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Feature

For a stable, worry-free ride with any rear wheel-mounted trainer.
Unique 3-level design lets you select the level of difficulty.
Stack two blocks to simulate climbing workouts.
Stackable riser block for rear-mounted cycling trainers
Unique 3-level design lets you select ideal training height
Stacks with 2nd block to simulate climbing workouts
Supports up to 12 adjustment levels with 2nd block
Virtually indestructible injection-molded construction

Description

The CycleOps Riser Block's unique three level design, let's you pick a height for your front tire that will make your trainer riding time more comfortable and productive. You'll train harder and longer, because you'll be riding a more natural position.