Frame Size: Size XL
Product Used: Holy Rail Dual Cage Kit
Link/s: https://www.on-lynecomponents.com/collections/the-holy-rail/products/holy-rail-dual-cage-kit
https://www.on-lynecomponents.com/collections/the-holy-rail/products/triangle-storage-box-1
Bottles: 710ml & 710ml
Notes: Upper bottle could be smaller to avoid shock rub.
Is the rail drilled for downtubes with 3 bosses like the Spark RC? Might as well use 3 if they are there, right?