Interbike 2012: Tretta 2WD Assist Bicycle

Here’s an interesting product we saw at Dirt Demo, it’s a 2WD Assist Bicycle. It caught my attention so much that I decided to test ride it.

Can you see the chain drive?


There’s a universal joint on the front drive train that allows it to spin and turn at the same time.

The front gears are direct driven on the left side of the bike.



Here are a few things I found with this idea, mind you this product isn’t currently available in the US. The company states that this particular idea is huge in Japan. Ok so back to the findings; Front drive doesn’t produce enough torque to see a big difference in how it rides. The left chain can easily rub against your thigh, and lastly, it’s heavy. I brought up the issue of changing the gearing on front to make it have more of an impact as well as the chain issue rubbing against the leg. The Rep gladly accepted my concerns and said that they were out at Dirt Demo to gauge interest to see if it’s even worth coming out with this bike here in the US.


  1. Matt

    Kinda interesting concept, but hasn’t this been tried before??

    Maybe if you combined dual-drive with a fat-tire bike it’d be more interesting… a truly go-anywhere bike!

  2. owenfinn

    Did he really say “huge”? 6 years living in Japan and I have never seen a set up like that before.

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