These Tillett TB4 alloy side mount / brackets are 5mm thick and are a 30mm taller version of the TB1 brackets. They are to suit the Tillett B1, B2 and B4 car seats in race and track applications. These allow the seats to be tipped, raised and lowered. TB4 brackets can be used with TR1 seat adjustment runners, however it is not recommended to use adjustment runners on a race or track day car, as they are only intended for road use.Multiple base position holes give a wide range of floor adjustment and fitting optionsSuitable for Tillett B1, B2 and B4 seats car seatsMounting points face inwards under the seat for a minimal footprint, ideal for narrow cockpit cars.Weight: 1.36kgTillett TB4 Fitting Information