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Product Description


Time’s Izon Aktiv frameset takes an already smooth-riding endurance bike and makes it even smoother. They think of it as an aggressive Gran Fondo steed that thanks to its Aktiv fork, turns nearly any road into a smooth ribbon of blacktop.

The Aktiv fork is designed with a tuned mass damper inside. It’s a small weight on a flexible rod moving inside the fork. You won’t hear it moving as there are rubber bumpers to damp any sound. It adds 200g to the bike. But what it takes away is vibration. Time found that 75% of the vibration experienced by the rider comes from the fork. When tuned mass dampers are used in cars, they help stabilize the front end. So not only are lots of vibrations never making it past the dampers, but stability has improved. This not only smoothes out the road, but increases confidence, decreases fatigue, for an overall performance improvement. And it does so without changing the geometry.

The Aktiv model also comes with an extended seat mast. In some bikes, this increases the feeling of stiffness. In Time, it decreases that sensation. That’s because Time deploys vibration-damping Vectran fibers woven all the way to the top of the mast. The mast is topped with a clamp that allow for 3cm of vertical adjustment. It’s also 30g lighter than the standard seat post. If you don’t want the mast, it can be removed, and the clamp used to secure a Time seat post; a change we can do.

The frame itself is otherwise the same Izon. Time starts with the geometry. They design their bikes with Grand Tour distances in mind, something everyone can get on and pedal all day every day and still feel ready to ride the drops.

Not only does the geometry serve this purpose but the tubeset as well. Time weaves their own carbon-fiber tubes, forms them around wax mandrels, and creates the shapes via Resin Transfer Molding (RTM), all in an effort to precisely control the ride properties. The effort can be noticed in the way you don’t notice it on a ride. The tube shapes vary over their length to dial in what the frame can resist. The top and down tubes flatten as they travel back from the head tube, which hides a 1 1/8” to 1 1/4” steerer, to give vertically and resist laterally. The seat tube starts round at the top and flattens front to back at the BB30 bottom bracket. The seat stays are flattened and swept for vertical comfort as well. The frame is basically constructed as a front end and a rear end. Besides being better able to control stiffness and compliance with this method, the frame is also more crash-worthy. The frame is covered by a lifetime warranty, and if any of the rear triangle gets damaged, Time can remove it and replace it.

Weight for the frame, fork, seatpost, clamp, and headset is 1640g in the Small, including paint.

Being a bike of the moment, the frame is designed to run both brake and derailleur cables internally. Derailleur cables can be electronic or mechanical. Electronic runs internally, mechanical externally. The cable stops can be removed and plugs are included. Both Campagnolo and Shimano will work. Run the battery inside the seatpost for Shimano, seat tube for Campy.

The stubby seatpost atop the mast has a clamp works with both carbon and metal rails. The headset is from Time, works without a star-fangled nut and comes with both a flat and 1cm tall top cap. The cap is part of a patented Time design that holds the fork in adjustment without the downward pressure of the stem. Max recommended tire width is 25mm, though most 28mm tires will fit as well.

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