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Radon ZR Race 27.5 FrameIf you're looking for a balanced yet fast alloy hardtail frame, the Radon ZR Race 27.5 may be just the reliable and efficient partner you've been waiting for.
Balanced hardtail: Radon ZR Race 27.5 Aluminium Frame in black white redThe ZR Race27.5 (650B) line is intended for the ambitious type of rider that is looking for a lightweight but sturdy hardtail for training and competition. The ZR Race 27.5 frame is made from 7005 aluminum with an octagon-shaped down tube, a definite eye catcher and X-12 dropouts. Internally routed cables are shielded from the elements and provide the frame with a clean look. Typical for x-country race bikes, the geometry reflects the designer’s intentions to make the bike as fast as possible. The different models of the ZR Race 27.5 family underline this ambitious claim. If you place high value on quality and you are looking for a versatile hardtail with a lightweight frame, then you have found your match.
Product features - ZR Race 27.5 Frame
- Material: Aluminium, X12
- Seat post: 27.2mm
- Seat clamp: 31.8mm
- Front deraileur: Direct Mount - Down-Swing / cable routing from below
- Headtube diameter: Tapered 1 1/8" (ZS 44mm) semi-integrated - 1 1/2" (IS 52mm) integrated
- Bottom bracket housing: Pressfit 92mm
- Disc brake mount rear: Postmount (160mm)
- Wheel size: 27.5"
- Recommended Fork Travel: 100mm
- Dropout: Thru Axle X12 (12x142mm)
- black white red
- approx 1700g (18")
Scope of delivery
- Radon ZR Race 27.5 Frame black white red
TechnologiesIntegrated 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.
Integrated Post Mount
The post mount rear brake system is found on all carbon fiber frames and top aluminum full suspension models. Two bolts and the IS adpater arent needed anymore, and fewer parts means less weight. In this case we save 30 grams. This may not sound a lot. But there's potential to save weight in every detail.
Press Fit BB
With Press Fit bearings, the bottom bracket bearings are pressed directly into the frame and not screwed in as usual. This gives a wider bottom bracket shell and allows us to build a wider down tube and more broadly-spaced chainstays. Every millimetre of additional width gives a significant improvement in lateral stiffness.
This steerer tube design is stiffer than a conventional straight steerer and yields a more secure ride feel even in difficult terrain. Minimal flex at the front of the frame means the greatest possible steering precision. With the larger steerer, the forks become more rigid. At the same time weight is saved due to the absence of bearing shells as the lower bearing is fully integrated into the head tube. On all of our CUBE carbon models the upper bearing shells are also directly in the frame, so that once more a few grams are saved and the energy transfer is very direct.
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.
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.
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