Weighs 71g in 40t version. Designed to work with 10 speed 11-34 Shimano cassettes. Also works just as well with 9 speed 11-34. Shift cutouts on 34t are in the same position on 9 and 10 speed cassettes, so this 40t cog works fine even with a 9 speed setup.
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More gear range, less gaps
This is basically the complete opposite of the current 1x movement (single chain ring up front).
e*thirteen bottom bracket tool
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Motorex racing fork oil 2.5Wt
This is what I use in damper on Rockshox rear shocks and in the damper on Rockshox forks for lightweight (<50kg) riders.
11-40t cassette options
Despite Shimano and SRAM refusing to make any sort of wide range 11-40t 10 speed cassette, there are a number of smaller manufacturers now offering solutions.
1 x 10 High Range Gearing Options
Update 2018: Garbaruk 10 speed wide range cassettes - complete cassettes made in the fashion of SRAM powerdome. Smaller cogs machined from steel block and large cog made of aluminium. These ...
eXotic carbon Ti seatpost
Carbon seatpost with alu reinforcing around the seatpost clamp, carbon cradle and Ti bolts.