ROSE RC55CS 28"/700C Carbon Road Bike Front Wheel | 21 Carbon Spokes 

The Rose RC55CS are the result of consistent further development of modern road bike wheels. Developed for the Shave model range and designed to meet the demands of today's bike races, they combine high aerodynamic efficiency with controlled riding behaviour and maximum weight savings. Wider tyres, higher average speeds and the resulting increased demands on riding stability formed the clear framework for the development. The result is a system with two different rim profiles, true to the principle of 'aero in the front, lightweight at the rear' – wider and maximally aerodynamic at the front, more lightweight at the rear.     As the front wheel is fully exposed to the wind, aerodynamics are particularly important here. Increased tyre widths pose a design challenge, as the rim must not be in the slipstream of the tyres to ensure even air pressure distribution. The profile of the RC55CS front wheel has therefore been increased to a width of 33.5 mm in order to create an almost closed surface and aerodynamic effect even with modern tyre dimensions of 28 to 32 mm. In comparison, the rear wheel rim is 3 mm narrower, as it encounters different flow conditions, thus reducing the weight of the entire system to just 1280 grams. 
The curved shaping of the rim and the profile height of 55 mm are also optimised to offer the greatest possible riding stability in crosswind conditions and to benefit from the sail effect even at a low angle of attack. In countless wind tunnel simulations, the profile was continuously refined – resulting in a 50 per cent reduction in steering torque compared to its predecessor.      As with the rear wheel, the inner rim width of the RC55CS front wheel has increased to 23 mm. This gives wider tyres better support, more road contact and allows them to be ridden with less air pressure, especially in tubeless mode. This means increased grip and comfort, whether in tight crit corners or on challenging cobblestone passages. Those who want to follow the tubeless trend will also be pleased with the moulded contact surfaces on the valve hole, which make it easier to tighten the valve nuts.     Maximum speed was also a must for the rear hub, which was developed in collaboration with the specialists from Newmen. The hub body is uncompromisingly narrow to enable improved airflow and additional weight savings. Exclusively for the RC55CS wheelset, 21 ultra-light carbon spokes are also used, which save a further 80 grams of weight compared to the 24 steel spokes of the RC55 and bring them up to absolute competition level. In addition, new plain bearings and seals reduce frictional resistance, making the wheel even faster.     Conclusion: With the RC55CS wheelset, we have really gone all out so that you can give your all on the road. Whether in a race against others, the clock or yourself. With the RC55CS rear wheel, you get nothing more and nothing less than one part of the lightest, stiffest and most aerodynamically advanced road bike wheelset we have ever built.    Wheel size: 
• 28” / 700 C 
• ETRTO: 622–23    Rim: 
• Model: ROSE RC55  
• Rim type: clincher 
• Rim material: Carbon 
• Symmetric rim profile 
• Rim depth: 55 mm  
• Rim width: 30.5 mm 
• Offset: 0 mm 
• Inner rim width: 23 mm 
• Tubeless ready 
• For Presta valve    Spokes & nipples: 
• Spoke type: VONOA Aero Carbon double thread spokes 
• Number of spokes: 21 pieces 
• Spoke length front wheel: 272 mm left / 258 mm right 
• Spoke nipples: VONOA aluminium nipple, 5.5 mm 
• Spoke pattern: 2-crossed (brake side), radial (non-brake side)    Hub: 
• Model: ROSE Aero by NEWMEN, Front Disc 
• Housing material: CNC-milled aluminium 
• For disc brakes 
• CentreLock brake disc mount (also compatible with 6-bolt disc rotors via adapter, e.g. DT Swiss Centre Lock adapter, product code 2283716) 
• 2 cartridge bearings (doubly-sealed) 
• Weight: approx. 90 g    Axle: 
• Front hub dimensions: 12 x 100 mm (thru axle)    Clearance: 
• Recommended for tyre widths: 28-40 mm (optimised up to 32 mm) 
• Recommended rim tape width 25 mm 
• ASTM classification: 2 (for on and off-road use with jumps up to 15 cm) 
• Max. system weight: 120 kg (cyclist, bike, gear and luggage)    Weight: 
• Front wheel: approx. 600 g    In the box: 
• 1 ROSE RC55CS Carbon 28" road bike front wheel 
• 1 tubeless ready rim tape (pre-assembled, also suitable for conventional inner tubes) 
• 1 ROSE tubeless valve (70 mm)    Note: 
Tubeless sealant is NOT included in the delivery.    Crash Replacement: 
Customers whose wheels have been damaged in an accident or fall within 6 years will receive a 50% discount on a new set of wheels within our Crash Replacement Program (terms and conditions apply). 

Manufacturer: ROSE Bikes GmbH, Schersweide 4, 46395 Bocholt, Germany, www.rosebikes.de