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e.13 Extended Range Cog

Item #: CS224Z00
USD$69.95
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e.13 Extended Range Cog

E.13 Extended Range Cog

The Extended Range Cog brings lower gears to your 1x10 drivetrain. Currently, 10-speed cassettes only go up to 36T, which is plenty for 2x or 3x setups. However, with the increasing popularity of the 1x drivetrain the need for lower gears is what’s keeping most riders from converting over to the dark side. The Extended Range Cog replaces another cog on your cassette to provide a lower 40/42T cog to help on those steep climbs. Recommended for use with a medium to long cage derailleur, the Extended Range Cog also includes an replacement B limit screw which is much longer than the standard B limit screw, to allow your derailleur to handle a large 40/42T cog.

The 40T option is only meant to be used with Shimano 34T cassettes. This is due to the fact that SRAM does not make a 34T and the shifting will be compromised with a 36T as the timing will not be correct. A medium or longer cage derailleur is recommended, however you still may need to use the included extended B limit screw.

E.13 Extended Range Cog Features:

  • Cog Material: EXA+ Aluminum
  • Thickness: 5mm
  • Compatibility: 10 speed
  • Ring Sizes: 40t, 42t Shimano – 42t SRAM
  • Weight: 70g (40t), 77g (42t)
3.6 / 5.0
21 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
10
3
2
1
5
Flawless. Best full range cog on market
This is flawless! I started to get a skipping noise like some of the other comments here, but to fix that you just put your B Set Screw out a little more and it'll go away. BEST INVESTMENT EVER

PROS: Easy To Install, Attractive Design, Durable, Lightweight

BEST USES: Mountain Biking, Enduro
October 8, 2014
Location:
Petaluma, CA
Doesn't work. Get a Wolftooth.
I have a Wolftooth and an E13 42th exetended cog. The Wolftooth works on both of my bikes. The E13 works on neither. One bike has American Classic hubs the other Sun Ringle, so the problem is not limited to a certain manufacture. The Wolftooth has lip the protrudes on the back side. This prevents the cog from rubbing against the hub. The E13 is actually depressed. Consequently, it rubs against the hub. I tried different sized spacers, but could never get the E13 to work properly. The Wolftooth worked right out of the box

CONS: Limited Compatibility
August 18, 2014
Location:
Bellingham
good only at the stand
Perhaps it's is very easy to install and the gears shift perfectly on the stand, one little load on the pedals make the chain stuck on the tooth. It's like having chain such on the cassette. Me and my Dremel are spending some time to make the 40T sprocket usable.

PROS: Lightweight, Easy To Install

CONS: It Doesn't Work
October 19, 2014
Location:
Brazil
NO-GO on my Norco Range
As per usual delivery was quick and fine, though there was no B-limiter screw, even though the description says it's included. Non issue for most SRAM derailleurs and they are easy to track down for a few cents if yours is missing too. M4x25 socket screws works well.

Glad Jenson has a bomb proof satisfaction guarantee return policy.
August 11, 2014
Location:
St. John's, Newfoundland
Chain jumps on the e13 42T
I bought an e13 for extended Range Cog 42T Sram. I use my e13 with Sram X9 Type 2, 10 Speed. Everything is new, derailleur, chain (PC-1071) and cassette. Chain jumps on the e13 42T, plus it deforms easily. I had to file down the teeth of Sprocket for it no longer jumps.

PROS: Easy To Install
August 11, 2014
Location:
Montreal,QC,Canada
GREAT CHAINRING!
A great product! great quality, great looking

PROS: Attractive Design, Lightweight, Durable, Easy To Install

CONS: Nothing Bad
April 14, 2015
Location:
Nogales Arizona
really good!
really good

PROS: Easy To Install
April 14, 2015
Location:
chile
Perfect
Running this on a 1x10 setup (XT) on my trail rig.
Great upgrade for minimal effort and low cost compared to say, full XX1.
Easy to install with clear step-by-step instructions and extra longer B screw.

PROS: Lightweight, Attractive Design, Easy To Install
August 10, 2014
Location:
San Jose, CA
Works Great!
Not sure about the mixed reviews, works great, no skipping even under heavy load. Pleasantly surprised by the wear despite rapidly going through XX1 cassettes on other bikes.

PROS: Lightweight, Attractive Design, Durable, Easy To Install
October 26, 2015
Location:
Whittier, Ca United States
Nice product!
I bought the eThirteen while searching for a large cog for the rear on my 1 x 10 setup. I found that most offerings required an 11-36 cog set from Shimano. This eTHirteen cog is intended for 11-34, and allowed me to have a large cog without having to buy a whole set. Great product.

PROS: Attractive Design, Lightweight, Easy To Install
June 16, 2015
Location:
San Luis Obispo CA

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Free Shipping Offer

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.