Competition Style T6/12v w/Twin Gates Competition manifold with straight T6 flange and twin 2.5 inch V-band EWG ports. Login to your Dealer account for pricing. SKU: COMPT612TWINWG Category: Cummins Competition Header Related products Competition Style T4/24v w/Twin GatesLogin to your Dealer account for pricing. Competition Style T4/24vLogin to your Dealer account for pricing. Competition Style T6/24v w/Twin GatesLogin to your Dealer account for pricing. Competition Style T4/12VLogin to your Dealer account for pricing.