Roata Roata spate Fulcrum RAC Quattro LG HG11s negru #43465

Performance + versatility = maximum satisfaction. Racing 4 offers much and gives more -a wheel worth trying!Racing 4 is the classic trick up your sleeve, because it gives that extra something, whatever the terrain. Its light, responsive medium profile will always offer new discoveries, with enviable superiority and eyes fixed on performance.Any resemblance to higher category models, as used on the bicycles of champions, is not casual. The Fulcrum's R&D department has capitalized on experiences from developing similarly extreme rims to create this package suited to diverse requirements,which makes no attempt to disguise its noble pedigree.The 35 mm profile was a successful hunch, because it turns out to be a winning combination of great appearance and great performance. This medium profile makes all the difference on the flat at cruising speeds, but is no less excellent uphill, with agile and powerful relaunches.FeaturesRim material: Aluminium alloy.Internal width: 17 mm.Rim height: 35 mm.21 Straight Pull spokes.Aluminum alloy nipples.Technologies2:1 Two-to-One™When you push on the pedals, the rotational force on the sprocket induces a slackening of the freewheel spokes with a consequent loss of rim tension.This results in undesirable flex of the whole wheel and an unavoidable loss of energy. Fulcrum® has solved this classic cycling problem with its 2:1 Two-to-One™ Spoke Ratio patent, by doubling the spokes in the critical zones.Anti-rotation system™This new system raises the concept of spoking to a new level of performance for road bike and triathlon wheels ( and mtb too). The Fulcrum® engineers have redesigned the spokes and the hub housings to create a solid and unmoveable whole. The result is that the spokes:will never lose their initial tension, thus keeping the wheel perfectly reactive and centered;will remain in the position that have been studied in the wind tunnel tests to ensure the best aerodynamic penetration possible. F.I.C. Fulcrum Identification Card100% Handmade qualityRight from its inception Fulcrum® has been marked by feature that continues to this day: that is to design, prototype and industrialise all the wheels characterised by the red “F”.Indeed these take shape inside of the R&D, the leading-edge department that represents the beating heart of the Italian company.Every single component of the wheel, the materials chosen and the technologies applied are the tangible result of the effort that Fulcrum® makes every day to give you maximum performance and reliability.To ensure the top performance and reliability of its products, each project, for the production stage, must undergo a series of very strict tests that validate what has been conceived and designed up to that moment (fatigue test, crash test, tyre burst test, enviroment test, 100% manually assembled and electronically checked).This is why, from its 2012 range, Fulcrum® wanted to supply each wheel with its own Identity Card (ID) which uniquely identifies the wheel and certifies that it has been manually assembled and has passed all tests required by the strict quality protocol.RDB™ Rim Dynamic BalanceThe concept is simple and elegant: balance the weight of the gasket, with an item of similar weight placed on the exact opposite side.Wide rim techFulcrum®’s R&D department, following requests from the competition circuit, has worked to create rims that are wider than before, about 4 mm or more than previously. This technical choice provides an ideal basis for 25/28 mm tires, the sizes currently popular.This ensures stability, excellent handling and superior comfort.Oversize flangeThe Oversize Flange was developed from the need to create a system to transmit every watt to the ground without dispersion, stiffening the wheel system where necessary, without having to add spokes or superstructures that increase weight.The oversize flange uses physics to solve the problem. It increases dishing and enables spokes to be shortened. Doubling the spokes creates a balanced system that is excellent at transmitting torque.