SRAM

SX NX GX X01 XX1 XX AXS T-Type Apex Rival Force Red XPLR Brakes eBike Compatible

What SRAM Changed About Mountain Bikes

SRAM is credited with a run of things that are now simply how mountain bikes work: the 1x drivetrain, 12-speed Eagle gearing, direct-mount derailleurs, the DUB bottom bracket standard and wireless electronic shifting under the AXS name.

The tier structure is worth understanding before you buy. On the mountain bike side the ladder runs from GX upward, and on the road side from Rival through Force to Red. The core technology is shared across tiers, with the differences showing up in materials and weight rather than how the system behaves.

Mechanical, AXS and T-Type

Three families sit side by side. Mechanical Eagle drivetrains use a cable and are the simplest to live with and service. AXS replaces the cable with a wireless signal and a rechargeable battery on the derailleur, which removes cable friction entirely.

T-Type Transmission is the newer direct-mount approach, where the derailleur bolts through the rear axle rather than hanging off a hanger. Cassettes run to 10-52T on an XD driver for mountain bikes, with XDR drivers on the road and gravel side.

What We Stock From SRAM

The catalogue breaks down into four main areas:

  • MTB groupsets. Complete Eagle and AXS systems when you are replacing everything at once.
  • Cassettes. XG-1275, XG-1295 and road XG-1250 options across XD and XDR drivers.
  • MTB chains. Eagle 12-speed chains, Flattop road chains and Powerlink connecting links.
  • MTB brake systems. Code and Maven four-piston brakes, plus mounts, adaptors and mineral oil.

Bottom brackets, shifters, cables and small parts fill in around them.

Working Out Compatibility

Speed count and driver type are the two that stop a build. A 12-speed Eagle cassette needs an XD driver on the hub, and a 13-speed XPLR cassette needs XDR, so check the freehub body before ordering.

Many SRAM parts cross over with other brands, but AXS components talk to each other and are happiest kept within the one ecosystem. Note too that this collection carries road and gravel alongside mountain bike, so read the listing rather than assuming every cassette suits an MTB hub.

Shop SRAM at MTB Direct

Replacing a worn drivetrain as a set costs more up front and shifts better for longer than swapping one part at a time. If you are unsure which tier or speed count your bike runs, the compatibility details sit on each listing. Free delivery applies to orders over $99.