All Balls Racing
Back to Caliper & Master Cylinder Rebuild

Brake Caliper Piston Kit — Beta RC 4T 450 (2025)

Part # 18-9009
Item #138955
Fits 151 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)
  • Can-Am
    • Outlander 330 · 2005 (rear)
    • Outlander 330 4X4 · 2005 (rear)
    • Outlander 400 STD 2x4 · 2005 (rear)
    • Outlander 400 STD 4x4 · 2005–2015 (rear)
    • Outlander 400 XT 4x4 · 2004–2014 (rear)
    • Outlander 500 LTD 4x4 · 2010 (rear)
    • Outlander 500 STD 4x4 · 2007–2012 (rear)
    • Outlander 500 XT 4x4 · 2007–2012 (rear)
    • Outlander 650 STD 4x4 · 2006–2012 (rear)
    • Outlander 650 XT 4x4 · 2006–2012 (rear)
    • Outlander 800 STD 4x4 · 2006–2008 (rear)
    • Outlander 800 XMR · 2011–2012 (rear)
    • Outlander 800 XT 4x4 · 2006–2008 (rear)
    • Outlander 800R STD 4x4 · 2009–2011 (rear)
    • Outlander 800R XT 4x4 · 2009–2011 (rear)
    • Outlander 800R XTP 4x4 · 2010–2011 (rear)
    • Outlander Max 400 STD 4x4 · 2005–2015 (rear)
    • Outlander Max 400 XT 4x4 · 2006–2015 (rear)
    • Outlander Max 500 STD 4x4 · 2007–2012 (rear)
    • Outlander Max 500 XT 4x4 · 2007–2012 (rear)
    • Outlander Max 650 STD 4x4 · 2006–2012 (rear)
    • Outlander Max 650 XT 4x4 · 2006–2012 (rear)
    • Outlander Max 650 XTP 4x4 · 2010–2012 (rear)
    • Outlander Max 800 LTD 4x4 · 2007–2008 (rear)
    • Outlander Max 800 STD 4x4 · 2006–2008 (rear)
    • Outlander Max 800 XT 4x4 · 2006–2008 (rear)
    • Outlander Max 800R LTD 4x4 · 2009–2012 (rear)
    • Outlander Max 800R STD 4x4 · 2009–2012 (rear)
    • Outlander Max 800R XT 4x4 · 2009–2012 (rear)
    • Outlander Max 800R XTP 4x4 · 2010–2012 (rear)
    • Renegade 800 · 2007 (rear)
  • Gas-Gas
    • EC125 · 2015 (rear)
    • EC200 · 2009–2019 (rear)
    • EC250 · 2009–2019 (rear)
    • EC250 4T · 2010–2015 (rear)
    • EC250 Replica · 2013–2014 (rear)
    • EC250 Six Days · 2019 (rear)
    • EC300 · 2009–2019 (rear)
    • EC300 4T · 2013–2015 (rear)
    • EC300 Replica · 2013–2014 (rear)
    • EC300 Six Days · 2019 (rear)
    • EC450 4T · 2013–2015 (rear)
    • Enduro GP 250 · 2018 (rear)
    • Enduro GP 300 · 2018 (rear)
    • MC125 · 2009 (rear)
    • MC250 · 2009 (rear)
    • XC200 · 2018–2019 (rear)
    • XC250 · 2018–2019 (rear)
    • XC300 · 2018–2019 (rear)
  • Kawasaki
    • KL650 E (KLR) · 2008–2018 (rear)
    • KLX450R (AU) · 2018–2019 (rear)
    • KLX450R · 2008–2009 (rear)
    • KX250F · 2004–2025 (rear)
    • KX250X · 2021–2025 (rear)
    • KX450F · 2006–2025 (rear)
    • KX450SR · 2022–2025 (rear)
    • KX450X · 2021–2025 (rear)
  • Polaris
    • 300 2x4 · 1994–1995 (rear)
    • 300 4x4 · 1994–1995 (rear)
    • 400L 2x4 · 1994–1995 (rear)
    • 400L 4x4 · 1994 (rear)
    • Big Boss 300 6x6 · 1994 (rear)
    • Big Boss 350L 6x6 · 1993 (rear)
    • Big Boss 400L 6x6 · 1994–1997 (rear)
    • Big Boss 500 6x6 · 1998–1999 (rear)
    • Magnum 400L 6x6 · 1996–1997 (rear)
    • Magnum 425 2x4 · 1995–1998 (rear)
    • Magnum 425 4x4 · 1995–1998 (rear)
    • Magnum 425 6x6 · 1996–1997 (rear)
    • Scrambler 400 4x4 · 1995–1997 (rear)
    • Scrambler 500 4x4 · 1997 (rear)
    • Sportsman 350 4x4 · 1993 (rear)
    • Sportsman 400 4x4 · 1994–1996 (rear)
    • Sportsman 500 4x4 · 1996–1997 (rear)
    • Trail Blazer 250 · 1994–1998 (rear)
    • Trail Boss 250 2x4 · 1994–1999 (rear)
    • Trail Boss 250 4x4 · 1995 (rear)
    • Xplorer 300 4x4 · 1996–1999 (rear)
    • Xplorer 400L 4x4 · 1995–1998 (rear)
    • Xplorer 500 · 1997 (rear)
    • Xpress 300 · 1996–1999 (rear)
    • Xpress 400L 2x4 · 1996–1997 (rear)
    • Rieju MR Pro 200 · 2022–2024 (rear)
    • MR Pro 250 · 2022–2024 (rear)
    • MR Pro 300 · 2021–2024 (rear)
    • MR Racing 200 · 2022–2023 (rear)
    • MR Racing 250 · 2021–2023 (rear)
    • MR Racing 300 · 2020–2024 (rear)
  • Suzuki
    • DRZ400S · 2025 (rear)
    • DRZ400SM · 2025 (rear)
    • RMX450 · 2010–2019 (rear)
    • RMZ250 · 2004–2025 (rear)
    • RMZ450 · 2005–2025 (rear)
  • Yamaha
    • WR250F · 2003–2025 (rear)
    • WR250R DUAL SPORT · 2008–2020 (rear)
    • WR250X Supermoto · 2008–2011 (rear)
    • WR450F · 2003–2025 (rear)
    • YZ125 · 2003–2025 (rear)
    • YZ125X · 2020–2025 (rear)
    • YZ250 · 2003–2025 (rear)
    • YZ250F · 2003–2025 (rear)
    • YZ250FX · 2015–2025 (rear)
    • YZ250X · 2016–2025 (rear)
    • YZ450F · 2003–2025 (rear)
    • YZ450FX · 2016–2025 (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.

$27.97 $26.57 Save $1.40
/
Shipping calculated at checkout.
  • In stock, ready to ship
  • Backordered, shipping soon
  • Free U.S. shipping on orders $150+ ($15 flat under)
  • Ships from one of three U.S. warehouses
  • Secure checkout
WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
All Balls Racing Brake Caliper Piston Kit — Beta RC 4T 450 (2025) + 119 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)
  • Can-Am Outlander 330 (2005)
  • Can-Am Outlander 330 4X4 (2005)
  • Can-Am Outlander 400 STD 2x4 (2005)
  • Can-Am Outlander 400 STD 4x4 (2005-2015)
  • Can-Am Outlander 400 XT 4x4 (2004-2014)
  • Can-Am Outlander 500 LTD 4x4 (2010)
  • Can-Am Outlander 500 STD 4x4 (2007-2012)
  • Can-Am Outlander 500 XT 4x4 (2007-2012)
  • Can-Am Outlander 650 STD 4x4 (2006-2012)
  • Can-Am Outlander 650 XT 4x4 (2006-2012)
  • Can-Am Outlander 800 STD 4x4 (2006-2008)
  • Can-Am Outlander 800 XMR (2011-2012)
  • Can-Am Outlander 800 XT 4x4 (2006-2008)
  • Can-Am Outlander 800R STD 4x4 (2009-2011)
  • Can-Am Outlander 800R XT 4x4 (2009-2011)
  • Can-Am Outlander 800R XTP 4x4 (2010-2011)
  • Can-Am Outlander Max 400 STD 4x4 (2005-2015)
  • Can-Am Outlander Max 400 XT 4x4 (2006-2015)
  • Can-Am Outlander Max 500 STD 4x4 (2007-2012)
  • Can-Am Outlander Max 500 XT 4x4 (2007-2012)
  • Can-Am Outlander Max 650 STD 4x4 (2006-2012)
  • Can-Am Outlander Max 650 XT 4x4 (2006-2012)
  • Can-Am Outlander Max 650 XTP 4x4 (2010-2012)
  • Can-Am Outlander Max 800 LTD 4x4 (2007-2008)
  • Can-Am Outlander Max 800 STD 4x4 (2006-2008)
  • Can-Am Outlander Max 800 XT 4x4 (2006-2008)
  • Can-Am Outlander Max 800R LTD 4x4 (2009-2012)
  • Can-Am Outlander Max 800R STD 4x4 (2009-2012)
  • Can-Am Outlander Max 800R XT 4x4 (2009-2012)
  • Can-Am Outlander Max 800R XTP 4x4 (2010-2012)
  • Can-Am Renegade 800 (2007)
  • Gas-Gas EC125 (2015)
  • Gas-Gas EC200 (2009-2019)
  • Gas-Gas EC250 (2009-2019)
  • Gas-Gas EC250 4T (2010-2015)
  • Gas-Gas EC250 Replica (2013-2014)
  • Gas-Gas EC250 Six Days (2019)
  • Gas-Gas EC300 (2009-2019)
  • Gas-Gas EC300 4T (2013-2015)
  • Gas-Gas EC300 Replica (2013-2014)
  • Gas-Gas EC300 Six Days (2019)
  • Gas-Gas EC450 4T (2013-2015)
  • Gas-Gas Enduro GP 250 (2018)
  • Gas-Gas Enduro GP 300 (2018)
  • Gas-Gas MC125 (2009)
  • Gas-Gas MC250 (2009)
  • Gas-Gas XC200 (2018-2019)
  • Gas-Gas XC250 (2018-2019)
  • Gas-Gas XC300 (2018-2019)
  • Kawasaki KL650 E (KLR (2008-2018)
  • Kawasaki KLX450R (AU (2018-2019)
  • Kawasaki KLX450R (2008-2009)
  • Kawasaki KX250F (2004-2025)
  • Kawasaki KX250X (2021-2025)
  • Kawasaki KX450F (2006-2025)
  • Kawasaki KX450SR (2022-2025)
  • Kawasaki KX450X (2021-2025)
  • Suzuki DRZ400S (2025)
  • Suzuki DRZ400SM (2025)
  • Suzuki RMX450 (2010-2019)
  • Suzuki RMZ250 (2004-2025)
  • Suzuki RMZ450 (2005-2025)
  • Yamaha WR250F (2003-2025)
  • Yamaha WR250R DUAL SPORT (2008-2020)
  • Yamaha WR250X Supermoto (2008-2011)
  • Yamaha WR450F (2003-2025)
  • Yamaha YZ125 (2003-2025)
  • Yamaha YZ125X (2020-2025)
  • Yamaha YZ250 (2003-2025)
  • Yamaha YZ250F (2003-2025)
  • Yamaha YZ250FX (2015-2025)
  • Yamaha YZ250X (2016-2025)
  • Yamaha YZ450F (2003-2025)
  • Yamaha YZ450FX (2016-2025)

Kit contents:

  • 1x Caliper Piston

You may also like