The double locking PTRi adjustment runners are recommended for road use in cars without a bulkhead.
These heavy-duty runners allow a very small footprint and have been made to allow the seat to run as low as possible on a flat floor. All Tillett runners are designed to sit in the gap that exists under the seat base, without raising the seat dome in which the driver sits. This is especially useful in vehicles with low roof heights where a roll bar or crash helmet may reduce the available space further.
They have a 31.5cm hole spacing front to back and side to side, matching our bracket types which bend under the seat. They can also be used on the wider based XL, B8 and B9 seats by bending the handle a little.
The PTRi also has a second hole option of 34.5cm, which helps when using other makes of longer brackets.