The closest you can get to seeing the USMLE Step 2 CK without actually taking it Neurology: PreTest Self-Assessment & Review is the perfect way to assess your knowledge of neurology for the USMLE Step 2 CK and shelf exams. You'll find 500 USMLE-style questions and answers that address the clerkship's core competencies along with detailed explanations of both correct and incorrect answers. All questions have been reviewed by students who recently passed the boards and completed their clerkship to ensure they match the style and difficulty level of the exam.
question stems are shorter than uworld, but the book in general is quite informative and covers plenty of rare diseases probably not mentioned elsewhere (I still wonder whether these diseases are tested, but it's interesting anyway).
Might be a little less difficult than it should be, considering the real test questions tend to be harder. The answer explanations are pretty good though.