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AbsoluteBlack Oval Direct Mount Chainring For Cannondale Hollowgram Spidering Road Cranks 11 S Black

absoluteBLACK

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Tooth

52-36

€239.99

Out of stock

50-34

€239.99

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Description


AbsoluteBlack Oval Direct Mount Chainring are designed here for the Hollowgram crank family : SI, SL, SISL, SISL2. Incredibly stiff and light. Shifting is superfast thanks to the patented shift ramp design. Sold as a set only. This is the most premium oval chainring on the market with scientifically proven performance gains.
The chainrings use a bcd mounting system, so they are only sold in sets of 50/34 or 52/36T combinations.

Oval chainrings do not produce more power, they increase pedaling efficiency through better power transmission. That is to say, it is not necessarily by pedaling harder that you will go further. But the less force you lose, the more energy you keep, allowing you to pedal harder when you need to and thus reducing your general fatigue. That's why you can ride faster, longer and further with oval chainrings.

Studies conducted by the University of Primorska, Slovenia, show significant differences between the use of AbsoluteBlack Oval chainrings and conventional round chainrings. It is proven that using an oval chainring can provide up to a 9% increase in pedal stroke efficiency, up to 7% less oxygen consumption, 15% less breathing and up to a 10% decrease in heart rate.

Details : 
  • Weight : 50/34T (184g), 52/36T - (188g)
  • Color : Black
  • Compatibility : Cannondale Hollowgram Si, SiSL, SiSL2.
  • Compatible : 11 S
  • Material : CNC machined 7075 Txxx aluminum. Long life construction. Anodized finish.
  • Designed in the UK. Made in Poland (EU).
  • Chain-line : Same as the original Spidering.
  • Ovality: Optimized for each size separately. 3D- 6.5%; 36D- 11.4%, 50/52D - 10-11.2%; Timing of 108 -110.5° after TDC (top dead center) - Ideal for road climbing. Patent Pending
ADVANTAGES OF OUR DIRECT MOUNT OVAL CHAINRINGS :
  • Thinnest design for excellent strength to weight ratio.
  • Unique special oval shape (patent pending).
  • They save weight because they don't need spider and tray bolts.
  • Superb quality and great look.
  • You will ride faster when using ovals.
  • You won't feel the oval shape at all.
  • Reduces wear on the knees
  • We have mastered our oval decks to perfection, so you can get the most out of the oval/elliptical shape.

HOW TO ASSEMBLE A DOUBLE OVAL CHAINRING :

Remove the crank from the bike. Open the lockring using the Cannondale Hollowgram KT012 spider removal tool. Generously grease the corrugated interface of the crank arm, then fit the new spider chainring in the same manner as the original chainring. Apply a small amount of medium strength Loctite to the threads of the locking ring and tighten to approximately 47-54Nm. You will need the "Cannondale Hollowgram Spider Removal Tool KT012" or similar to open and close the ring. As with all chainrings, the bolts that hold Cannondale Spidering chainrings together should be checked regularly to ensure they are tight. Each of the five bolts should be tightened to approximately 5Nm. 
 

MORE INFORMATION

Features

Position Internal
External
BCD Direct Mount Hollowgram
Tooth 52-36
Speed 11
10

Customer

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