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    ACTIVE ENERGY EFFICIENT SUSPENSION ACTIVE Energy Efficient Suspension is Ellsworth’s next generation fully-active rear suspension system engineered as a maximum pedal-efficient design for riders who want uncompromised ride quality both up and down the hill. The foundation of ACTIVE is our Instant Center Tracking technology that evolved over 17 years. Next generation enhancements (Carbon Torsion Arch, Hex Taper Axle, Hex Taper Rocker Locker, Torque Tube Pivots) dramatically increase stiffness and durability. Together as a complete system, these elements culminate in a suspension that provides better traction, more control, and a greater ratio of pedal power to forward momentum than competitive designs. ACTIVE gives you the ability to ride harder trails than you’d imagined, and you’ll ride farther and faster with less fatigue.

    ACTIVE provides our legendary pedal performance and bump absorption across the board from big hits to small chatter. Unlike other suspensions that rely on a heavy-handed use of anti-squat to maintain pedalling efficiency, ACTIVE is designed to be fully alive and active while coasting AND pedalling. Without built-in forces to counteract the movement, the suspension is always free to respond to bump input from the trail. In fact, most of our riders prefer to climb with the rear shock in the open position. Tough climbs are more comfortable, and you’ll have more traction at all times.

    Chainstay growth is negligible throughout the rear suspension travel range so pedal feedback is minimized. The effect is that you’ll have more control through highly technical sections of trail and an instant-on pedal force when tackling power sections of the ride. It just takes one ride to know. ACTIVE Energy Efficient Suspension sets the new standard. Always Active. Always Efficient.
  • E-DEN

    The Ellsworth e-Den is an electronics storage area, dedicated to safe and tidy storage of your Di2 battery and wire junction within the downtube of the frame. It uses a typical seatpost style cylindrical battery, but its storage in the e-Den still allows you to use a dropper seatpost. All of the electronics and associated wiring is tucked inside the frame and away from the hazards of the trail or a tightly packed shuttle rig. This makes initial installation a breeze, maintenance is easy, and your investment is always secure. Not running Di2, well the e-Den provides you additional removable storage for those little items you want to keep hidden but accessible.

    The Ellsworth Hex Taper Rocker Locker is our next generation custom machined 7075 pivot pin. It employs a tapered hexagonal shape on both ends that interface with a corresponding hex socket in each rocker plate to effectively lock the system together as one unit for extreme torsional stiffness. It installs through the left side rocker plate, through the shock eye, and into the right rocker plate. Because of this, it is possible to remove the pin, and the rear shock, while the rocker plates remain in place. This makes shock service easier than ever. Its hardened surface glides through durable, IGUS bushings in the shock eye for a stiction-free assembly. It’s a small detail, but it plays a big role in making our ACTIVE rear suspension the best system on the market.

    The Ellsworth Hex Taper Axle employs hexagonal shaping on both ends to effectively lock the dropouts and hence the seatstay assembly together into one unit that seriously resists torsional deflection. The dropout/axle interface is tapered on both sides for easy axle removal as well as offering the ability to preload the whole assembly to eliminate axial and radial play in the rear end. It is bombproof, lightweight, and easy to use with our tool-free tension system. We've built our Hex Taper Axle system to meet the modern 12x148mm Boost standard.

    Ellsworth Aluminum bike frames provide all the excitement, function, and efficiency of our carbon fiber frames, but at a lower cost. We’re still making these in the USA, and we’re proud of it. Prior to being welded, each frame tube is milled by hand for a perfect, gap-free alignment with the other tubes as the frame is assembled in the jig. These tight joints ensure that the frames can be welded to perfection for maximum strength, stiffness, and durability. Before finishing, the frames are heat treated and shot peened to normalize stresses from welding and to make them as strong and as durable as possible for many years of fun on the trails. All of our aluminum frames are anodized to show off the flawless craftsmanship and to protect the aluminum alloy from corrosion, inside and out. Like our carbon production, you can be sure that our aluminum frames are made with the same social and environmental stewardship, and that are manufacturing practices minimize waste and raw material us.

    Ellsworth Carbon Fiber bike frames are very lightweight, yet they possess the strength and stiffness necessary to survive the rigors of hard riding in varied terrain. We can create this magical blend of physical characteristics because the orientation and number of each individual layer of carbon fibers in the production frame is specified according to a carefully engineered layup design. We purposely use a 3k weave outer layer because it adds durability over a unidirectional layer. Your bike is more crash resistant, and the woven finish evokes that classic carbon fiber look. The result is a composite structure that provides the best possible ride quality, durability, and performance. We also offer the reassurance that your bicycle was manufactured in a socially and environmentally responsible manner. Our high-modulus Toray carbon is certified and carefully tracked from its creation all the way to its use in our frame molds. Our designs minimize the total amount of material used, and our processes minimize waste. Our state-of-the- art manufacturing facility in Taiwan exercises responsible practices, and we make sure to properly control the dissipation of carbon particulate in the finishing process. Our goal is a precise balance of high-tech manufacturing and stewardship.