105 WH-RS710 C46 Tubeless Position:Pair Pro Penn Marathon is the

Pro Penn Marathon is the official ball of PTR because of its guaranteed longevity

8 and 28 mm are compatible

KICKR's 16lb high-inertia flywheel uses progressive algorithms to better replicate the sensation of riding outdoors on an indoor bike trainer

Wind-protective and water-repellent fabric (DWR finish)

105 WH-RS710 C46 Tubeless Position:Pair Pro Penn Marathon is theShimano has brought full carbon wheels to a new level. With a development concept shared with DURA ACE and ULTEGRA, the new full carbon wheels offer balanced performance at a lower price. The C46, with its focus on a great all rounder model, shares DNA with the C50 DURA ACE and ULTEGRA wheel options. Model No WH RS710 C46 TL F Series SHIMANO Model name WH RS710 Specification C46 TL F