CPP-US is an International Komatsu dealer of Certified Premium quality Komatsu Parts like these Komatsu Back-Up Rings. With over 100 years combined industry experience with Komatsu equipment and Komatsu parts, we bring you only the very best aftermarket Komatsu Back-Up Rings available. The vast majority of our parts are sourced from Italy, USA, and Japan. All of our Komatsu Replacement Back-Up Rings come from well established manufacturers with most of which are OEM Manufacturers. Buy your Komatsu Back-Up Rings and save as much as 50% without compromising quality.