CycleOps Climbing Riser Block

Riser Blocks' unique three-level design lets you pick a height for your front tire that is most comfortable for you. Stack two blocks to simulate climbing workouts; two blocks offer a dozen different adjustment levels. Injection-molded riser block is virtually indestructible; solid design stabilizes your front tire to give you confidence for a hard cranking session. Train harder and longer in a more natural position.