The Black Motorcyce is not equipped with a US spec exhaust sytsem. Some export markets (austrailia, italy, new zealand, etc...) do not require catalytic converters. here in the US Triumph has decided to equip the motorcycle with an exhaust system featuring a catalytic converter, Therefore the exhaust systems of the pictured motorcycles are different by design.
I haven't been informed of any mechanical differences between the 2005 & 2006 US spec Speed Triples.( email from Triumph to me) and because of the different exhaust , the system runs at a higher heat , therefore a different sized cooler is required.Hope that helps you.