The Radium Engineering fuel line retaining kit supports up to 2 aftermarket fuel lines under the Nissan R35 GT-R.
The retainers permit hoses to be ran in a channel different than the OEM fuel and brake lines. They are typically installed underneath the RH side of the vehicle, as shown. However, they can also be installed underneath the LH side of the vehicle as well. The 5 included retainers are made from 6061 aluminum and anodized to resist oxidation.