All Balls Racing ABR18-3186 Front Brake Caliper Rebuild Kit for 1988–1992 Polaris Big Boss and Trail Boss

• Each kit includes OEM quality parts that are essential to completely rebuilding each specific component of the braking system
• Precision Machined

Restore reliable front-braking performance with the All Balls Racing ABR18-3186 Front Brake Caliper Rebuild Kit. Designed for select Polaris powersports applications, this kit includes OEM-quality components needed to completely rebuild the front brake caliper assembly. It is a practical solution for replacing worn internal caliper parts during routine maintenance or brake-system restoration.

Each component is precision machined to support proper fit, consistent operation, and dependable service life. Rebuilding the caliper can help improve brake engagement and hydraulic performance when existing seals or related internal parts have deteriorated. The kit is designed for direct application-specific service, helping simplify installation compared with sourcing individual replacement components.

The All Balls Racing ABR18-3186 fits select 1988–1992 Polaris models, including the 1988 Polaris Trail Boss 250 2X4 and 4X4, 1989–1990 Polaris Big Boss 250 4X6, 1989–1990 Polaris Trail Boss 250 2X4 and 4X4, the 1990 Polaris Trail Blazer 250, and the 1990 Polaris Trail Boss 350L 2X4. Confirm the vehicle application and brake configuration before ordering to ensure proper fitment.

Features:

• OEM-Quality Components: Includes essential replacement parts for completely rebuilding the specified front brake caliper.
• Precision Machined: Manufactured for accurate fit and dependable caliper operation.
• Application-Specific Design: Developed for select Polaris powersports brake-system applications.
• Brake Performance Support: Helps restore proper hydraulic function and consistent brake engagement when worn internal components are replaced.

Fitments:
1988 Polaris Trail Boss 250 2X4 Base
1988 Polaris Trail Boss 250 4X4 Base
1989 Polaris Big Boss 250 4X6 Base
1989 Polaris Trail Boss 250 2X4 Base
1989 Polaris Trail Boss 250 4X4 Base
1990 Polaris Big Boss 250 4X6 Base
1990 Polaris Trail Blazer 250 Base
1990 Polaris Trail Boss 250 2X4 Base
1990 Polaris Trail Boss 250 4X4 Base
1990 Polaris Trail Boss 350L 2X4 Base
1990 Polaris Trail Boss 350L 4X4 Base
1991 Polaris Big Boss 250 4X6 Base
1991 Polaris Big Boss 250 6X6 Base
1991 Polaris Trail Blazer 250 Base
1991 Polaris Trail Boss 250 2X4 Base
1991 Polaris Trail Boss 250 4X4 Base
1991 Polaris Trail Boss 350L 2X4 Base
1991 Polaris Trail Boss 350L 4X4 Base
1992 Polaris Big Boss 250 4X6 Base
1992 Polaris Big Boss 250 6X6 Base
1992 Polaris Trail Blazer 250 Base
1992 Polaris Trail Boss 250 2X4 Base
1992 Polaris Trail Boss 250 4X4 Base
1992 Polaris Trail Boss 350L 2X4 Base
1992 Polaris Trail Boss 350L 4X4 Base
1993 Polaris Big Boss 250 6X6 Base
1993 Polaris Big Boss 350L 6X6 Base
1993 Polaris Trail Blazer 250 Base
1993 Polaris Trail Boss 250 2X4 Base
1993 Polaris Trail Boss 250 4X4 Base
1994 Polaris 300 2X4 Base
1994 Polaris 300 4X4 Base
1994 Polaris 400L 2X4 Base
1994 Polaris 400L 4X4 Base
1994 Polaris Big Boss 300 6X6 Base
1994 Polaris Big Boss 400L 6X6 Base
1994 Polaris Sportsman 400 4X4 Base
1994 Polaris Trail Blazer 250 Base
1995 Polaris 300 2X4 Base
1995 Polaris 300 4X4 Base
1995 Polaris 400L 2X4 Base
1995 Polaris Big Boss 400L 6X6 Base
1995 Polaris Magnum 425 2X4 Base
1995 Polaris Magnum 425 4X4 Base
1995 Polaris Scrambler 400 4X4 Base
1995 Polaris Sportsman 400 4X4 Base
1995 Polaris Trail Blazer 250 Base
1996 Polaris Big Boss 400L 6X6 Base
1996 Polaris Magnum 425 2X4 Base
1996 Polaris Magnum 425 4X4 Base
1996 Polaris Magnum 425 6X6 Base
1996 Polaris Scrambler 400 4X4 Base
1996 Polaris Sportsman 400 4X4 Base
1996 Polaris Trail Blazer 250 Base
1996 Polaris Xplorer 300 4X4 Base
1996 Polaris Xpress 300 Base
1997 Polaris Big Boss 400L 6X6 Base
1997 Polaris Magnum 425 2X4 Base
1997 Polaris Magnum 425 4X4 Base
1997 Polaris Magnum 425 6X6 Base
1997 Polaris Scrambler 400 4X4 Base
1997 Polaris Scrambler 500 4X4 Base
1997 Polaris Trail Blazer 250 Base
1997 Polaris Xplorer 300 4X4 Base
1997 Polaris Xpress 300 Base
1998 Polaris Big Boss 500 6X6 Base
1998 Polaris Magnum 425 2X4 Base
1998 Polaris Magnum 425 4X4 Base
1998 Polaris Scrambler 400 4X4 Base
1998 Polaris Scrambler 500 4X4 Base
1998 Polaris Trail Blazer 250 Base
1998 Polaris Xplorer 300 4X4 Base
1998 Polaris Xpress 300 Base
1999 Polaris Big Boss 500 6X6 Base
1999 Polaris Magnum 500 4X4 Base
1999 Polaris Scrambler 400 4X4 Base
1999 Polaris Scrambler 500 4X4 Base
1999 Polaris Sportsman 335 Base
1999 Polaris Trail Blazer 250 Base
1999 Polaris Worker 335 Base
1999 Polaris Xplorer 300 4X4 Base
1999 Polaris Xpress 300 Base
2000 Polaris Magnum 325 2X4 Base
2000 Polaris Magnum 325 4X4 Base
2000 Polaris Magnum 500 4X4 Base
2000 Polaris Scrambler 400 2X4 Base
2000 Polaris Scrambler 400 4X4 Base
2000 Polaris Scrambler 500 4X4 Base
2000 Polaris Sportsman 335 Base
2000 Polaris Trail Blazer 250 Base
2000 Polaris Trail Boss 325 Base
2000 Polaris Xpedition 325 Base
2000 Polaris Xpedition 425 Base
2000 Polaris Xplorer 250 4X4 Base
2001 Polaris Magnum 325 2X4 Base
2001 Polaris Magnum 325 4X4 Base
2001 Polaris Magnum 500 4X4 Base
2001 Polaris Scrambler 400 2X4 Base
2001 Polaris Scrambler 400 4X4 Base
2001 Polaris Scrambler 500 2X4 Base
2001 Polaris Scrambler 500 4X4 Base
2001 Polaris Trail Blazer 250 Base
2001 Polaris Trail Boss 325 Base
2001 Polaris Xpedition 325 Base
2001 Polaris Xpedition 425 Base
2001 Polaris Xplorer 250 4X4 Base
2002 Polaris Magnum 325 2X4 Base
2002 Polaris Magnum 325 4X4 Base
2002 Polaris Scrambler 400 2X4 Base
2002 Polaris Scrambler 400 4X4 Base
2002 Polaris Scrambler 500 2X4 Base
2002 Polaris Scrambler 500 4X4 Base
2002 Polaris Trail Blazer 250 Base
2002 Polaris Trail Boss 325 Base
2002 Polaris Xpedition 325 Base
2002 Polaris Xpedition 425 Base
2002 Polaris Xplorer 250 4X4 Base
2003 Polaris Magnum 330 2X4 Base
2003 Polaris Scrambler 500 4X4 Base
2003 Polaris Trail Blazer 250 Base
2003 Polaris Trail Blazer 400 Base
2003 Polaris Trail Boss 330 Base
2004 Polaris Magnum 330 2X4 Base
2004 Polaris Scrambler 500 4X4 Base
2004 Polaris Trail Blazer 250 Base
2004 Polaris Trail Boss 330 Base
2005 Polaris Magnum 330 2X4 Base
2005 Polaris Magnum 330 4X4 Base
2005 Polaris Scrambler 500 4X4 Base
2005 Polaris Sportsman 700 Efi Base
2005 Polaris Sportsman 800 EFI Base
2005 Polaris Trail Blazer 250 Base
2005 Polaris Trail Boss 330 Base
2006 Polaris Outlaw 500 Base
2006 Polaris Scrambler 500 4X4 Base
2006 Polaris Sportsman 450 Base
2006 Polaris Sportsman 500 Efi Base
2006 Polaris Sportsman 700 Efi Base
2006 Polaris Sportsman 800 EFI Base
2006 Polaris Trail Blazer 250 Base
2006 Polaris Trail Boss 330 Base
2007 Polaris Outlaw 500 Base
2007 Polaris Predator 500 Base
2007 Polaris Scrambler 500 4X4 Base
2007 Polaris Sportsman 450 Base
2007 Polaris Sportsman 500 Efi Base
2007 Polaris Sportsman 700 Efi Base
2007 Polaris Sportsman 800 EFI Base
2007 Polaris Trail Boss 330 Base
2008 Polaris Outlaw 525 Irs Base
2008 Polaris Outlaw 525 S Base
2008 Polaris Scrambler 500 4X4 Base
2008 Polaris Sportsman 500 Efi Base
2008 Polaris Sportsman 800 EFI Base
2008 Polaris Trail Blazer 330 Base
2008 Polaris Trail Boss 330 Base
2009 Polaris Outlaw 525 Irs Base
2009 Polaris Outlaw 525 S Base
2009 Polaris Scrambler 500 4X4 Base
2009 Polaris Sportsman 500 Efi Base
2009 Polaris Sportsman 800 EFI Base
2009 Polaris Trail Blazer 330 Base
2009 Polaris Trail Boss 330 Base
2010 Polaris Outlaw 525 Irs Base
2010 Polaris Outlaw 525 S Base
2010 Polaris Scrambler 500 4X4 Base
2010 Polaris Sportsman 800 EFI Base
2010 Polaris Trail Blazer 330 Base
2010 Polaris Trail Boss 330 Base
2011 Polaris Outlaw 525 Irs Base
2011 Polaris Scrambler 500 4X4 Base
2011 Polaris Sportsman 800 EFI Base
2011 Polaris Trail Blazer 330 Base
2011 Polaris Trail Boss 330 Base
2012 Polaris Scrambler 500 4X4 Base
2012 Polaris Sportsman 550 Base
2012 Polaris Sportsman 550 EPS Base
2012 Polaris Sportsman 800 EFI Base
2012 Polaris Trail Blazer 330 Base
2012 Polaris Trail Boss 330 Base
2013 Polaris Sportsman 550 Base
2013 Polaris Sportsman 550 EPS Base
2013 Polaris Sportsman 800 EFI Base
2013 Polaris Trail Blazer 330 Base
2013 Polaris Trail Boss 330 Base
2014 Polaris RZR 800 Base
2014 Polaris RZR S 800 Base
2014 Polaris Sportsman 550 EPS Base
2014 Polaris Sportsman 800 EFI Base
2015 Polaris Scrambler 850 Base
2015 Polaris Sportsman 570 SP Base
2015 Polaris Sportsman 850 SP Base
2016 Polaris Scrambler 850 Base
2016 Polaris Sportsman 450 HO Base
2016 Polaris Sportsman 570 SP Base
2016 Polaris Sportsman 850 SP Base
2017 Polaris ACE 500 Base
2017 Polaris ACE 570 Base
2017 Polaris ACE 570 Sp Base
2017 Polaris Scrambler 850 Base
2017 Polaris Sportsman 450 HO Base
2017 Polaris Sportsman 570 SP Base
2017 Polaris Sportsman 850 SP Base
2018 Polaris ACE 500 Base
2018 Polaris Scrambler 850 Base
2018 Polaris Sportsman 450 HO Base
2018 Polaris Sportsman 570 SP Base
2018 Polaris Sportsman 850 SP Base
2019 Polaris ACE 500 Base
2019 Polaris Scrambler 850 Base
2019 Polaris Sportsman 450 HO Base
2019 Polaris Sportsman 570 SP Base
2019 Polaris Sportsman 850 SP Base
2020 Polaris Scrambler 850 Base
2020 Polaris Sportsman 450 HO Base
2020 Polaris Sportsman 450 HO EPS Base
2020 Polaris Sportsman 570 EPS Base
2020 Polaris Sportsman 570 Premium Base
2021 Polaris Scrambler 850 Base
2021 Polaris Sportsman 450 HO Base
2021 Polaris Sportsman 570 Premium Base
2021 Polaris Sportsman 570 Trail Base
2021 Polaris Sportsman 570 Ultimate Trail LE Base
2021 Polaris Sportsman 570 Utility HD LE Base
2021 Polaris Sportsman 850 Base
2021 Polaris Sportsman 850 Premium Base
2022 Polaris Scrambler 850 Base
2022 Polaris Sportsman 1000 XP Ultimate Trail Base
2022 Polaris Sportsman 450 HO Base
2022 Polaris Sportsman 570 Premium Base
2022 Polaris Sportsman 570 Trail Base
2022 Polaris Sportsman 570 Ultimate Trail LE Base
2022 Polaris Sportsman 570 Utility HD Base
2022 Polaris Sportsman 850 Base
2022 Polaris Sportsman 850 Premium Base
2023 Polaris Scrambler 850 Base
2023 Polaris Sportsman 1000 XP Ultimate Trail Base
2023 Polaris Sportsman 450 HO Base
2023 Polaris Sportsman 570 Premium Base
2023 Polaris Sportsman 570 Trail Base
2023 Polaris Sportsman 570 Utility HD Base
2023 Polaris Sportsman 850 Base
2024 Polaris Scrambler 850 Base
2024 Polaris Sportsman 1000 XP Hunter Edition Base
2024 Polaris Sportsman 1000 XP Ultimate Trail Base
2024 Polaris Sportsman 450 HO Base
2024 Polaris Sportsman 570 Premium Base
2024 Polaris Sportsman 570 Trail Base
2024 Polaris Sportsman 570 Utility HD Base
2024 Polaris Sportsman 850 Base
2024 Polaris Sportsman 850 Premium Base
2025 Polaris Sportsman 570 Trail Base
2025 Polaris Sportsman 850 Premium Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1