Questions? Call our experts!
1.800.651.4050
X
COVID-19 RESPONSE
DEAL OF THE DAY
ALL SALE ITEMS
SHOP CLOSEOUTS
Click to zoom

Surly
Splined Single Speed Cog

Mfg PartNum:
  (5 customer reviews)
299
POINTS
Earn $2.99 in Rewards credit. Click to learn more.
This size is not eligible for Rewards points
In Stock Now
$29.99
Please Confirm Size
This item is currently out of stock. Click Notify Me to receive an email when the item becomes available.
InstantPrice MatchWhat is this?
Free Shipping on Orders Over $50*

Single up.

Surly's Splined Single Speed Cogs are machined from CroMoly and then heat treated and chrome plated for a durable and smooth finish for your single speed drivetrain. The teeth have a tall profile to help keep the chain engaged, and the spline width is a wide 4.35 mm that spreads the load over the freehub body to prevent gouging. It's also the same width as the spacing of a 9-speed cassette, so if you felt like it, you could build a little mini-cassette out of a few different sizes and use a 9-speed shifter and derailleur to change between them. Sizes 17T and larger are drilled out to save weight, and they're compatible with 6 - 9 speed 3 / 32" chains, but Surly recommends using a narrower 8 or 9 speed chain.

Spline pattern is for Shimano / SRAM freehub bodies.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

 

Mfg PartNum: FW2076 

 

Cassette Type: Freewheels/ Fixed Cogs 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
(4)
(1)
(0)
(0)
(0)
(80%)
(20%)
(0%)
(0%)
(0%)
Best built cog available.
rating
by Anonymous

I would never use aluminum again. These are the ony way to go for serious single speeders

Reviewed 3/2/2019
Was this review useful to you? Yes/No
Thank you for your feedback.
Very Nice
rating
by Anonymous

One of the best options(for price) for single speed cogs, these cogs have a large enough surface area which helps avoid eating into freehub bodies.

Reviewed 6/1/2015
Was this review useful to you? Yes/No
Thank you for your feedback.
Surly makes great gear
rating
by rmictks
Competitive Racer
Wichita Kansas

Installed this on my KONA Private Jake to make it SS. runs quit and smooth.

Reviewed 3/15/2021
Was this review useful to you? Yes/No
Thank you for your feedback.
SS cog to rule all other cogs
rating
by reylloc
Cycling Enthusiast
Texas

I built up a 20lb SS hardtail this summer and tried an 18 and a 20 tooth cog, b ut the 19 was other sweet spot. The Surly was best because not only did they make a 19, but it has a wider base so it cannot hurt the cassette carrier, as some of the other cogs were not so nice. Don't cheap out and ruin your free hub - and an aluminum cog wont; last long on a SS.

Reviewed 1/15/2021
Was this review useful to you? Yes/No
Thank you for your feedback.
My Go-To Cog
rating
by EdT
Cycling Enthusiast
Los Angeles
1 of 1 customers found this review helpful.

I have used Surly cogs for 12+ years on my MTBs. Cogs between 16t - 22t have equipped my bikes without issue. There are lighter, flashier cogs on the market but Surly cogs are strong and reliable plus their price makes them a very good value, full stop.

If you can afford those expensive, unobtainium cogs, go for it but Surly cogs are tough to beat.

Reviewed 11/26/2020
Was this review useful to you? Yes/No
Thank you for your feedback.

Articles will open in new tab.

Comparing bottom bracket types and standards.
You wanna go fast? Join the ceramic revolution!
Keep things running smoothly on your road, mountain, or commuter bike.
Make your upgrades count. Here's the equipment that will help you ride your bike faster.
Campagnolo vs. Shimano vs. SRAM: demystifying groupsets.
What to consider when selecting a crankset for your road bike.