Tested SRAM G2 Ultimate Brake
Mountain Bike Rider|March 2020
SPECIFICATION Weight: 272g front, 294g rear, 121g rotor (180mm, not included) • Rotor size: 140/160/180/200/220mm • Contact: Sram.com
Danny Milner
Tested SRAM G2 Ultimate Brake

SRAM’s Guide has topped our trail brake charts for a few years in succession. Now there’s a new Guide in town, called the G2, and while it strongly resembles its predecessor, SRAM assures us that it is has been reworked from top to tail.

Let’s run down those changes starting at the caliper end. While it looks pretty similar to the old Guide, and shares the same pad shape and hose connections, the G2 unit is actually completely new. According to SRAM, the biggest advance is in terms of stiffness. The caliper is still a two-piece design that’s bolted together, but changes to the forging means it should resist flexing under extreme pressure better than the old caliper, with the aim of creating a firmer lever feel.

The pad gap has also increased thanks to some changes to the machining around the pistons, which helps achieve a drag-free setup, and the G2 is said to retain that gap as the pad wears, keeping lever feel more consistent. In this regard, credit must also go to the new phenolic pistons (a type of resin material) that glide in and out and resist heat so well that SRAM says it was able to ditch the previous steel heat sink.

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