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Tech – Renthal Twinwall Crossbar
What happened to the crossbar on the Renthal Twinwall bars? It is a question that comes up fairly often. Why do some racers have the bar and others do not? Here is the dope.
The Renthal Twinwall is perhaps the single most popular bar among top racers. Whether it is motocross or enduro, the beefy bar is seen everywhere. It is almost the only bar you will ever see on a factory KTM bike. The Twinwall is considered the toughest bar on the market. That is what makes it popular with race teams. Of course Renthal sponsors many teams, so that has some effect on choices also.
From the company website – “The revolutionary Twinwall® handlebar is an oversized diameter 1 1/8” (28.6mm) handlebar which utilises two tubes, one within the other, borrowing principles from aircraft design to give the best combination of lightness, strength and safety.Since their introduction in 1998, the Twinwall® has been the handlebar of choice for more professional race teams and has helped more riders win championships than any other handlebar in the world.”
It is also the most rigid bar around, not the best for comfort. This is a natural product of making a super tough bar. To compensate for this, many racers remove or cut the crossbar. This adds flex and makes the bar much more pleasing to ride with.
The reason that this modification is not widely known is because in many cases, the crossbar is still in place, a piece has simply been cut from the middle. This allows the stock bar pad to remain in place and the effect is nearly invisible. Without touching the bar, you would never see the modification.
So there you have it. Removing the crossbar is a common practice and intended to make the bar flex better. Next time you are walking around the pits at a major event, take a minute to push on the Twinwall bar pads and see if the same is true.
So would I consider a Twinwall for my own bike? No, probably not. I have ridden plenty of bikes with the bars, even with the crossbar removed, they are too stiff for me. As I don’t bend bars very often (almost never), I can’t see compromising comfort for strength in this situation. Give me the Flexx.