Regulatory restrictions make it impossible for small-displacement two-stroke models to pass vehicle certification—is KTM planning to launch a large-displacement 350 two-stroke fuel-injected (2T TBI) model to fill the product gap in showrooms?
We’re not sure whether to celebrate or be disappointed, but as KTM, Husqvarna, and GASGAS have only retained one certified two-stroke model (the 300 series) in their 2026 enduro lineups, is a major change coming for the two-stroke enduro model lineup?
Small-displacement two-stroke models have exited the market as certified production models and are now only available for closed-course use. This makes the 300 EXC the sole two-stroke enduro model in the 2026 product lines of KTM, Husqvarna, and GASGAS.
Although many people use the XC-W series models (and obviously, motocross models as well) for racing, a significant number of consumers rarely or never participate in competitive events. Therefore, offering only a single choice (essentially the same aside from color schemes and minor configuration differences) means that sales for this Austrian manufacturer are likely to decline significantly.
Coupled with the complex technology and high costs required for the ongoing development of small-displacement two-stroke models, we can understand why the 300 two-stroke model has become the "lone hero."
Wouldn't it be more logical to invest research and development time, effort, and funds into a larger displacement model—specifically the one people actually want—by increasing the cylinder capacity by 50cc from the 300 series to launch a bigger model?
This is clearly a sensible move.
It should be noted that the above is not official news but merely speculation from Enduro21, once again gathered through multiple inquiries and listening to industry rumors. There is growing evidence that the PDS rear suspension linkage system used in KTM EXC series models (which will be discontinued in the North American market from 2027 onward) and the streamlining of production processes under the guidance of the new majority owner, the Bajaj Group, as KTM addresses last year's financial issues, could at least become another complex problem for the R&D department to solve.
In theory, developing a new model by increasing the cylinder capacity based on the 300 series would be a relatively straightforward R&D step for KTM. Furthermore, 350cc models from other brands have already attracted significant attention, particularly the Beta RX350—despite its use of a carburetor and lack of certification, it has been well-received in the market.
The 250 model is immortal
The Enduro21 team are huge fans of the 250 model. Its power delivery, lighter clutch feel, and agility through the woods with minimal sacrifice in peak performance are all impressive.
We were thrilled when Mario Roman raced the Sherco SE 250 two-stroke at the 2025 Getzenrodeo Hard Enduro World Championship round. Furthermore, the TSP-modified Husqvarna TE250 remains one of the best and most versatile fuel-injected enduro bikes we've ever ridden.
However, this Austrian 250 fuel-injected two-stroke requires aftermarket modifications to be race-ready for enduro events, and for many consumers, the stock model in the showroom feels outdated. Who would still want to buy one?
Moreover, the TPI (Transfer Port Injection) and TBI (Throttle Body Injection) fuel-injected two-stroke models in the 250 and 300 series have been disappointing in competition. Professional riders feel their power delivery lacks the aggressive hit compared to the carbureted models from competitors like Beta, Sherco, and TM.
In contrast, the 300 TBI model has performed exceptionally well in hard enduro events—it was developed to be an "unstoppable" bike capable of navigating extreme rock sections like "Carl's Dinner" at Erzberg. This development has also helped Mani Lettenbichler and Billy Bolt win multiple Hard Enduro World Championships.
It must be said that compared to its competitors, KTM's showroom pricing and parts availability over the past year or so have also negatively impacted the sales of its small-displacement models.
The strong sales of the 300 series further highlight the challenges faced by the KTM Group's smaller displacement models, which is precisely why the 350 EXC could be the solution.