Givi TRK33N Trekker Black Line Case. Case with Monokey fitting system with 33 litre capacity, aluminium finish, with top opening. The new Trekker cases are the best solution for motorbikes with the exhaust pipe on just one side. With two cases sizes, 33 and 46 litres, you can mount the smaller case on the side of the exhaust and the larger one (46 litres) on the other. This way we avoid the asymmetry produced in the bike's volume when installing two cases of the same capacity. The upper window allows rapid access to the case without having to remove it from the bike. This unusual size diversity, together with the ability to use as a central or side case with a Monokey bracket, provides the buyer with the possibility of choosing the best combination to gear up your bike in function of your space requirements.