Fan mount, 2.45" BCD x6 3/8-16 bolts

This mount can be positioned anywhere along the shaft and the b109 keyless bushing, purchase separately, grips onto the shaft with surprising force. Typically they can transmit over 600 foot pounds. Available in 4 sizes. The six holes are threaded for 3/8-16 fasteners on a 2.45" pattern to match our fans.

1.125" bloc fan mount, 1.0" or 7/8" Bolt pattern to fit our stock lift fan uses B109.

The 1.25” anodized version uses a B106.