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ATV City  |  SKU: 255.08956
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Brake Caliper Pistons Front Fits Yamaha Suzuki LT-F250 02-14 LT-Z250 04-09 LTA 500 02-07 LT-A400F 02-07 LT-Z400Z 03-14

Regular price £23.33
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A Thank You to Our Valued Customers.

What sets these aftermarket brake caliper pistons apart is their ability to tackle common issues like piston seizing, fluid leaks, and inconsistent pressure that plague older ATVs, ultimately restoring the hydraulic integrity your machine needs for dependable performance. Over time, wear from dust, heat, and corrosion can lead to spongy brakes or complete failure, but these replacements use advanced engineering to deliver a tight seal and even pressure distribution, ensuring you're ready for the next adventure on the trail or in the field.

As a go-to choice for mechanics, this option stands out for its balance of affordability and longevity, providing a straightforward upgrade that keeps your Yamaha or Suzuki running smoothly without compromising on safety or ride quality.


Comprehensive Vehicle Fitment

Suzuki Models

Models / Series Years / Details
LT-F250, LT-Z250 2002-2014
LTA500 Various
LT-A400/F, LT-F400/F 2002-2007
LT-Z400 2003-2015
LT-A450X 2007-2010
LT-A500F 2003-2007
LT-A500X/XP 2008-2023
LT-F500F 2003-2007
LT-A700X 2005-2007
LT-A750X 2008-2015

Yamaha Models

Models / Series Years / Details
YFS200 (Blaster) 1988-2006
YFM250B (Bear Tracker) 1999-2004
YFM250R (Raptor) 2005-2011
YFM250X (Bear Tracker) 1999-2004
YFM350A/FA (Bruin) 2004-2006
YFM350B (Big Bear) Various
YFM350F/U (Big Bear) 1987-1999
YFM350FG (Grizzly) 2007-2014
YFM350G (Grizzly) 2007-2014
YFM350FX (Wolverine) 1995-2005
YFM350R (Raptor) 2004-2013
YFM350X (Warrior) 1987-2004
YFZ350 Various
YFM400 (Big Bear/Kodiak) 1993-2006
YFM400A (Kodiak) 2000-2004
YFM400F (Kodiak) 1996-2006
YFM400FA (Kodiak) 2000-2006
Rhino 450 (YXR450) 2006-2009
YFM450FA (Kodiak) 2003-2006
YFM450FG (Grizzly) 2007-2014
YFM450FX (Wolverine) 2006-2010
YFM550DE/PE Various
YFM550FG (Grizzly) 2009-2014
YFM600 (Grizzly) 1998-2001
YFM660F (Grizzly) 2002-2008
Rhino 660 (YXR660) 2004-2007

Features & Benefits

Feature Benefit
Precision Engineering Matches OEM specifications for perfect fit and function
High-Grade Stainless Steel Exceptional corrosion resistance for long service life
Corrosion-Resistant Coating Additional protection against moisture, mud, and road salts
Smooth Surface Finish Ensures proper seal contact and prevents premature seal wear
Tackles Common Issues Addresses piston seizing, fluid leaks, and inconsistent pressure

Product Specifications

Attribute Details
OEM Reference Part Numbers 59100-38850, 3GD-W0057-00-00
Type Front Brake Caliper Pistons
Manufacturer Aftermarket Replacement
Application Front brake systems on Yamaha and Suzuki ATVs for hydraulic caliper operation
Material High-grade stainless steel with corrosion-resistant coating
Bore Size 38mm standard
Overall Length Approximately 45mm
Quantity Set of two pistons per package
Fitment Designed for standard caliper housings requiring 38mm pistons

OEM & Aftermarket Cross-Reference Information

Brand Part Numbers
OEM Suzuki 59100-38850
OEM Yamaha 3GD-W0057-00-00
Aftermarket Various cross-reference numbers available

OEM part numbers are provided for cross-reference purposes only. Always verify fitment using your vehicle's specific model, year, and VIN before ordering.


Signs You Need Piston Replacement

  • Visible pitting, rust, or corrosion on existing piston surface

  • Brake fluid leaks around the caliper piston

  • Sticking or dragging brakes

  • Uneven brake pad wear

  • Spongy or soft brake pedal feel

  • Reduced braking performance

  • Caliper rebuild in progress


Installation Tips

  1. Inspect Caliper Bore – Before installing new pistons, check the caliper bore for scoring, pitting, or corrosion. If damaged, replace the caliper.

  2. Clean Thoroughly – Clean the caliper body with brake cleaner and a non-metallic brush. Remove all old seal residue.

  3. Use Brake Fluid as Lubricant – Lubricate seals and pistons with clean brake fluid during installation. Never use petroleum-based lubricants.

  4. Check Piston Movement – Pistons should slide smoothly in the bore with minimal resistance.

  5. Replace Seals – Always install new piston seals and dust boots when replacing pistons.

  6. Bleed the System – After installation, properly bleed the brake system to remove all air.

  7. Replace In Pairs – For balanced braking, rebuild both calipers on the front axle simultaneously.


OEM part numbers are provided for cross-reference purposes only. Always verify fitment using your vehicle's specific model, year, and VIN before ordering.

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