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Surly - Parts: Surly Dingle Cog 3/32" 17/21t

 

Dingle Sprocket


Fixed dual cassette sprocket.

Having two sprockets on the back means you have more options for gear changes when the conditions demand it. Say you want to ride your off-road fixie from your house to the trailhead, but your gear combo is either too high for the dirt or too low for the road. With a 17/19t Dingle on the back, pick two chainrings that are 2 teeth apart, like a 44t and a 42t. When you change from the outer (44:17t) gear combo to the inner (42:19t), you'll have a much better off-road gear and your wheel position will not change. This maintains effective chainstay length so you won't have to worry about having too much or too little chain length to accommodate the gear change. Made from machined, heattreated and chrome plated SCM415 CroMoly steel. Available in 3/32" (narrow chain) tooth width 17/19t, 17/20t or 17/21t combinations. We recommend using 9-speed chains only. You can thread it onto any standard ISO threaded (1.375x24tpi) fixed gear hub and it takes up the same 7.4mm threads as a standard fixie cog. We recommend using a wider lockring (like our improved track lockring) to assure you can get a lockring tool onto it.

Cog sizes;
17/18T.
17/20T
17/21T

Note: General Fixed sprocket check:
for correct fixed use, the fixed sprocket should NEVER move on the hub when pedal force is applied in both directions.
i.e. if the sprocket moves, then something is wrong.
Continued use with a fixed sprocket that moves will result in damage to the hub.


Free shipping on all website orders over £25 to UK mainland.


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  Product Description Colour  Size  Wt(g)  StockNo  Price 
Per 
  Dispatched in:

  Dingle Cog, Twin Track Cog, CNC Cro-Mo to fit 3/32" Chain
WAS £54.99 - NOW £19.99!
 
Silver  17/19T    FCQBD719  Now: £19.99    EACH  BUY

 add to wishlist

In Stock

  Dingle Cog, Twin Track Cog, CNC Cro-Mo to fit 3/32" Chain
WAS £54.99 - NOW £39.99!
 
Silver  17/21T    FCQBD721  Now: £39.99    EACH  BUY

 add to wishlist

In Stock