Rival, Force or Red eTap AXS: with SRAM, choosing the right chain depends less on the groupset level than on the type of drivetrain—mechanical or electronic AXS. Unlike Shimano, where a standard HG chain remains compatible across most 10- and 11-speed road groupsets, SRAM introduced a proprietary chain design with AXS that changes the rules as soon as you move to 12 speeds. This guide explains which chain fits your groupset and highlights the key differences between SRAM and Shimano compatibility.
For general advice on choosing a road bike chain (weight, coatings, durability and maintenance), see our complete road bike chain guide.
1. The SRAM system: from conventional chains to Flattop AXS
On 10- and 11-speed mechanical drivetrains, SRAM chains (PC-1130, PC-1170) follow a standard width similar to Shimano's. Compatibility is determined primarily by the number of speeds rather than the brand itself. That's why an 11-speed SRAM chain can generally be used with an 11-speed Shimano cassette from the same generation without any issues.
The real change came with AXS, SRAM's 12-speed wireless electronic groupset. It introduced the Flattop chain, featuring a flattened upper profile that makes the chain wider, stronger and more durable than conventional designs. This technology is exclusive to SRAM: a Flattop chain is designed only for use with an AXS cassette and derailleur, while a Shimano HG+ 12-speed chain is not compatible with an AXS drivetrain.
Key takeaway: for 10- and 11-speed drivetrains, compatibility between brands remains fairly flexible. With 12-speed SRAM AXS, however, the Flattop chain creates its own ecosystem, including the chain, cassette and freehub body.
2. Which SRAM chain for which groupset?
SRAM's three road groupset families—Rival, Force and Red—are available in both mechanical and AXS electronic versions, each requiring a specific chain.
| Groupset | Version | Chain reference | Main feature |
|---|---|---|---|
| Rival | 11-speed Mechanical / 12-speed AXS | PC-1130 (11-speed), Rival Flattop (12-speed AXS) | Durable entry-level option with excellent value |
| Force | 11-speed Mechanical / 12-speed AXS | PC-1170 (11-speed), Force Flattop AXS (12-speed) | Enhanced wear-resistant finish, upper mid-range |
| Red | 12-speed eTap AXS | Red Flattop AXS | DLC-coated links, lightweight construction, race-level performance |
Always check whether your groupset is mechanical or AXS before ordering. A Flattop chain cannot replace a standard 11-speed chain, and vice versa.
SRAM Rival chain
SRAM's entry-level road groupset is available in both 11-speed mechanical and 12-speed Rival eTap AXS versions. The PC-1130 remains the versatile choice for mechanical drivetrains, while the AXS version requires the dedicated Rival Flattop chain. It shares the same construction as higher-end Flattop chains but uses a simpler surface finish.
SRAM Force chain
The mid-range option, highly regarded for its performance-to-price ratio. In the 11-speed mechanical version, the PC-1170 benefits from a more advanced wear-resistant treatment than the Rival chain. The 12-speed Force Flattop AXS chain uses the same Flattop design as the Red version but with a slightly less premium finish.
SRAM Red eTap AXS chain
SRAM's flagship chain features the Flattop design with DLC-coated rollers to reduce friction and weight. It is the benchmark choice for high-end AXS groupsets. Although it is fully compatible with Force and Rival AXS drivetrains, the performance gains over a Force Flattop chain are relatively small unless you are already riding a complete Red eTap AXS groupset.
3. XD/XDR freehub bodies: the real SRAM compatibility requirement
More than the chain itself, the freehub body determines whether a SRAM cassette can be installed on your wheel. SRAM uses its own standards: XD for mountain bike and gravel drivetrains, and XDR, the slightly longer road version. A 12-speed SRAM AXS road cassette therefore requires an XDR freehub body. A wheel equipped with a standard Shimano HG freehub cannot accept it unless the freehub body can be replaced.
Older 11-speed mechanical SRAM road drivetrains generally use the same HG freehub standard as Shimano. The XDR requirement only becomes relevant when upgrading to a 12-speed AXS drivetrain.
Before purchasing a 12-speed AXS cassette: make sure your wheels are fitted with an XDR freehub body, or that an XDR conversion is available. This is the most common compatibility issue when upgrading an existing bike to SRAM AXS.
4. SRAM vs Shimano: what really changes?
This comparison inevitably comes up when choosing a new bike or upgrading a drivetrain. When it comes to chains, SRAM and Shimano follow a very similar compatibility logic up to 11 speeds, but their systems diverge significantly with the arrival of 12-speed drivetrains.
| Level | SRAM | Shimano |
|---|---|---|
| Entry-level | Rival | 105 |
| Mid-range | Force | Ultegra |
| High-end | Red eTap AXS | Dura-Ace |
At 12 speeds, SRAM's Flattop chain and Shimano's HG+ chain are not interchangeable. The same applies to their respective freehub standards: SRAM uses XDR, while Shimano relies on HG or Micro Spline depending on the drivetrain. We cover these compatibility topics in greater detail—including the Hyperglide standard, upgrading from 10 to 11 speeds, and mixing components from different brands—in our dedicated Shimano road bike chain guide, which is the best place to start if you're riding a Shimano groupset rather than SRAM.