Hand made in Japan by Runwell Tools, the COG1218L is for those who appreciate great quality tools and beautiful design. A chainless chain whip to remove cogs ranging from 12 to 18 teeth, and lock rings.

The COG1218 is the ultimate replacement for a chain whip. No moving parts, 100% reliable and will last a lifetime. Never fear damaging your carbon wheels by slipping chain whips ever again.

The two ends of the tool are different sizes to perfectly mesh with sprockets between 12-15 tooth sprockets on one end, and 16-18 tooth sprockets on the other. It is not compatible with our 9-11 tooth sprocket range.

This upgraded COG1218L features a integrated lock ring hook on the 12-15 tooth side of the tool. The outer lock ring plate is replaceable if damaged over time.

Specifications:

  • Fits 12-18 tooth sprockets
  • Compatible with 1/8", 3/32" or 11/128" sprocket widths
  • Integrated lock ring hook
  • 330mm long
  • 355g

Note: Recommended to not use the tool on 12-15 tooth sprockets made of aluminium or carbon. The tool may deform the softer material when in use.

Runwell cog and sprocket fixed gear removal tool

Customers praised this cog removal tool as "so much easier than the old chain whips" with exceptional build quality. Described as "a piece of art" and "perfectly machined," it eliminates chain breaking worries. Shoppers love its ease of use for sprocket work, noting it "doesn't flex one bit" under power. Fast shipping and quality exceeded expectations.

  • 5 stars: 16 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
L
Leo P.

So much easier than the old chain whips, love it and highly recommend it

s
santiago f.
A Beauty!

Such a piece of art as well as a great tool!

C
Christoph M.
When tools are pieces of art

Wonderful tool, perfectly machined and great to use. Also a lot easier to work on sprockets than with a chain whip.

R
Rory F.
no chain, no worries

super easy to use, not as heavy as you would expect, arrived super quick!

R
Ross D.
Chainless Cog Remover

How awesome is this tool
No need to worry about chain breaking while removing cogs

E
Elise
So easy to use

A newer track rider, wanting a tool that is easy to use and also high quality was key. This tool delivers the goods!

G
Gary M.
Chainless whip

Amazing product and so easy to use

T
Troy M.
Runwell COG12-18L

Top quality tool, much better than mucking around with a chain whip.

N
Nick S.
The best tool ever!

After struggling with chain whips for years, I finally broke down and bought this cog tool. Works great! Couldn’t be happier with it!

J
Jorge M.N.V.

It's incredible and very useful. I recommend it

A
Antony W.
Fantastic bit of kit!

1st class service from Brooks cycles, as normal, ordered Sunday arrived Wednesday.
The pictures online don’t do this tool justice! I.M.O this tool is engineered and finished to a standard way above all other chain whips. Despite always applying grease and just nipping up sprockets, I have been nervously undoing sprockets since snapping a park tool chain whip.1600 watt’s of power driving the sprocket firmly home and this tool doesn’t flex one bit.
Please make one to fit a19t sprocket used for Grass Track racing.
Best tool purchase since my T.A. Peanut butter spanner 40 years ago.

M
Merrick C.
Great tool

A very handy tool that works perfectly with exceptional design and amazing product quality.

T
Tyler L.
Works Perfectly

It is really nice to use this for the lockring and the sprocket

n
nigel N.H.
The best ‘Whip’

This is my new favourite tool and my second favourite whip behind Stewies ‘whip’ gag on family guy…

Both get the job done and both are superbly crafted

B
Brendan B.
Best tool I’ve bought

The run well cog tool is the best thing I’ve bought, this is for my daughter to make her sprint life easier changing gears which it already has and the fact that the guys from Velobike get it to you so quickly is the reason why we keep going back for more.
Keep doing what you’re doing guys.

J
James
I love this thing

This tool is fantastic. So much better than the old chainwhip tool. I wrapped one end with white tape to make it instantly clear which end is for larger cogs.

h
han

Is it possible to use it for Enduo™ Track Sprocket

Velobike

Sure can 🙂

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