Rose RC55 28”/700C Carbon Road Bike Rear Wheel SRAM XDR | 24 Spokes 

The Rose RC55 is 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. 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.  
While the front wheel is fully exposed to the wind and has adapted to the increased tyre widths, the air is already highly turbulent when it hits the rear wheel and the transition to the tyre is less noticeable here. The RC55 rear wheel therefore has a profile width of 30.5 mm, which is a whole 3 mm narrower than the front wheel, bringing the weight of the entire system down to just 1360 grams. The curved shaping and the profile height of 55 mm are nevertheless clearly aerodynamically designed to increase riding stability even in crosswind conditions and to benefit from the sail effect even at a low angle of attack. The profile was optimised for this in countless wind tunnel simulations – with a reduction in steering torque of as much as 50 percent compared to its predecessor.   As with the front wheel, the inner rim width of the RC55 rear wheel has increased to 23 mm. With modern tyre widths of 28 mm and more, the tyre thus has better support, more road contact and can 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. The 24 Sapim bladed spokes with internal spoke nipples have the same effect and also contribute to the stability and aerodynamics of the wheel. In addition, new plain bearings and seals reduce frictional resistance, making the RC55 even faster. The reinforced hub flange on the drive side is also designed to withstand higher forces due to the large cassettes of singlespeed drivetrains, which are increasingly being used for demanding classic races in particular.   Conclusion: With the RC55 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 RC55 rear wheel, you get nothing more and nothing less than one part of the most sophisticated and 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: Sapim CX-Ray Straightpull Aero spokes (dimensions: 2.0 - (2.25 x 1.25) - 2.0) 
• Number of spokes: 24 pcs 
• Rear wheel spoke length: 274 mm left / 270 mm right 
• Spoke nipples: SAPIM aluminium nipple (inverted) 
• Spoke pattern: 2-cross  Hub: 
• Model: ROSE Aero by NEWMEN, Rear 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) 
• 4 cartridge bearings (doubly-sealed) 
• NEWMEN FADE-R pawl system (3 pawls, 10.9° degree engagement) 
• Weight: approx. 201 g  Freewheel body standard:  
• SHIMANO HG Spline L   Cassette compatibility:  
• SHIMANO 8-/9-/10-/11-speed Road/MTB cassettes and SHIMANO ROAD 12-speed cassettes  
• SRAM 8-/9-/10-speed Road/MTB cassettes  
• SRAM 11-speed Road cassettes  
as well as other SHIMANO HG-compatible cassettes.  
(Please note - Depending on the cassette, a 1.85 mm spacer ring may be required!)  Axle: 
• Rear hub: 12 x 142 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: 
• Rear wheel: approx. 730 g  In the box: 
• 1 ROSE RC55 Carbon 28" road bike rear wheel (SRAM XDR) 
• 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