If you're a cyclist, then you know that SRAM and Shimano are two of the biggest names in the bike world. But what you might not know is that their bleed kits are not interchangeable. Here's a look at why that is and what it means for you.
First, a bit of background: SRAM and Shimano use different designs for their hydraulic brakes. SRAM uses what's called a "closed system" while Shimano uses an "open system." In a closed system, all of the brake fluid is sealed inside the brake lines and calipers. This makes it very difficult (if not impossible) to bleed the brakes yourself. You need special tools and knowledge to do it right, which is why most cyclists leave it to their local bike shop or qualified mechanic.
In an open system like Shimano's, on the other hand, there is an exposed reservoir where you can easily add or remove fluid as needed. This makes bleeding your own brakes much simpler and something that even relatively inexperienced cyclists can do at home with just a few basic tools.
So, when it comes to SRAM vs Shimano bleed kits, there's really no comparison - they're two totally different products designed for two different types of brakes. If you have SRAM brakes, make sure to get a SRAM-specific bleed kit (and vice versa for Shimano). Trying to use one brand's kit on another brand's brakes will likely just cause frustration and may even damage your brakes!