KTM 450 SX

Businessman Ernst Kronreif became a major shareholder of the company, which was renamed and registered as Kronreif & Trunkenpolz Mattighofen.

The R125 Tourist was introduced, followed by the Grand Tourist and the scooter Mirabell

. The company secured its first racing title in the 1954 Austrian 125cc national championship.

KTM made its appearance at the International Six Days Trials, where Egon Dornauer won a gold medal on a KTM machine.

KTM built its first sports motorcycle, the Trophy 125cc. KTM's first moped, named Mecky, was launched Followed by Ponny I

. Two years later

Hans Trunkenpolz also died of a heart attack. His son, Erich Trunkenpolz, took charge of the company's management.

. The 1960s also saw the beginning of bicycle production in Mattighofen.

Through an American importer, John Penton under the Penton brand. This joint venture lasted until KTM established KTM America Inc. in Ohio

And forty years after it was founded, KTM was offering 42 different models. Additionally, KTM was able to produce motorcycles for the racing industry and began producing motorcycles for John Penton.

KTM-Sportmotocycle began a partnership with ATV manufacturer Polaris Industries with the goal of shared research, and more importantly shared distribution networks. This partnership was a two-year trial arrangement, at the end of which both parties had the option of merging the two companies into on…

KTM announced that the partnership with Polaris had been downgraded, and would instead only supply their 450cc and 510cc RFS engines to Polaris. In January 2008, Bajaj announced that it would jointly develop two new 125cc and 200cc bikes for Europe and the Far East.

To focus on stock 690 SMC R machines.

The 690 SMC R model was completely renewed. The bike now has the latest version of the single cylinder LC4 power unit, introduced for the MY2016 Duke.