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Brake Caliper Rebuild Kit — Beta RC 4T 450

Part # 18-3315
Item #138752
Fits 46 motorcycles
  • Beta
    • RC 4T 450 · 2025 (rear)
    • RR 2T 125 · 2019–2024 (rear)
    • RR 2T 125 Race · 2021–2025 (rear)
    • RR 2T 125 X-PRO · 2025 (rear)
    • RR 2T 200 · 2019–2024 (rear)
    • RR 2T 200 Race · 2021–2025 (rear)
    • RR 2T 200 X-PRO · 2025 (rear)
    • RR 2T 250 · 2013–2024 (rear)
    • RR 2T 250 Race · 2022–2025 (rear)
    • RR 2T 250 X-PRO · 2025 (rear)
    • RR 2T 300 · 2013–2024 (rear)
    • RR 2T 300 Race · 2022–2025 (rear)
    • RR 2T 300 X-PRO · 2025 (rear)
    • RR 4T 250 · 2005–2007 (rear)
    • RR 4T 350 · 2011–2024 (rear)
    • RR 4T 350 Race · 2022–2025 (rear)
    • RR 4T 350 X-PRO · 2025 (rear)
    • RR 4T 390 · 2015–2024 (rear)
    • RR 4T 390 Race · 2022–2025 (rear)
    • RR 4T 390 X-PRO · 2025 (rear)
    • RR 4T 400 · 2005–2014 (rear)
    • RR 4T 430 · 2015–2024 (rear)
    • RR 4T 430 Race · 2022–2025 (rear)
    • RR 4T 430 X-PRO · 2025 (rear)
    • RR 4T 450 · 2005–2014 (rear)
    • RR 4T 480 · 2018–2024 (rear)
    • RR 4T 480 Race · 2022–2025 (rear)
    • RR 4T 480 X-PRO · 2025 (rear)
    • RR 4T 498 · 2012–2014 (rear)
    • RR 4T 520 · 2010–2011 (rear)
    • RR 4T 525 · 2005–2009 (rear)
    • RR-S 4T 350 · 2017–2024 (rear)
    • RR-S 4T 390 · 2017–2024 (rear)
    • RR-S 4T 390 Special Edition · 2024 (rear)
    • RR-S 4T 430 · 2017–2024 (rear)
    • RR-S 4T 500 · 2017–2024 (rear)
    • RR-S 4T 500 Special Edition · 2024 (rear)
    • RS 4T 390 · 2015–2016 (rear)
    • RS 4T 400 · 2014 (rear)
    • RS 4T 430 · 2015–2016 (rear)
    • RS 4T 500 · 2015–2016 (rear)
    • RS 4T 520 · 2014 (rear)
    • RX 2T 300 · 2021–2025 (rear)
    • RX 4T 450 · 2024–2025 (rear)
    • XTRAINER 250 · 2024–2025 (rear)
    • XTRAINER 300 · 2015–2025 (rear)

⚠ Brake parts are caliper-specific. The same model can use different calipers by trim or year (base vs SP, ABS, Brembo vs stock), and catalog data isn't always exact. Confirm this fits your bike's actual caliper before ordering.

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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
All Balls Racing Brake Caliper Rebuild Kit — Beta RC 4T 450 (2025) + 45 more
Product Details

Caliper pistons stuck, sticky lever feel, or a creeping low fluid level with no visible leak — the rubber seals inside the caliper or master cylinder are toast. All Balls rebuild kits include every rubber part you need to make ONE caliper or master cylinder new again: piston seals, dust boots, bleeder caps, pad pins, copper crush washers. OEM-spec EPDM rubber, bike-specific fitment.

Kit fits the bikes listed below. Confirm whether you need front or rear (some bikes share a kit, most don't).

Fits:

  • Beta RC 4T 450 (2025)
  • Beta RR 2T 125 (2019-2024)
  • Beta RR 2T 125 Race (2021-2025)
  • Beta RR 2T 125 X-PRO (2025)
  • Beta RR 2T 200 (2019-2024)
  • Beta RR 2T 200 Race (2021-2025)
  • Beta RR 2T 200 X-PRO (2025)
  • Beta RR 2T 250 (2013-2024)
  • Beta RR 2T 250 Race (2022-2025)
  • Beta RR 2T 250 X-PRO (2025)
  • Beta RR 2T 300 (2013-2024)
  • Beta RR 2T 300 Race (2022-2025)
  • Beta RR 2T 300 X-PRO (2025)
  • Beta RR 4T 250 (2005-2007)
  • Beta RR 4T 350 (2011-2024)
  • Beta RR 4T 350 Race (2022-2025)
  • Beta RR 4T 350 X-PRO (2025)
  • Beta RR 4T 390 (2015-2024)
  • Beta RR 4T 390 Race (2022-2025)
  • Beta RR 4T 390 X-PRO (2025)
  • Beta RR 4T 400 (2005-2014)
  • Beta RR 4T 430 (2015-2024)
  • Beta RR 4T 430 Race (2022-2025)
  • Beta RR 4T 430 X-PRO (2025)
  • Beta RR 4T 450 (2005-2014)
  • Beta RR 4T 480 (2018-2024)
  • Beta RR 4T 480 Race (2022-2025)
  • Beta RR 4T 480 X-PRO (2025)
  • Beta RR 4T 498 (2012-2014)
  • Beta RR 4T 520 (2010-2011)
  • Beta RR 4T 525 (2005-2009)
  • Beta RR-S 4T 350 (2017-2024)
  • Beta RR-S 4T 390 (2017-2024)
  • Beta RR-S 4T 390 Special Edition (2024)
  • Beta RR-S 4T 430 (2017-2024)
  • Beta RR-S 4T 500 (2017-2024)
  • Beta RR-S 4T 500 Special Edition (2024)
  • Beta RS 4T 390 (2015-2016)
  • Beta RS 4T 400 (2014)
  • Beta RS 4T 430 (2015-2016)
  • Beta RS 4T 500 (2015-2016)
  • Beta RS 4T 520 (2014)
  • Beta RX 2T 300 (2021-2025)
  • Beta RX 4T 450 (2024-2025)
  • Beta XTRAINER 250 (2024-2025)
  • Beta XTRAINER 300 (2015-2025)

Kit contents:

  • 1x Bolt Kit
  • 3x Boot
  • 2x Caliper Seal
  • 2x Washer

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