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SRAM has purchased a number of companies, enabling it to offer a full set of componentry. At the forefront of the company is the SRAM marque which is used for most of its groupsets. Companies SRAM has purchased and converted into marque brands include Rockshox, Zipp, Avid, Truvativ, Quarq and TIME. [32]
Bicycle chains Roller chain and sprocket. A bicycle chain is a roller chain that transfers power from the pedals to the drive-wheel of a bicycle, thus propelling it.Most bicycle chains are made from plain carbon or alloy steel, but some are nickel-plated to prevent rust, or simply for aesthetics.
Hub gear: a gearbox mounted inside the hub, 3-speed is common, 5, 7 are available ("Sturmey-Archer"), Enviolo makes a CVT, and Rohloff makes a 14-speed hub. Cable operated by one or two cables; Indicator: a turn signal; Inner tube: a bladder that contains air to inflate a tire. Has a Schrader, "Woods"/"Dunlop" or Presta valve for inflation and ...
SRAM claims that standard makes their systems more robust: more resistant to the effects of contamination. [20] [21] Some SRAM shifters are made to be 2:1 Shimano-compatible, but these clearly will not work with SRAM's 1:1 derailleurs. [22] The Campagnolo convention. The shift ratios are 1.5 for modern units but their old units had 1.4 ratios. [23]
In 2015 SRAM announced its wireless electronic groupset called, SRAM RED eTap. The group was released in Spring of 2016 and is available on complete bikes and through aftermarket SRAM component dealers. [10] [11] A wireless system that can be retrofitted onto any bicycle was announced in 2016. [12]
The purpose is to prevent the chain coming off the chainring. It is largely effective at this. Narrow wide chainrings are now standard on premium mountain bikes which have one chainring and a wide cassette up to 50 teeth. A disadvantage is that they are not compatible with double or triple chainrings.
A SRAM GIGA-X-Pipe bottom bracket. Giga-X-Pipe was Truvativ's (later bought by SRAM in 2004) approach, and is an evolution of the ISIS Drive bottom bracket, but with a longer spindle and the bearings outside the bottom bracket shell. The spindle is permanently pressed into the right crank.
Nexus 4 Speed 4 184% 1st gear City Shimano Nexus Inter-3: 3 187% 2nd gear 1220 g City SRAM Spectro E12 (Elan) 1995 1999 12 339% 3500-4000 g City SRAM i-Motion 9: 2005 2012 9 340% 2000g (w/o brake)-2400g (with coaster brake) City SRAM G8: 2012 2015 8 260% 2088-2180 g [16] [17] City SRAM G9 2014 2015 9 292% 2088 g [17] City, Sport SRAM (Sachs)