SEA OTTER CLASSIC 2010 – If there were one bike that stole the show, this fully custom Cannondale Flash with trick Shimano Di2 shifting would have to be it.  It’s a fantastical, budget-be-damned example of what can be done when you combine one of the lightest production mountain bikes around with the talents and imagination of a great bike shop and artist Troy Lee Designs.

Picking up a 15.6 lb mountain bike is like a sick joke.  It doesn’t even feel real, and it immediately puts a smile on your face and an itchy, spendy feeling in your wallet.  Some of these tricks you can do on the cheap or as you upgrade other stuff anyway, but some of these ideas are so purpose built that you’d be giving up some measure of all-round performance.

Have they ridden it?  A couple times, but it’s intentionally being kept off the dirt until it’s drawn crowds at a few more shows.  That, and it was only built up shortly before Sea Otter, so it’s fairly new.

Want more?  I thought so….


This bike was custom built by the folks at Newbury Park Bike Shop in California.  They fabricated one-off Di2 remote shifters and integrated the parts into a mix of Cannondale’s Hollowgram SL (42/28) and SRAM XX 10-speed rear cassette.  The result?  A 15.6 pound mountain bike that appears to be every bit as rideable as any other lightweight mountain bike we’ve seen but that feels absolutely ethereal to lift.


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  1. Mounting the electronics under the downtube is a rather obvious mistake for a usable bike which relies on that unit to work the gears.

  2. One thing that makes this bike less rideable at 15.6 pounds is the absence of pedals. They could shave even more weight by taking off the seat or the grips before they weigh it.

  3. The “electronics” under the downtube is the battery pack for the Di2 shifters. Shifting buttons are right next to the hand grips.

    Its standard industry practice for a manufacturer to weigh a bike without pedals.

    Do either of you read this blog much?

  4. that is a real dumb place for the di2 battery. i think di2 is dumb for mountain bikes anyway- too much can break with one crash, especially that batter pack, which will surely get snagged on many east coast log-overs or rocks getting flung up- it needs one of those DH bb bash protectors. regardless, if i had 10 grand id probably like to own one.

  5. Whoa there, Max – I don’t think anyone actually thought they were shifting the bike on the battery pack – just that the downtube not the best spot on a mtb because the bike won’t shift anymore if the battery pack falls off.

    My comment on weighing the bike without pedals is that they’re claiming it’s a rideable weight – I ride my bike with pedals. Maybe you have some other way figured out – I’m proud of you. If they’re giving us the spec weight of what’s included in the spec bike, hey, that’s great, but this doesn’t look like a catalog bike. And yes, I’ve read this blog before – even ridden around the block a few times.

  6. Please add the pedal weight by popular demand. Crank Bros Triple Ti: 167 Grams. We also changed a few things and without pedals the bike is now 15.1 pounds so the previous weight is actually too heavy even with the pedals.

    The battery was never intended to go under the down tube. In fact it is inside the steer tube with all wiring internally routed. Just didn’t have time to run it for Sea Otter.

What do you think?