I've installed them on several, bothTwin Cam and M8. HD sells them to fit the Twin Cams, but not the M8's yet. They have a cutout to clear the turn signals. But the fastener hole spacing is further apart on the M8 and the lower hole needs to be re-drilled. Install the top of the fang then hold it against the lower fork fastener's head and tap the fang with a soft hammer to mark the hole location. Remove and drill a new hole then install. They may need to be twisted forward to clear the engine bar if it's installed.

 

 

You may have to file the holes in the fangs for a better fit. And the turn signals can be loosened (internal nut inside driving lamps above them holds them on) and moved forward on the bracket bar if more clearance required.

 

 

 

Clearance depends on the shape of the turn signals (flat or bullet) and the crossbar. Pre-2018's they sell two sizes and shapes of fangs...one for Touring and one for Softail. For 2018 the fork head spacing is different (further apart holes required due to new bending valve forks) and that spacing even varies between '18 Softail models. HD might make some that fit when the 2019's come out and they can afford to bring in new accessories. Not much for mid-year parts this year.

 

Just installed mine yesterday. They clear The engine guard fine about 1/4 gap at full lock either direction. They work great. Reduced buffeting big time.

 

 

This applies to the Deluxe models. Two people make it easier but my wife was busy so I did it ok.

The windshield frame to fangs can cause an interference if the shield is installed per the factory instructions (insert into lower mounts and swing the top shield back into the uppers). The two lower "forks" of HD's quick release shield (mine for 2018 is the Heritage style P/N 57400329) that slide over the slotted rubber doughnuts will hit the fang's forward face when the shield is bent forward and can't be pushed back. What I did on 2018 and earlier Deluxes was push the rubber doughnuts fully into the upper and lower forks with no attaching hardware. Then loosen any nuts and bolts used to assemble the windshield's frame. That loose slop allows for the extra width of the fangs that are placed up against the fork frame on the deluxe.

Remove the four short upper factory fork fasteners one at a time (T27 Torx) and partially insert the longer bolts into the forks through the fang's holes (lower one being drilled new to match the spacing). That keeps the metal fork parts in alignment. Remove the lower two bolts and place the lower windshield forks with rubbers over the holes as vertically as possible and insert the bolts with a washer each. Then remove the two upper bolts, swing the shield the small remaining distance into place, and repeat the fastening through the upper rubbers. Align everything and tighten the fork fasteners to spec'd torque per shield instructions. Finally tighten the fasteners that hold the shield to its frame. Rotate the fangs forward edge as required to clear the engine bar (if installed) when the forks are turned left or right.

Removal requires simply unbolting the windshield as it can't be swung forward off the rubber mounts with the fangs installed. If more clearance is desired when installing things unbolt the driving light/turn signal crossbar and temporarily set it on the front fender over pads. Note the steel bolts screw into an aluminum treaded frame under the chrome overlay so be careful at first to not cross thread them.