Extra lightweight, reclined and narrow seat. Essentially a version of the B4 without the backframe. Available in carbon/GRP or black GRP.
The B3.5 seat weighs only 2.1kg and has been made to allow fitment into some of the narrowest vehicles around. It holds the driver in a comfortable inclined racing position. The seat is derived from the B4 and features the same interior seating surface without the B4's backframe.
The belt holes have been optimized to enable the use of a Hans device and allow a full racing harness to be used (5 or 6 point harnesses are recommended on an inclined seat).
The seat is supplied with a removable Dinamica ® suede covered headrest pad as standard and can also be supplied with matching back and cushion panels at extra cost.
The B3.5 is a thin flexible shell. To install this seat, it needs support with a framework or from bulkheads and roll bars. The recommended mounting points are shown below and Tillett suggests using their special fittings to attach to your fixing points. At least one fixing point must be at headrest level under the pad and two high up under the arms. Tillett also suggests creating two mounting points on the side at chest level.
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