SRAM just released details of their 2011 X7 10-speed mountain bike group — yes, it’s a whole group — which is aimed squarely at mid-level cross-country and entry-level downhillers, but looks downright desirable to any mountain rider on a budget.
Rear derailleur: In a departure from the single cage length of the 10-speed XX derailleur, X7 offers three choices: Long, medium and short. The mech operates via SRAM’s Exact Actuation cable pull ratio. It has a 3K-carbon pulley cage and the ability to accommodate a 36-tooth cassette. The long cage derailleur has a claimed weight of 239 grams.
10-speed shifters: SRAM combines an Exact Actuation 10-speed rear shifter with a dedicated two-speed front shifter, for a streamlined 2x10 shifting system. The new X7 shifters have a removable clamp that’s MatchMaker compatible and feature a new cable change access point on the topside of the shifters. The shifters are also available in a 9-speed version that accommodates a triple crankset. The 10-speed shifter set has a claimed weight of 232g.
S1400 2x10 crankset: The 7075 alloy OCT hollow forged crankarms use the same 64mm/104mm bolt pattern design and timed, 1:1.5 small to large chainring ratio to recreate the fast shifting of the XX group’s X-Glide design. The XR GXP bottom bracket has a new ‘Gutter Seal’ design, which is claimed to reduce seal drag and increase resistance to bearing contamination. Like XX, the S1400 chainrings come in 42/28-tooth or 39/26-tooth combinations. The arms are available in 170mm and 175mm lengths. The 175mm crankset weighs a claimed 871g with the XR GXP bottom bracket.
PG-1050 PowerGlide 10-speed cassette: The PG-1050 features a semi-spidered construction, heat-treated steel cogs and lock ring. It’s available in 11-32- and 12-36-tooth ratios. Weight is claimed at 302g for the 11-32-tooth model. This will cassette undoubtedly be as useful to XX owners, for their training wheels, as it is an integral part of the new X7 component group.
Elixir R brakes: The Elixir R Taper Bore brakes feature new, larger pistons and top loading pads, as well as the new storm grey finish to match the X7 group. Rotor options are 160mm, 185mm and 203mm. Avid also offers a carbon lever blade option, which knocks 10g off the 160mm rotor option’s claimed 375g weight.
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