The cycleops fluid 2 trainer is great to use before and or after an event or race and is also a good training partner in the winter months it features a precision balanced flywheel for inertia and acceleration flexible fluid resistance which achieves ideal power to speed ratio and levelling feet that fits 29ers coming supplied with a power tap hrm and a power tap computer you can really dial in some efficient training sessions in comparison to your fitness cycleops have adjusted fluid levels