Trask Assault Derby Cover Repair Kit For Harley If your Assault Derby Cover window is scratched, cracked, or leaking, this Trask repair kit has you covered. Featuring a direct-fit replacement window, durable O-rings, and correct hardware, it makes servicing your Harley quick and hassle-free. Maintain that aggressive custom look while protecting your primary with a proper factory-style repair solution. Features: Repair kit for Trask Assault Derby Covers Kit includes window, O-rings, and hardware Made in the USA