Prices shown in currencies other than USA Dollars are estimates based on current exchange rates. We will charge your credit card in USA Dollars on the day your order is shipped, and the conversion to your local currency will be done at the prevailing rate by your credit card issuer.
Shipments outside the USA are declared as “bike parts” for customs purposes and will include the actual amount paid for merchandise and shipping. Jenson USA will not mark your parcel as a “gift”, declare a value lower than the actual price paid, or otherwise prepare false customs information.
Please Note: Pictures are for illustration purposes only. Cassette and Rear Derailleur are sold separately.
The OneUp 40/42T Sprocket is a cost effective way to extend the gear range on your 10-speed drivetrain. Compatible with both 1x and 2x drivetrains, the OneUp 40/42T Sprocket easily installs to your 11-36T or 12-36T cassette (not compatible with all 10-speed cassettes; see below for details). To install, you simply remove the 17T cog and 1 cassette spacer from your freehub to make room to slide this giant cog on –better yet, the OneUp 40/42T Sprocket now ships with a 16T cog to replace both 15T and 17T to provide more even cassette progression which results in a smoother cadence with improved shifting.
|Sprocket Material||7075-T6 (40/42), Chrome plated hardened steel, (16T)|
|Sprocket Weight||18g (16T), 70g (40T), 71g (42T)|
|Typical 3x to 1x System Weight Decrease||367g|
|Cassette Range Improvement||11% (40T) 17% (42T)|
The OneUp adapter sprocket is compatible with most 10 speed mountain setups running an 11-36T or 12-36T cassettes. That being said, please see the Compatibility Chart on OneUp's website to see if your cassette is compatible with an 40/42T Sprocket. You can view the compatibility chart by clicking HERE
Jenson USA ships worldwide, including APO/FPO addresses. For a quote, simply add the items you are interested in to your shopping cart and look for the "Shipping Options" box. You don't have to login or create an account to see shipping charges.
Some manufacturers restrict where we can ship their products. If this item has shipping restrictions, they are listed below. If you'd like to buy an item that we cannot ship to your preferred address, we can accept your foreign credit card and ship to a USA address for you.
Get free shipping with your $50 purchase today when you choose Standard Shipping at checkout. Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items
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Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.
Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.