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Peter Towle

chainring upgrade for fat x 7

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You will need a complete crankset replacement.  The stock cranks do not support chainring swaps.

You will need a crank puller. 

You will also need to replace the chain as you need one more link for every tooth you add to the front ring on your new crankarms.  KMC chains seem to be the hands down favorite for durability and value these days.

Most folks go to Amazon for a replacement crankset.  Probably your best bet is to find a fixie crankset as they seem to be the only ones designed for a single front chainring, then swap in the 3/32-compatible chainring of your choice.

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Peter, I like Origin8 components because of the quality by a company that specializes in Fat Bike Components and some of our other Sondors upgrade owners spec their products on their Projects. This will help you find sku #s  for quality square taper crank arm sets, of your desired arm length (sorry, I can’t recomend a current source) and I would suggest this Origin8, 53 tooth chain ring to get you cranking up to the bikes capabilities. 

http://www.origin8.bike/product-description/?prod_model_uid=1006

91869F86-B05F-47E3-B33A-ACD8D4A1E0F1.thumb.jpeg.fb6328e0e813858a815c03ff482d04bf.jpeg

https://www.ebay.com/i/273187000407?chn=ps&ul_ref=https%3A%2F%2Frover.ebay.com%2Frover%2F1%2F711-117182-37290-0%2F2%3Fmpre%3Dhttps%253A%252F%252Fwww.ebay.com%252Fi%252F273187000407%253Fchn%253Dps%26itemid%3D273187000407%26targetid%3D414074608061%26device%3Dt%26adtype%3Dpla%26googleloc%3D9027286%26poi%3D%26campaignid%3D1058340630%26adgroupid%3D49477804222%26rlsatarget%3Dpla-414074608061%26abcId%3D1133876%26merchantid%3D6303054%26gclid%3DEAIaIQobChMI_7LQwIG-2wIVC77ACh0QJwI1EAQYAyABEgJiLPD_BwE%26srcrot%3D711-117182-37290-0%26rvr_id%3D1555260276373%26rvr_ts%3Dd2f7f63c1630ab66a6534477fff7cc44

 

67648F63-7024-4656-8ECE-01DA10ABF1D0.thumb.jpeg.dff907e2cabf01f6f1e6731b7908d63d.jpegI use the KMC X8.99 nickel plated silver chains. Bright chains are easier to keep clean because you can see the road grit and dirt they collect and the nickel plating makes for a better inner and outer plate interaction and extra durability. 

B99C5C7C-F261-4932-AE20-73208FDEB5CE.jpeg.ec113f05e9388410cc929ecf5a984e38.jpeg

https://www.walmart.com/ip/X8-99-116L-Silver/41866503?wmlspartner=wlpa&selectedSellerId=16878&adid=22222222227029465941&wl0=&wl1=g&wl2=t&wl3=62926696689&wl4=pla-99461510889&wl5=9027286&wl6=&wl7=&wl8=&wl9=pla&wl10=120816853&wl11=online&wl12=41866503&wl13=&veh=sem

 

image.jpeg.460181aebee7ca43d0f0c2b7c7188c24.jpeg

     Reddy

 

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Did you do the upgrade?  What is the size of chainring you ended up using?  Any limitation on the maximum size without hitting the chainstay?

I went out with my son for a ride today, and his borrowed (sister's) Fold X7 was not able to keep up with my 20" wheel mid-drive home build.  He claimed he couldn't pedal faster.  Surely enough, when I swapped my bike with his, I was only able to hit about 20 MPH top speed in 7th gear without using crazy cadence.  I counted the teeth, and the Fold X7  chainring comes with 44 teeth.  Come to think of it, 20 MPH is fine, but I just want to slow down the cadence.  I can't remember this for a fact, but I thought I was able to hit 26 MPH with throttle only when we first got the bike.

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On 6/5/2018 at 11:40 PM, Reddy Kilowatt said:

Peter, I like Origin8 components because of the quality by a company that specializes in Fat Bike Components and some of our other Sondors upgrade owners spec their products on their Projects. This will help you find sku #s  for quality square taper crank arm sets, of your desired arm length (sorry, I can’t recomend a current source) and I would suggest this Origin8, 53 tooth chain ring to get you cranking up to the bikes capabilities. 

http://www.origin8.bike/product-description/?prod_model_uid=1006

91869F86-B05F-47E3-B33A-ACD8D4A1E0F1.thumb.jpeg.fb6328e0e813858a815c03ff482d04bf.jpeg

https://www.ebay.com/i/273187000407?chn=ps&ul_ref=https%3A%2F%2Frover.ebay.com%2Frover%2F1%2F711-117182-37290-0%2F2%3Fmpre%3Dhttps%253A%252F%252Fwww.ebay.com%252Fi%252F273187000407%253Fchn%253Dps%26itemid%3D273187000407%26targetid%3D414074608061%26device%3Dt%26adtype%3Dpla%26googleloc%3D9027286%26poi%3D%26campaignid%3D1058340630%26adgroupid%3D49477804222%26rlsatarget%3Dpla-414074608061%26abcId%3D1133876%26merchantid%3D6303054%26gclid%3DEAIaIQobChMI_7LQwIG-2wIVC77ACh0QJwI1EAQYAyABEgJiLPD_BwE%26srcrot%3D711-117182-37290-0%26rvr_id%3D1555260276373%26rvr_ts%3Dd2f7f63c1630ab66a6534477fff7cc44

 

67648F63-7024-4656-8ECE-01DA10ABF1D0.thumb.jpeg.dff907e2cabf01f6f1e6731b7908d63d.jpegI use the KMC X8.99 nickel plated silver chains. Bright chains are easier to keep clean because you can see the road grit and dirt they collect and the nickel plating makes for a better inner and outer plate interaction and extra durability. 

B99C5C7C-F261-4932-AE20-73208FDEB5CE.jpeg.ec113f05e9388410cc929ecf5a984e38.jpeg

https://www.walmart.com/ip/X8-99-116L-Silver/41866503?wmlspartner=wlpa&selectedSellerId=16878&adid=22222222227029465941&wl0=&wl1=g&wl2=t&wl3=62926696689&wl4=pla-99461510889&wl5=9027286&wl6=&wl7=&wl8=&wl9=pla&wl10=120816853&wl11=online&wl12=41866503&wl13=&veh=sem

 

image.jpeg.460181aebee7ca43d0f0c2b7c7188c24.jpeg

     Reddy

 

 

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Thanks for the great question SHOCKER,i have replaced two front chainrings on my FAT X7's with 52 tooth's from an outfit called PLAYBOY at ALI EXPRESS the bike is darn near perfect to my liking-any faster would be too risky for me,i can pedal all afternoon at 20mph now! Good luck with the chainring update on your Fold X7.Its worth it.

Edited by Peter Towle
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