アゴスチーニの1966年〜1972年の500ccクラス7連勝という大記録を支えたの名車中の名車ですが、有名な割には、資料が少ないので困ります。この3気筒に限らず、当時のアグスタは、かなりの秘密主義を貫いていたらしく、当時の写真などは、非常に少ないのです。この時代は、アゴスチーニ＋アグスタの圧倒的強さもあって、なんだか面白く無かったように思われますが、リザルトを、アゴスチーニ抜きで見ると、ノートン、マチレス、シーリー、リックマン、パトン、リント、アエルマッキ,CZ…等様々な興味深いマシン達が、争っていて、なかなか面白いものです。
圧倒的強さとはいっても、最初の２年は、ホンダ4気筒と競り合ってのチャンピオンですから価値があります。アグスタもそれまでは、4気筒で戦っていましたが、パワフルなホンダの登場に、4気筒を改良して対抗するのでは無く、3気筒を開発して立ち向かったところが、何だか美しいですね。ホンダが後に登場するNSと、考えが似ているような。
3気筒になったのは、アゴスチーニが小柄であったため、小型、軽量なマシンを開発しようということだったのですが、開発現場では、4気筒ベースでと思っていたようです。ところが、総帥のアグスタ伯が、かつてのDKW3気筒の速さに惚れ込んでいて、「3気筒を作れ〜」という命令がくだり、技術陣が、あれは2ストロークだから同じようなことにならないと説得したけど聞き入れられず、２ストでいいんなら4ストでもいいはずだ〜と怒鳴られて、渋々2バルブの3気筒を作ったのですが、何で今どき２バルブなんだー！と、２度叱られて出来上がったそうです。3気筒というと、中途半端な気筒数で、マイナーな感じですが、意外と名車と呼ばれるマシンが、２ストローク、４ストローク問わず多いんですよ。前述のNSや、DKW、トライアンフトライデント＆BSAロケット３、カワサキH１、H２等、片山がチャンピオンを獲得したのもTZ改造の3気筒でした。名車と呼べるかは、別として、最近では、モデナス（プロトン）や、アプリリアなんかがありますね。
あと、3気筒は、音が独特で、残念ながら、アグスタ3気筒の音は聞いたことは無いんですが、さぞ良い音がしていたでしょう、ホンダと争っていた頃を想像すると、リアルタイムで、見られた人が、非常にうらやましい。
軽量、コンパクトで３気筒というと、低速からトルクが厚く、乗りやすい（レーサーにしては）のだろうと想像しましたが、アゴスチーニの後のインタビューで、非常にピーキーで、低速トルクが無く、乗りにくいものだったと言っていました。

Although it is a noted vehicle supporting-large record called seven successive victories in 1966- 1972 of Agostini at 500 cc class name in the train, since there are few data, comparatively famous , it is troubled. There are very few photographs of those days spread if not only 3 cylinders but this MV Agsuta of those days has pierced through remarkable secretiveness. Although it also has the overwhelming strength of Agostini + Agusta and is considered for there to have been nothing pleasantly somehow, when this time is seen without Agostini, various interesting machines and others, such as Norton, Matchless, Seeley, Rickman, Paton, Lint, and Aermacchi,CZ --, have fought for it, and it is very much interesting. [ of machines ] Although it is overwhelming strength, since two years of the beginning are the champion who competes with 4 cylinders of Honda, they are worthy. Is the place of MV Agsuta which there is not in improving 4 cylinders to the powerful appearance of HONDA, and opposing it, developed 3 cylinders, and fought till then although fought by 4 cylinders beautiful somehow? The idea resembles NS in which Honda appears behind.
It seems that it was thought in the development spot that 4 cylinders would be used as a base although it was developing a small and lightweight machine, since having become 3 cylinders had Agostini short in stature. However, although a Chief Domenico Agusta is charmed by the once speed of 3 cylinder of DKW, the command "make 3 cylinders" went down and group of technical experts persuaded "They do not become the same thing since thats are two strokes" It is said that it was scolded again, saying, "It is two valve in what nowadays", and was done although it did not comply, but it roared out, saying "2 Four strokes must be sufficient at a stroke" and 3 cylinders of two valves were reluctantly made if good. If it is called 3 cylinders, although it is minor touch in the halfway number of cylinders, no less than four strokes have many machines called noted vehicle as it is unexpected to no less than two strokes. It was also 3 cylinders of TZ reconstruction that the above-mentioned NS, DKW, the Triumph Trident &BSA Rocket 3 , Kawasaki H1, H2 grade, and Katayama gained the champion. Does whether it can be called a noted vehicle have Modenas (proton)KR3 and Aprilia something recently as another? the back, though 3 cylinders was peculiar and sorry about sound, although the sound of 3 cylinder of Agusta had not been heard, probably, there was surely good sound -- when the time of having fought with Honda is imagined, the person who is real time and was seen is very enviable When it was lightweight and compact and was called 3 cylinders, from the low speed, it was thick, and at the interview after Agostini, very much, by the peaky, there is no low-speed torque and torque had said that it was the thing which will be easy to ride and which cannot ride easily, although imagined.