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Cube Reaction HPA SL 27.5" Mountain Bike 2016 - Hardtail MTB
The Reaction HPA SL's extraordinarily refined design combines maximum performance with the highest possible quality. The superb aluminium frame, in combination with top components such as the complete Shimano XT 2x11 group and the new, superlight FOX 32 FLOAT suspension fork, makes it ideal for both XC races and multi-day alpine rides.
Frame
The HPA (we use these letters to denote our highest quality) chassis uses a triple butted 7005 aluminium frame manufactured with a complex, advanced hydroforming technique. 29er Agile Ride Geometry blends uncompromising efficiency for forward propulsion with lively, playful handling. Every detail has a function. The tapered head tube, X12 quick release axle at the rear and the PressFit bottom bracket shell all work together with the cross-ovalised down tube to give optimum power transmission, precise steering and phenomenal acceleration. Slender seat stays and the 27.2mm diamater seat post give added comfort.
Components
New for 2016, the slimmed down version of the FOX 32 FLOAT suspension fork with remote lockout is a perfect fit for the frame's performance-orientated character. Shimano's new XT disc brakes offer reliable braking and the Shimano XT 2x11 transmission components are both high quality and versatile, thanks to the wide-ranging 11-40 cassette. Fulcrum RED 66 system wheels with quick release axles front and rear accelerate rapidly whilst still being very stiff and strong. Lightweight components from Syntace and CUBE combine peerless ergonomics with perfect control, finishing off this high performance package.
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.
Advanced Hydroforming
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.
Aluminium Ultralite
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.
Onepiece Design
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.
The Cube Reaction HPA SL 27.5 2016 Features are:
Frame: HPA Superlite, Advanced Hydroforming, Triple Butted, ARG, Tapered Headtube, Internal Cable Routing, PressFit BB
Fork: Fox 32 Float FIT4, 15QR, Tapered, 100mm
Headset: FSA Orbit Z-t, Top Zero-Stack 1 1/8" (OD44mm), Bottom Integrated 1 1/2"
Bars: CUBE Flat Race Bar Pro, 720mm
Stem: CUBE Performance Stem Pro, 31.8mm
Shifters: Shimano XT SL-M8000-I, I-spec, 11-Speed
Front Mech: Shimano XT, FD-M8020-D, Direct Mount, Side Swing
Rear Mech: Shimano XT, RD-M8000-DGS, ShadowPlus, Direct Mount, 11-Speed
Chainset: Shimano XT, FC-M8000, 36x26T, 175mm
Front Brake: Shimano XT BR-M8000, Hydr. Disc Brake 180mm
Rear Brake: Shimano XT BR-M8000, Hydr. Disc Brake 160mm
Rims: Fulcrum Red 66, 28/28 Spokes, 15QR/X12
Front Hub: 15QR
Rear Hub: X12
Tyres: Schwalbe Rocket Ron, Kevlar, 2.25, LiteSkin Front Schwalbe Racing Ralph Kevlar, 2.25, LiteSkin Rear
Seatpost: Cube Prolight, 27.2mm
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