These modified Toyota fuel rails are to help overcome the restrictive side-feed design of the Rev 1 + 2 Mr2
and Celica St185.
The're cross drilled to enlarge there bore to 8mm which makes them perfect when doing a 540cc
(gen 3+ / ST205) management upgrade.
For even larger injectors its recommended to use a full top-feed rail system to counter the pressure drop issue associated with the side-feed design when using larger than standard injectors
Sold as an exchange