Many say this engine design is antiquated or "dead end". It is not the most complex engine by far on the market but I know of many guys personally that have hung six figure mileage on their big twins with proper maintenance. I have witnessed burn out competitions (a dumb practice in my opinion) where guys banged off their rev limiters for literally minutes on end until the back tire shredded and never seen a engine blow first, tho I am sure it has happened. Are they too expensive? YUP. Does HD cut corners on important bearings etc? YUP...Stupidly and at their own peril. However at its core if maintained somewhat respectfully this motor and tranny are good equipment, not Honda good, but I dare say Triumph good, Moto Guzzi good etc and way better than some ( Ural, Royal Enfield etc.) When I had Corvettes for years the argument was that the Chevy 2 valve V8 was a relic that would not continue to be competitive against the complex motors from competitors. However at a WAY lower price it is competitive with cars costing many times more and soundly whips many. Check out track times on the latest ZR1. I love the conversation, love the passion of motorheads. Love my new TR3t, wish they would finish getting it tuned because it is riding weather and I want to ride the big girl...