KM Racing have released a number of new items for their own H-K1 and the Mugen MTX-5. For the H-K1 there is a new set of aluminium ball cups which are stronger and more durable than the originals and wont slip. A set includes 4 pairs of aluminium ball cups and plastic cup inserts. For the MTX-5 there is a carbon brake arm set and carbon radio box plate set, both are lightweight and durable and are made using aluminium mounts. Read more and see some photos of the parts via the source link. Source: http://www.redrc.net/2011/12/km-h-k1-ball-cups-mtx-5-carbon-options