🔧 2021 Suzuki GSX-R1000 Brake Fluid Flush

Overview

The 2021 Suzuki GSX-R1000 requires brake fluid flush every 2 years regardless of mileage (dot fluid absorbs moisture). Regular brake fluid maintenance extends engine life and maintains peak performance. This guide covers the complete procedure for both DIY mechanics and those seeking shop estimates.

Tools Needed

Supplies Needed

Step-by-Step Procedure

1. 1
   Locate all brake fluid reservoirs (front master cylinder, rear master cylinder).
2. 2
   Remove the reservoir cap and use a turkey baster to remove as much old fluid as possible.
3. 3
   Fill reservoir with fresh DOT 4 fluid to the max line.
4. 4
   Attach clear vinyl tubing to the bleeder screw on the brake caliper. Place the other end in a collection bottle.
5. 5
   Open the bleeder screw 1/2 turn. Pump the brake lever/pedal slowly 3–4 times, holding on the last pump.
6. 6
   Close the bleeder screw before releasing the lever. Repeat until fluid runs clear with no bubbles.
7. 7
   Keep the reservoir topped up throughout — never let it run dry.
8. 8
   Bleed the rear caliper using the same process.
9. 9
   Refill both reservoirs to the max line and replace reservoir caps.
10. 10
    Test brake feel: firm pressure = good. Spongy feel = more bleeding needed.