Absolute Black Cannondale OVAL Hollowgram Direct Mount N/W Chainring

£41.40 £46.00

Absolute Black Cannondale OVAL Hollowgram Direct Mount N/W Chainring

Premium 1X Cannondale Hollowgram direct mount Oval chainrings are designed for Hollowgram crank family. Compatible with old and newest models.

Size (Mass +/-1g):

30T(61g), 32T(66g), 34T(72g)

Color

Black,  Green

Compatibility

Cannondale Hollowgram Si, SiSL, SiSL2 and newest F-Si

Material

cnc machined 7075 Txxx Aluminum. Long-lasting construction

Finish

anodized

Chainline

47-50mm (5.7mm offset). Chainline depends on the length of the axle you use and spacers configuration.

Ovality

Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent Pending

Advantages of our special Direct mount chainrings:

 *Finest design to provide excellent weight to strength ratio
*One of a kind special oval shape (Patent Pending)
*Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months!
*They save weight because they don't need the spider and chainring bolts.
*The ability of installation of a smaller ring sizes that can't be mounted on regular spider.
*Superb quality and great look.
*You will ride faster using ovals. If you keep using round ring then others will get quicker.
*You will not "feel" the oval shape at all
*Reduces stress on knees

Hollowgram Oval chainrings allow for flawless 1x10/11 drivetrain setup. Reliable, extremely light, stiff and clean looking

Why our oval chainrings work

Oval (elliptical) chainrings work because a rider does not produce power evenly through a pedal stroke; they maximize the part of the stroke where power is produced and minimize resistance where it isn't. Oval rings make the spin cycle a lot smoother and are easier on legs while climbing. Believe it (or not), but a round chainring doesn't transfer torque to your rear wheel as smoothly as an Oval one. You will actually feel your stroke to be more "round" with an Oval shape than with a round chainring.

Why it matters

Traction, Traction and Traction. With oval rings rear tire traction improves greatly on loose and slippery terrain. Smoother power delivery to your rear wheel means that you will be able to maintain better, constant cadence; get less stress on the joints (knees) and therefore be able to keep certain level of effort for longer. This results in higher average speed. Moreover, 11 studies made by various Universities in the World show that using oval chainrings human legs utilize more muscle groups (compared to round one), but each of them to lesser degree. Load from pedaling an oval chainring is spread over greater muscle mass which in effect gives you the feeling of fresher and more relaxed legs. It is world's finest oval chainring for Cannondale Hollowgram cranks backed by tens of thousands of customers.

What size should I choose?

* 30T Oval chainring has the ovality of 28/32T and is best for someone who uses currently 28 or 30T round ring.

* 32T oval ring will suit best someone who uses 31 or 32T chainring currently. While pedaling, you will feelQwerty Cycles quite similar effort to the one riding round 31T ring (as the smallest diameter of the oval is 30T), but you will gain the speed similar to riding 33/34T chainring.

* 34T Oval chainring has an ovality of 32/36T and is best for someone who uses currently 33 or 34T round ring.

Mounting instruction:

Generously grease the waved shape of the crank arm, then put the chainring so that fits completely(convex side to the crank arm). Put small amount of medium strength Loctite on the lockring threads and tighten it with torque of about 47-54 Nm. 

You will need "Cannondale Hollowgram Spider Removal Tool KT012" or similar to open and close the lockring. 

The most advanced, Patent Pending tooth profile on the Market guarantee minimum 12 months of excellent chain retention capabilities! We mean it. You can finally take your chainkeeper off the bike.

Absolute Black Cannondale OVAL Hollowgram Direct Mount N/W Chainring
Product Images (click to enlarge)
  • Absolute Black Cannondale OVAL Hollowgram Direct Mount N/W Chainring
  • Absolute Black Cannondale OVAL Hollowgram Direct Mount N/W Chainring