Our HPA frame proves that aluminium hardtails can still cut it when it comes to offering high performance. For our HPA Pro we combined highly functional components with an extraordinarily high quality aluminium frame, to make a high performace bike that'll cover the whole spectrum of riding from big alpine rides to XC races. It's a bike that you'll want to check out - both for its looks and for its ride quality.
The HPA frame is made from triple butted 7005 aluminium tubes using an elaborate, advanced hydroforming process. Details like the tapered head tube, semi-integrated headset, PressFit bottom bracket shell and cross-ovalised down tube all give superb power transmission and steering precision, while the slender seat stays and 27.2mm seat post provide comfort even on long rides. Agile Ride Geometry delivers instant get-up-and-go and lively handling whether you're on a forest trail or the race course.
The Rock Shox Reba SL suspension fork with 100mm travel gives both comfort and control. Reliable braking is delivered courtesy of Magura's lightweight MT2 hydraulic disc brakes. Shimano XT gear components - with an XT double chainset (36x26) and rear derailleur - are the last word in reliability, while the wide-ranging 11-40 cassette offers the broadest possible spread of gears. Answer Attack MA system wheels with quick release axles both front and rear combine rapid acceleration with the durability to tackle the most demanding trails. CUBE Pro contact points and a sporty, comfortable Sellte Italia SC1 saddle round off this performance orientated hardtail.
Adaptable X12 Hanger
We optimized our new dropout design based on the Syntace X12 through-axle system, enlarging the area of the frame where the hanger is mounted. We can now fit the longer Direct Mount hangers. Shifting precision and stiffness is therefore improved. With the new design it's also possible to swap the whole contact area of the axle with the hanger should the system be worn out.
The new STEREO , FRITZZ and HANZZ models are built using Advanced Hydroforming. Conventional hydroforming processes cannot achieve these custom shapes and technical advantages. As this manufacturing method reduces the number of welds, the weight is reduced while durability is increased. All
Agile Ride Geometry
We ran innumerable tests to develop the Agile Ride Geometry in our series of big wheel bikes. We also added the 27.5in wheel size to the very well received portfolio. Three important details lead to the very agile character. Increased fork offsets let us achieve the same trail as our 26in bikes without having to steepen the head angle, thus maintaining generous toe clearance to the front wheel. Secondly we shortened the chain stays without compromising the seat angle. We invented a patented construction to mount the front derailleur to give us more tyre clearance while keeping a conventional seat angle, leading to a perfect riding position for every rider size. Last but not least we kept the BB height the same as on our 26in bikes. These measures lead to a natural riding position. Every mountain biker will feel immediately at home on a CUBE 29er or 27.5.
Very high tensile strength heat-treated 7005 aluminium alloy is developed for the highest requirements. It is very stiff, fatigue resistant, corrosion resistant and has high elongation. Our Superlite tubes are triple butted, giving very light tubesets with a high level of stiffness.
High Performance Aluminium
For our high end bikes we use High Performance 7005 Aluminium alloy which has a very low density combined with high strength due to the alloy elements and the hardening heat treatment. By triple butting or even quadruple butting (as in the REACTION , HANZZ and AERIUM models) to give different wall thicknesses in one tube, aluminium tubes are reinforced where required and made lighter where possible. In this way, we succeed in getting material where its needed most. In addition we use special tube shapes, manufactured with hydroforming technology to better cope with directional forces. The low density and high strength as well as the butting and the hydroforming technology enable us to make high performance frames with an ultimate level of stiffness.
Integrated Cable Routing
Internally routed cables offer many advantages. Cables are protected from dirt for longer life, weight is saved thanks to the absence of external housing and the bike has a clean, sleek appearance.
Welded joints in our high-quality aluminum frames are specially finished via this method and create the impresssion of seamless tube design. This generates the visual effect of moulding and ensures high load bearing capacity.
X12 Through Axle
In this system, a cone is used to form a play-free connection. It is only necessary to tighten the axle from one side. The position of the wheel is done by an insert in the right-hand dropout which is secured by a bolt. The main advantages of the Syntace system are quick and simple changing of the wheel, reliable position of the brake disc and higher stiffness of the rear of the bike. This allows the assembly to be made lighter than a conventional through-axle.