These are replacement crossdrilled discs for our Lightweight 2-Piece Formula Car Brake Rotors, Part Nos. 3540-01 through 3540-06. All of these rotors measure 0.285" thick and have a 6x140mm bolt circle for attachment to a special hat using countersunk 1/4" Allen screws (hat and hardware sold separately). Ferrous construction complies with SCCA Club Racing rules.
Part No. 3541-01 fits Part Nos. 3540-01 and 3540-03 and is generally used with LD19 calipers.
Part No. 3541-02 fits Part Nos. 3540-02 and 3540-04 and is generally used with LD20 calipers.
Part No. 3541-05 fits Part Nos. 3540-05 and 3540-06 and is used with LD20 or 14LF calipers.
All of these discs are are legal for SCCA Formula Ford, Formula Continental, Sports 2000, and Club Formula Ford.
Matching parts available separately: