The newly designed Osymetric chainrings are designed to enhance a riders power output and performance by eliminating their dead spot during each pedal stroke. Catering for the serious cyclist, these Inner chainrings (4-spider) come in various sizes.
These Osymetric chainrings are not the standard 'round' type of chainrings nor are they oval or ellipse either, but asymmetric. This unique shape (twin-cam) has been designed to maximise the riders power output and performance with every pedal stroke allowing for a 7-10% power (watts) increase resulting in a gain of speed by 3%, so Osymetric claim. Not only does this increase riders performance it can reduce lactic acid by 10% also.
Picture shows Osymetric chainrings fitted to a Road bike.
Once fitted, getting used to these chainrings will take a few rides or so and your legs may feel sore after the first ride, but this is natural due to the chainring shape and the different muscle groups used during your pedaling. Once adapted though, the benefits and gain are great as you have increased you power and speed by actually doing the same if using standard chainrings. Plus your legs are benefiting from less lactic acid being produced making you ride faster and harder longer.
Osymetric and Pro-Tour Teams
Osymetric chainrings can be found in the Pro-tour peloton, but usually the their branding is blanked out due to teams sponsorship deals etc. Some riders are permitted to use them but just for performance gains only. Osymetric has clocked up podium places and victories at many races including the Criterium Du Dauphine, Tour of Romandie, Paris-Nice and on the Grand tours such as Tour of Spain (Vuelta) , Tour of Italy (Giro d'Italia) and more noticeable at the 2012 and 2013 Tour de France.
Installing these Osymetric chainrings is straightforward - similar to fitting standard rings. You'll also have to raise the front derailleur setting your upper and lower limits to compensate the mech movement. Please follow the instructions that come with the chainrings or watch the video located on the video tab above the image. Or simply pop down to your local bike shop and ask them to fit for you. We would also recommend that you fit a new chain also.
Installation Key Features
Chainrings are fitted to the crank arms and come in single, double or triple configuration. Most geared bikes use a 3/32 inch width, whereas 1/8 inch is the popular choice for track bikes and some single speeds due to its increased strength which is needed when riding a fixed wheel. Chainrings are available in a number of formats, these are known as PCD's (Pitch Circle Diameter) or BCD's (Bolt Circle Diameter), this is the spacing of the bolts that secure the rings to the crank arms. Common sizes are 74mm inner ring Shimano MTB, 110mm middle and outer for Shimano MTB, 110mm for most compact chainsets to allow for the smaller ring combo's, 130mm for Standard Shimano Road and 135mm for Standard Campagnolo road chainsets.
Manufactures of high-end performance chainrings.
The delivery options available for shipping this product along with the contents of your basket to USA are:
Wiggle ships to over 100 countries. To see what delivery options are available for other destinations you can update your delivery destination via the International Options feature at the top right of the website.
Goods are shipped from the UK. Does not include delivery charges, local taxes or import duties, if applicable.
More information on International delivery options
We will happily refund or exchange any item purchased on Wiggle if returned to us within 365 days, excluding Wiggle gift vouchers and personalized products except when faulty.
Returned goods must be unused and supplied with their original packaging, unless the goods are faulty.
Wiggle will pay the return postage costs for any faulty items.
More information on Wiggle's return policy
Only 4 products can be compared at once. Adding this product will remove the product you added to the list first.
Do you want to continue?
Wiggle Ltd. 1000 Lakeside, Suite 310, Third Floor N E Wing, Portsmouth, Hampshire, PO6 3EN, United Kingdom /
Company No: 2667809 /
VAT No: 884 2571 94
There are no facilities for customer collections or returns at this address. Please ensure any returns are processed as instructed on the Help page - Returns.
Executive Director: Stefan Barden.