Fulcrum Speed 55 DB Disc Carbon Wheelset

SPEED 55 DB

The model therefore focuses on a demanding and “racing” audience. To improve the rolling resistance (and ultimately the speed) of the wheel/tyre system, we designed this model in the 2-WAY FIT version.

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 tyres – a choice that further improves the aerodynamic performance of the wheel/tyre 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.

The SPEED range not only responds in terms of aerodynamic performance. Optimizing performance also requires the wheels to be light and run smooth. The scale stops at 1580 gr and we have chosen to add ceramic USB bearing components.

 

FEATURES

TYRE TYPE	2-Way fit (for clincher and tubeless)
TYRE SIZE	28″
DISCIPLINE	Road / Triathlon
ASTM CATEGEORY	2
WEIGHT	1580 g
RIM MATERIAL	Carbon
RIM MATERIAL DETAILS	Full carbon, “Twill” – carbon fiber finishing
PROFILE HEIGHT	Medium
RIM HEIGHT	Front and rear: 55mm

 

RIM WIDTH	26,5 mm
INNER RIM WIDTH (CHANNEL)	19 mm
TYRE WIDTH	From 23 mm to 50 mm
BRAKING SYSTEM	Disc brake
BRAKING SURFACE/BRAKES OPTIONS	AFS
FRONT AXLE COMPATIBILITY	HH12-100
REAR AXLE COMPATIBILITY	HH12-142
FRONT WHEEL SPOKE	21, Two-to-one (14 left – 7 right)
REAR WHEEL SPOKE	21, Two-to-one (7 left – 14 right)

 

SPOKES: MATERIAL	Stainless steel, double butted
SPOKES: PROFILE	Rounded, straight pull
NIPPLES	Aluminum
FRONT HUB	Carbon, Aluminum oversize flange
REAR HUB	Aluminum, Aluminum oversize flange
BEARINGS	USB ceramic bearings. Adjustable Cup & Cones system
OTHERS	Plasma treated HG freewheel. Aluminum Axle
WEIGHT LIMIT	120 kg (rider,bike, equipment andluggage)
FWB OPTIONS	HG11, Campy, XDr