How to Change Brake Pads on a 2013 Beta 400 RS

Shop parts for a 2013 Beta 400 RS Dirt Bike.

Brake system overview

The 2013 Beta 400 RS uses a modern hydraulic disc brake system common to enduro and trail bikes: a lever (front) or pedal (rear) actuates a master cylinder, which sends hydraulic pressure through a brake line to a caliper. The caliper squeezes brake pads against a steel rotor to slow the wheel. Key parts you'll touch during pad service are the brake lever/pedal, master cylinder, brake line, caliper, brake pads, pad retaining pin/clip, and the rotor.

When to replace pads & why it matters

  • Reduced braking power or longer stopping distances.
  • Squealing, grinding, or metallic noises when braking.
  • Excessive lever or pedal travel before bite.
  • Visible pad material worn thin (plate to backing plate gap <2-3 mm is a common visual cue).
  • Heat discoloration or scoring on the rotor surface.

On a 400cc enduro bike like the 2013 Beta 400 RS, reliable brakes are critical for technical sections, downhill control, and avoiding surprises on mixed-terrain rides. Check pads after muddy or long, hard braking sessions.

Tools & prep

  • Basic wrench set or socket set for axle and caliper bolts
  • Flat and Phillips screwdrivers
  • Pliers for retaining clips and pins
  • Small punch or drift to tap pins if needed
  • Clean shop rags and isopropyl alcohol for cleaning rotors and calipers
  • Brake grease for pad backing/contact points (use sparingly)
  • Sturdy bike stand to support the 2013 Beta 400 RS with the wheel off the ground

Step-by-step — changing the brake pads

  1. Prepare the bike and workspace: Park the 2013 Beta 400 RS on a level surface and support it with a center or rear stand so the wheel is off the ground. Clean heavy mud from around the caliper area so you can work without debris falling in.
  2. Decide if the wheel needs to come off: On many Beta calipers the pads can be removed with the wheel in place, but removing the wheel gives better access and lets you inspect the rotor and wheel bearings. If removing the wheel, loosen axle hardware, remove axle, slide wheel out, then set it aside.
  3. Remove retaining pin/clip: Locate the pad retaining pin and clip on the caliper. Use pliers or a screwdriver to remove the retaining clip, then slide or tap out the pad pin. Keep hardware safe for reuse unless replacing it.
  4. Slide old pads out: With the pin removed the pads should slide free. If stuck, gently pry with a flat screwdriver while supporting the caliper to avoid forcing pistons outward abruptly.
  5. Inspect caliper and rotor: Look for deep grooves, scoring, or discoloration on the rotor. Check the caliper bore area for leaks, dirt, or corrosion. Clean rotor contact surfaces with isopropyl alcohol and a clean cloth.
  6. Compress caliper piston(s): Before fitting new, thicker pads, push the piston(s) back into the caliper body. Use a clean flat block or a piston tool and apply even pressure. Do this slowly to avoid pushing fluid back into the master cylinder too quickly; cap or monitor the master cylinder reservoir if accessible to avoid overflow.
  7. Install new pads: Slide new pads into the caliper so friction material faces the rotor. Apply a thin smear of brake-specific grease only to the pad backing where it contacts slides or the retaining pin – do not get grease on the friction surface or rotor.
  8. Reinstall pin & clip: Insert the retaining pin and secure the clip. Confirm the pads are seated and the pin is fully engaged. Wiggle the pads by hand to ensure they move slightly on their guides and are held by the hardware.
  9. Reinstall wheel (if removed): Place the wheel back into the forks or swingarm, reinstall axle, torque axle hardware to spec (hand-tight plus firm final torque with a wrench), and ensure the wheel spins freely without rubbing. Check caliper alignment over the rotor.
  10. Restore hydraulic pressure: Pump the brake lever or pedal several times to bring pad faces to the rotor and restore firm lever feel. For rear brakes, operate the pedal similarly. Expect initial sponginess until the pads seat.
  11. Final checks: Confirm retaining clip is secure, no fluid leaks, and the lever/pedal feel is firm. Take a slow test ride and perform bedding-in stops before full-speed use.

Helpful inspection tips while you're in there

  • Rotor thickness & condition – look for deep scoring, warping, or blue heat spots. Replace rotor if badly damaged.
  • Check for brake fluid leaks around the caliper piston seals or hose fittings; any seepage indicates service is needed.
  • Ensure caliper slides or guide pins are free & lightly lubricated so the caliper can center on the rotor.
  • Clean out mud, packed sand, and grit from the caliper bracket and around the pads & pins to prevent premature wear.
  • Make sure pad retaining hardware is straight and not bent; replace any damaged pins or clips.

Bedding in new pads

New pads need to mate to the rotor surface for best performance. On the 2013 Beta 400 RS, perform a bedding procedure of about 8-12 controlled stops: accelerate to a moderate speed on a safe stretch, then apply firm but not emergency braking to reduce speed noticeably without locking the wheel. Allow brakes to cool briefly between repeated stops. Avoid hard emergency stops for the first few miles to let the pad transfer a uniform layer to the rotor.

Notes on variations and model details

Most modern dirt bikes, including the 2013 Beta 400 RS, use hydraulic disc brakes and similar pad retention systems. Depending on caliper design you may have one or two pistons per caliper; piston count affects how easily the pads are compressed and how even the wear is. If your bike has an aftermarket rotor size or different caliper, hardware and pad shape can vary but the service steps remain the same.

Wrap-up

Changing brake pads on the 2013 Beta 400 RS is straightforward with basic hand tools and a clean workspace. Regular inspection after muddy rides or long trail sessions keeps braking consistent and safe. After installation and bedding, you'll have confident stopping power for technical trails, enduro sections, and everyday riding.

Related Shopping Categories

Shop Brake Pads for a 2013 Beta 400 RS Dirt Bike.

Shop Brake Rotors for a 2013 Beta 400 RS Dirt Bike.

Shop Brake Lines for a 2013 Beta 400 RS Dirt Bike.

Shop Brake Bleeders for a 2013 Beta 400 RS Dirt Bike.

Shop Brake Tools for a 2013 Beta 400 RS Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.