SRAM Road, Gravel and MTB Transmissions Guide

Published on 26 September 2024

Faced with the diversity of options that SRAM offers in terms of transmissions for road, gravel and mountain bikes, how do you find your way and choose the one that suits you best? Remember, the transmission is the crankset, chain, derailleurs, and cassette that allows you to change gears to adapt to different terrains and riding conditions. With several groups like Red, Force, Rival, or Apex for road or gravel, but also SX, NX, or XX1 Eagle for mountain biking, it is very easy to get lost. To help you better understand the entire range and make the right choice, discover in our article the complete guide to SRAM transmissions for road, gravel, and mountain biking classified by price and use. This will allow you to better understand why some bikes are more expensive than others and especially to make the right choice.

SRAM Transmission Groups for Road and Gravel

Let’s get right into the heart of the matter. SRAM for road and gravel is classified into 4 categories:

• The Apex, only available in 1x configuration, is frequently chosen for entry-level gravel bikes;
• The Rival is perfect for cyclists looking for good value for money;
• The Force group is aimed at enthusiasts seeking high-level performance;
• Finally, the RED group is SRAM's flagship model, used by professional riders both on the road and gravel.

But let’s delve a little deeper into each transmission...

SRAM APEX

Entry-level means affordable price! The SRAM Apex, a mechanical transmission for road and gravel, is appreciated by beginners and recreational cyclists for its versatility. This group is offered in a single chainring 1 x 12-speed configuration with a wide-range cassette (up to 10-52), allowing it to adapt to all types of terrain. Its simplicity makes it an ideal choice for all enthusiasts.

This group offers remarkable performance for its level. It is precise and durable and will meet the needs of newcomers to cycling.

SRAM Gravel Groups vs SHIMANO: which one to choose?

SRAM Apex AXS

The SRAM Apex AXS in a single chainring 12-speed configuration is the most affordable electronic transmission in the range. Its value for money will not disappoint beginners on the road or gravel enthusiasts. The two shifters communicate with the rear derailleur via a wireless system. The benefits? Easier gear shifting, reliability, and less maintenance. Available only with disc braking, the SRAM Apex AXS is always highly appreciated.

SRAM Rival eTap AXS

The award for best value for money goes to SRAM Rival eTap AXS. This mid-range group allows sporty cyclists to enjoy themselves without breaking the bank. Its notable difference from higher-end groups lies mainly in the weight of the components. The rear derailleur, for instance, is 59g heavier than that of the Force AXS D2.

The SRAM Rival, like its little brother Apex, is available in double and single chainring versions. However, it offers 12 speeds at the rear and is distinguished by more advanced technology and a reduced weight compared to the entry-level group. The SRAM Rival directly competes with the Campagnolo Centaur and Shimano 105. Like these groups, it is reliable, precise, and capable of covering many miles effectively.

SRAM Force AXS D2

With the SRAM Force AXS D2, we enter the high-end market. It is indeed the heir to the advanced technologies of the Red AXS. Comparable to the Campagnolo Chorus and Shimano Ultegra Di2, the SRAM Force is an exceptional group, lightweight and reliable, but it comes at a cost. It is therefore aimed at competition-oriented cyclists.

Available only with hydraulic disc braking, the Force AXS D2 is a lightweight and high-performance electronic transmission, weighing approximately 2820g for the 2x12 version without a power meter.

Its main asset lies in the versatility of its rear derailleur. In double or single chainring configuration, the SRAM Force AXS D2 adapts to your needs.

SRAM Red XPLR AXS

The RED XPLR AXS group has been significantly updated in 2024, moving to 13 speeds. This new version, exclusively dedicated to gravel, includes redesigned shifters and brakes, a “Full Mount” rear derailleur for increased stiffness and precision, as well as a new cassette, offering a noticeable improvement in terms of performance and compatibility with modern frames.

SRAM Red AXS

With its 350g less than the Force and 500g less than the Rival, the Red is at the top of the SRAM range, equipping the bikes of professional riders from the world's top teams. Updated in 2024, SRAM is launching a new version of its high-end transmission.

The ergonomics of the shifters have been meticulously developed to offer optimal gear shifting, while hydraulic disc braking ensures exceptional power and precision. Designed for the most demanding competitors, this group justifies its high price with unmatched performance and cutting-edge mechanics.

SRAM Road Groups vs Shimano: which one to choose?

To summarize:

SRAM MTB Drivetrain Groups

SRAM offers no less than 10 MTB drivetrain groups, all in 1x12 speeds, with varying performance levels and prices according to your level and budget, incorporating some exclusive technologies.

SRAM Eagle Generation

Now, SRAM offers two generations of MTB drivetrain groups: the old Eagle generation and the new Transmission series, freshly arrived in 2023. Be careful not to confuse them; the components are not all compatible 😉

SRAM SX Eagle

The SRAM SX Eagle is SRAM's entry-level group, easily accessible for all beginners and leisure riders.

SRAM NX Eagle

The SRAM NX Eagle is a reliable and accessible drivetrain. It features an 11-50t cassette compatible with Shimano HG freehubs (9, 10, or 11 speeds) and a 32-tooth aluminium crankset.

SRAM GX Eagle (AXS)

The mechanical version and the first in the series to offer an electronic version, it remains very affordable for sporty cyclists who want to treat themselves. It provides precise and reliable gear shifting, adjustable via the SRAM AXS app. With its 10-52 cassette, it covers a wide range of gears. The aluminium crankset and customisable design have made this group a favourite among riders.

SRAM X01 Eagle (AXS)

Weighing just a few grams more, the X01 is virtually identical to the XX1 group, so if weight isn't a concern and you are a trail and enduro cyclist, this group will suit you perfectly. It offers precise and reliable gear changes, whether in mechanical or electronic form. The 10-50 cassette provides excellent versatility, and the Cage Lock technology on the derailleur simplifies maintenance and wheel installation.

SRAM XX1 Eagle (AXS)

The SRAM XX1 Eagle group is designed for mountain bikers seeking maximum lightweight performance oriented towards cross-country. Mainly made of carbon and aluminium, it weighs 32 grams less than the X01. Although its durability is slightly lower, it compensates with faster gear changes.

New Generation SRAM Transmission (T-Type)

The drivetrain groups in this new series stand out with their rear derailleur “Full Mount,” which requires a UDH compatible frame. Unlike traditional systems with a derailleur hanger, this one mounts directly to the frame, improving rigidity, durability, and the precision of gear changes.

GX

A less exposed battery, unparalleled precision, robustness, and tool-free installation, this new GX transmission is ideal for budget-conscious users.

XO

Many replaceable parts can be swapped for lighter XX or XX SL versions to save weight. It is ideal for enthusiasts.

XX

You guessed it, XX is lighter than X0, which is lighter than GX. Like its big brother XX SL, it is a flagship group used by pro mountain bikers.

XX SL

A lighter option intended for cross-country racing, the XX SL Eagle transmission features a carbon pulley cage and replaceable parts to extend its durability.

MTB Groups SRAM vs Shimano: which one to choose?

To summarize this guide on SRAM road, gravel, and mountain bike transmissions, the main advantage of a high-end group lies in its reduced weight and additional features. Otherwise, the differences often concern appearance, ergonomics, resale value (high-end groups retain their value better), and prestige. However, for most passionate, experienced, or amateur cyclists, a mid-range group, such as SRAM Force, Rival, or GX, is generally sufficient and meets their needs without requiring a more sophisticated model.

So, which one will it be: SRAM, Shimano, or Campagnolo?