Outdated Itemset. New version here: https://item.exchange/set/view/12333
This itemset contains RoadIce/Bobsleigh turns with elevation change. It also includes 6x6 turns, which don't exist in any form as vanilla blocks.
The turns have variants for 6 radii: 1x1, 2x2, 3x3, 4x4, 5x5 and 6x6. The number of possible elevation changes correspends to the radius. The 1x1 sized turns have only 1 elevation variant (1 block down/up), while the 6x6 sized turns have 6 elevation variants (up to 6 blocks down up)
Each radius-elevation change combination exists in two variants: down-right and down-left. The down-right turns can also be used as up-left turns, and the down-left turns can also be used as up-right turns.
An flat variant is also included for the 6x6 size, because it does not exist as vanilla block.
How to use: Right click on the folder and extract it into the Documents/Trackmania/Items folder.