SRAM XX disc brake review

Fully adjustable trail stopper

Our rating 
3.5 out of 5 star rating 3.5
GBP £300.00 RRP | USD $373.00

Our review

Crazy expensive, but outstandingly progressive power in a fully adjustable, superlight system
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The most expensive mountain bike brake you can buy, SRAM’s new XX delivers outstanding control and a meaty power-to-weight ratio for those who can afford it.


This evolution of the Avid Elixir Mag CR uses a two-piece cast magnesium calliper plus titanium hardware all round and an alloy centre floating rotor to minimise weight.

The flip-flop design can cope with left-hand front brakers and the unique two-piece clamp syncs with XX shifters and fork lockout levers.

Initial power isn’t outstanding but both dyno and trail experience shows it builds with a perfectly linear progression to out-brake all but the biggest downhill models.


There’s a bit of flex from the magnesium lever, but still loads of fine control through the bite point-adjustable carbon lever. The organic pads take longer to bed in than standard sintered pads though, and SRAM state that it’s “not for lift accessed, downhill or aggressive all-mountain use”. We’ve only run it for a couple of months so far but have had no issues yet.

SRAM xx dry: sram xx dry
Katie Heron
Dry all: dry all
Katie Heron
SRAM xx wet: sram xx wet
Katie Heron
Wet all: wet all
Katie Heron

Product Specifications


Name XX Brake (10)
Brand SRAM

Features Combination mount option, 185mm tested, Titanium TORX® T25 bolts
Weight (g) 345
Material Carbon Fibre
Brake Fluid DOT5.1
Brake Body Material Magnesium Alloy
Brake Rotor Diameters 140mm 160mm 185mm 200mm