Harley Touring FLH/T Motorcycle Derby Cover & Timing Timer Cover - Compatible with 2016-2023 Models | Durable Engine Protection for Harley Davidson Bikes | Perfect for Long Rides & Custom Builds

After reading negative reviews, I was a little skeptical of this purchase. Before installing it, I ensured all the bolts on the derby cover glass were sufficiently tight. I've had zero problems after at least 1000 miles. Very happy with the buy.9/24/20 Update - The best part about this derby cover is that I can monitor the primary fluid without having to take it off. Considering the issue with fluid transfer on the Harley M8s, this is a big plus. Unfortunately, I have to walk back my enthusiasm for this product after I started noticing leaks. I tried taking it off and giving it a thorough cleaning. I also made sure to use Loctite on all the screws, including the little window screws, but after one ride, it's leaking again - although not as badly so far. I did notice that the window gaskets started breaking down. I wonder if that's the weak link causing the leaking. Also, the finish started peeling off on the inside of the cover, but not where it could get into the engine since it's well outside the derby gasket. There is a chance that fluid transfer from the tranny to the primary is factor in all this. Right now I'm trying to figure out next steps.12/30/20 Update - ALL my problems with leaking disappeared once I installed the Harley vent kit (part# 26500027) to solve the fluid transfer problem on my M8 Street Glide. After dealing with leaking primary fluid for sometime, I finally discovered that excess pressure in the primary was what was driving the leaking. I've had no primary fluid leakage with this derby cover since installing the vent kit. Reference HD Service Bulletin M1492 for more information about this issue. Apologies to the seller for assuming the problem was the derby cover.