Date: 14/04/2013, 08:45Since october'12 a lot of riders that race in the Enduro series are switching from regular air shock to coil over units. The choice ? Elka stage 5 custom valving naturally. The benefits of the custom valving give a big performance increase despite of some grams more. Still sitting there with your air shock ? Let's go to order your new Elka stage 5 custom valving shock unit.