Fulcrum Racing Speed 55 Disc Brake Wheelset

Fulcrum are a division of the Campagnolo brand and have the same passion and drive to produce word beating cycling product. The new Racing Speed 55 is a carbon clincher disc brake the is arguably the best in class. 

The development of the Speed range has always responded to the challenge of building high-performance wheels in aerodynamic terms while also continuously keeping abreast of the latest technological and design innovations.

The new rim profile characterizing the Speed 55 DB is a further step forwards in the search for the best aerodynamic performance. The model therefore focuses on a demanding and “racing” audience. To improve the rolling resistance (and ultimately the speed) of the wheel/tire system, we designed this model in the 2-WAY FIT version, thus making it fully compatible with tubeless tires granting minimal rolling resistance, as well as clincher tires. The manufacturing process of the carbon fibre rim without holes in the internal channel – a patented construction technology – also allows a stronger and sturdier construction capable of withstanding even the most extreme racing conditions. The rim with a 19 mm inner width perfectly matches recent trends of using increasingly wider tires – a choice that further improves the aerodynamic performance of the wheel/tire system. This data has been validated by intensive wind tunnel studies and trials where new projects are tested on a regular basis. SPEED 55 DB proved to be the best option in terms of aerodynamic penetration indexes in the Fulcrum range and is derived from the profiles developed for the tubular version used by World Tour teams.

TYPE OF TIRE 2-Way fit (for clincher and tubeless tires)
RIM DIAMETER 28
DISCIPLINE Road/Triathlon
CATEGORY ASTM 2
WEIGHT 1580 g
WHEEL MATERIAL Carbon

RIM MATERIAL Full Carbon, Twill carbon fibre finish
PROFILE HEIGHT: Deep Section
RIM HEIGHT 55 mm
OUTER RIM WIDTH 26.5 mm
INTERNAL CHANNEL WIDTH 19 mm
COMPATIBLE TYRE SIZES 23 mm to 40 mm
BRAKING SYSTEM Disc brake
BRAKING SURFACE / AFS DISC BRAKE
FRONT AXLE COMPATIBILITY HH12-100
REAR AXLE COMPATIBILITY HH12-142
SPOKES: FRONT 21, Two-to-one (14 left – 7 right)
SPOKES: REAR 21, Two-to-one (7 left – 14 right)
SPOKES: MATERIAL Stainless steel – double butted
SPOKES: PROFILE Rounded
NIPPLES Aluminium
FRONT HUB Carbon, Oversized Aluminum flange
REAR HUB Aluminium, Oversized Aluminium flange
BEARINGS USB ceramic bearings – adjustable Cup & Cone system
OTHER Plasma treatment on HG freewheel body. Aluminum axle. Reflective graphics