USA orders totaling $100 or more receive free shipping.
This applies to standard shipping in the contiguous 48 states and military APO/FPO addresses only. Oversized items are excluded from the free shipping offer.
All other shipping charges are shown in the cart before checkout. Free shipping does not apply to orders shipping outside the USA.
For complete information, please see our Shipping page.
If you are a local customer choosing the Store Pickup option at checkout,
please wait to receive an email saying your order is ready before coming to pick it up.
Local orders may not be ready the same day they are placed.
Returns for eligible products are accepted within 30 days of the purchase date. Some exclusions apply.
For complete information, please see our Returns page.
Finally! A reliable, accurate gear calculator for 700c wheel track bikes so you can spin the perfect gear ratio on the track or in the streets.
Most, if not all, gear calculation charts online and found in apps are not very accurate. The nerds at Affinity crunched the numbers and created a simple, easy to use wheel chart that generates 100% accurate calculations.
Rotate the durable plastic chart to choose your chain ring size. The window displays the results of your chain ring & cog ratio. Boom. Done.
• made in USA
• measures 8.5" in diameter
• 342 total calculations using a wide range of chain ring variants (47-65t), six cog sizes (12-17t) & three tire sizes
• results in both inches and meters
RELATED PRODUCTS
RECENTLY VIEWED
JOIN OUR MAILING LIST
All the cool kids are doing it. You want to be cool, right?
