MAD BMW G8x S58 3.5" Fat Boy Downpipes M3 M4 crank hub These polyurethane bushings inserts are

These polyurethane bushings inserts are for the Revshift E9x/E8x motor mounts

The two piece bushing design sandwiches the subframe locking it in place

4-ply silicone couplers as well as stainless steel t-bolt clamps

Finish & Construction

MAD BMW G8x S58 3.5" Fat Boy Downpipes M3 M4 crank hub These polyurethane bushings inserts areOUT OF STOCK May 2nd 2023 The MAD 3. 5" S58 Fat boy is the largest BMW S58 catless downpipe on the market! Upgrade from the stock S58 downpipes to the MAD 3. 5" Fat Boy S58 catless downpipes for maximum airflow, power, and sound! Upgrade to the MAD BMW 3. 5" Fat Boy S58 downpipes to eliminate the backpressure caused by your stock catalytic converters. By upgrading to our downpipes, your turbos can now spool faster and achieve maximum power. As a