What’s the difference between SRAM road groupsets?

Like its main competitors Shimano and Campagnolo, SRAM has a hierarchy of groupsets with levels offering different weights, number of gears and – of course – prices!

Whilst Shimano and Campagnolo have been producing bike components since the 1920s and 30s, SRAM was only founded in 1987. However, although much younder it has become know for pioneering innovations such as 1x road drivetrains, wide-range cassettes, and wireless shifting.

I will try to keep this groupset list current, please give me a shout if I mess up!

	Weight(g)	Brakes	Rear sprockets*	Chainrings	Low sprocket max teeth**	Electronic
RED eTap HRD	2361	Disc	11	2	32	Y
RED eTap	1750	Rim	11	2	32	Y
RED 22 HRD	2119	Disc	11	2	32	N
RED 22	1741	Rim	11	2	32	N
Force 1	2466	Disc	11	1	42	N
Force HRD		Disc	11	2	32	N
Force 22	2097	Rim	11	2	32	N
Rival 1	2690	Disc	11	1	42	N
Rival HRD		Disc	11	2	32	N
Rival 22	2348	Rim	11	2	32	N
Apex 1	2719	Disc	11	1	42	N
Apex HRD		Disc	10	2	32	N
Apex	2419	Rim	10	2	32	N

* the more spockets, the smaller the jump between adjacent gears.
** the more teeth, the easier the bottom gear will be.