I agree with others who've discussed the benefits of powerful brakes, big rotors, and tall bars for fighting off arm pump. Ditto for hand exercises and changing brake lever position, which are free. Knowledge is another thing that helps with arm pump that can’t be purchased. Good suspension settings, body position, and riding technique can take a rider with stiff arms and horrible claw hands to a rider who's looking far ahead in sections, braking hard and then getting off the brakes, and riding with a relaxed upper body. But you can’t buy that. You can buy coaching, and a...