewheels. This kit includes an axle and bearings specifically designed for Shimano HG systems. With an axle diameter of 130 mm and a 10 mm quick-release axle (QR), it offers easy and efficient installation. The use of stainless steel bearings ensures improved durability and performance, while the total weight of just 0.2 kg guarantees a lightweight design. The product is presented in an elegant black finish, which is not only aesthetically pleasing but also provides a timeless look. Made in the USA, this conversion kit represents the high quality and precision that Chris King is known for. It is an ideal choice for anyone looking to upgrade their bicycle components while enhancing the performance and reliability of their equipment.