SRAM launches its first direct mount rim brake

SRAM has announced the S-900, the first direct mount rim brake in its lineup.

Rather than attaching to a frame or fork via a single central bolt as is usually the case, a direct mount design attaches via two fittings, one for each arm (obviously, the frame/fork has to be manufactured specifically to take a direct mount brake).

“The synchroniser, which adjusts the pads for simultaneous engagement, is an offset design rather than centrally located,” says SRAM. “This location greatly reduces splay force, or energy that is dissipated into the frame/fork rather than the calliper. The result is superior modulation and great power, no sponginess, and a snappy return.”

We’ve not used it so we can’t comment on the performance. That inboard-facing quick release lever has a very Shimano-esque look to it.

The S-900 direct mount brake has clearance for 28mm tyres (you can get Shimano Dura-Ace, Ultegra and 105 direct mount brakes with clearance for 28mm tyres too) and SRAM says the pads are set wide enough to cope with modern rims.

The brakes feature SwissStop Flash Pro pads and are designed for fork and seatstay mounting only (so not underneath the chainstays). They’re compatible with all SRAM mechanical brake levers.

Previously, the SRAM-sponsored Katusha-Alpecin team had to use Shimano direct mount brakes on its Canyon Aeroad bikes, so this new product plugs that particular hole.

SRAM claims a weight of 326g for the pair (Shimano claims 310g for Dura-Ace, 344g for Ultegra, 350g for 105).

The S-900 direct mount rim brakes will be sold individually from March at a price of £116 each.

Get more details here.