EXTRALITE Wheelset 28" Road | CyberDisc 339 with BERD Textile Spokes | Shimano Road
The CyberDisc 339 from Extralite is a road wheelset in a class of its own! Designed for competition, the 989g lightweight wheels offer impressive acceleration and are made for the steepest ramps in the race profile. The medium-height aero rims are made of special high-performance fibers from Toray. The leading manufacturer of high-quality carbon fibers forms the basis for many exciting lightweights on the market. Very light Hi-Rigidity Fiber is used, which is characterized by exceptional stiffness and stability. The asymmetrical arrangement of the spoke holes achieves a more even spoke tension, which increases the reliability of the wheelset and minimizes maintenance. The generous inner and maximum outer width of the rims are optimized for tire widths of 25 to 32 millimetres and integrate the rubber in an aerodynamically favourable manner. Thanks to the hookless rims, the wheelset is ideal for tubeless use in order to take full advantage of the improved puncture protection and rolling resistance properties of modern tubeless tires.
CyberHub SPD 3+ Hubs
The ultra-light Extralite CyberHub SPD 3+ hubs are an Italian masterpiece. The one-piece hub body is precisely manufactured from high-strength 7075TX aluminum using state-of-the-art CNC technology. 7075TX is a variant of the 7075 aluminum alloy, which is mainly used in the aerospace industry due to its particular hardness and resistance. The alloy offers a perfect combination of low weight and high strength, making it ideal for critical applications where high structural integrity is required. At the center of the hub, double-sealed stainless steel bearings rotate on a 17 millimeter thick aluminum axle. The axial play can be precisely fine-tuned via a micro-tuner to prevent unwanted movements and vibrations. Thanks to the straightbull design, the spokes are bolted directly into the hub instead of being guided through traditional storage holes. This ensures a considerable reduction in weight, increases the load capacity of the wheels and gives them a modern appearance. A pawl freewheel provides propulsion. Two pawls engage in a titanium ring with 32 engagement points. This reduces the free travel and at the same time reduces wear.
BERD Textile Spokes
BERD textile spokes are the crowning glory of any wheelset. Made from special polyethylene, the textile spokes are lighter, stronger and more resistant than conventional metal spokes. Flexible enough to compensate for forces and stiff enough to react directly to powerful acceleration, the wheelset with BERD spokes offers balanced handling and exceptional riding comfort.
All Extralite wheels are handmade in Italy with high precision and creative passion and stand for outstanding performance, exceptional lightness and a quality of workmanship that is second to none.
Technical data:
Area of application: Road
Wheel size: 28" (ETRTO: 622 x 21)
Rim type: clincher and folding tires
Brake type: disc brake
Brake disk mount: 6-hole
Material hubs: 7075TX aluminum
Rim material: Tory Hi-Rigidity fiber
Spoke material: polymer fiber
Inner width: 21 mm
Outer width: 27 mm
Rim height: 39 mm
Number of holes: 24
Profile offset: 2.6 mm
Spokes: BERD textile spokes, straight pull
Spoking pattern front: disc side double crossed, non-disc side radial
Spoking pattern rear: drive side double crossed, non-drive side radial
Axle standard front: 12x100 mm thru axle
Rear axle standard: 12x142 mm thru axle
Front bearing: 2x deep groove ball bearings, stainless steel
Rear bearing: 4x deep groove ball bearings, stainless steel
Seal: double sealed
Freehub body: Shimano Road
Freehub type: pawl freehub, 2 pawls, 32 ratchet points
Tubeless compatible: yes
Recommended tire width: 25-32 mm
Maximum air pressure: 25 mm = max. 6.5 bar (94 PSI), 28 mm = max. 5.5 bar (80 PSI), 32 mm - max. 4.5 bar (65 PSI)
Maximum system weight: 90 kg
Valve hole: Presta valve (SV)
Color & finish rims: black, matt UD finish
Decals rims: lasered black graphics with glossy lettering
Color & finish hubs: black, glossy
Decals hubs: lasered matt white lettering
Weight according to manufacturer: 990g
Weight self-weighed: 989g
Scope of delivery:
1x Extralite front wheel CyberDisc 339 with BERD textile spokes
1x Extralite rear wheel CyberDisc 339 with BERD textile spokes | Shimano Road
1x Extralite Super1 grease for freewheel | 5g
1x spare spoke
EUH208_c8,H302,H315,H317,H318,H332,H373,H400,H410,H411,H412,H413,N116,N118,N125,P273,P360,P412||
EXTRALITE Screw Set ExtraBolt 9.1 | M5x9 Titanium black for Brake Discavailable from stock
