Hero image 0 of Front Brake Master Cylinder Rebuild Kit Compatible with 2006-2025 Yamaha Raptor 700 ATV Sport Piston Seals Spring Gaitor boot Yamaha YFZ-R Yamaha YFZ-X 1S3-W0042-50-00 New Complete, 0 of 1
Front Brake Master Cylinder Rebuild Kit Compatible with 2006-2025 Yamaha Raptor 700 ATV Sport Piston Seals Spring Gaitor boot Yamaha YFZ-R Yamaha YFZ-X 1S3-W0042-50-00 New Complete
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Key item features
- Rareelectrical Compatible With Yamaha
- Yamaha Models: Raptor 700 Hp Atv — 2006-2025 Raptor R 700 Hp Atv — 2006-2025 Raptor Se 700 Hp Atv — 2007-2025 Yfz-R 450 Hp Atv — 2009-2025 Yfz-R Se 450 Hp Atv — 2010-2025 Yfz-X 450 Hp Atv — 2010-2011
- Manufacturer Part Number: 06-355 Cross-Reference Oem Part Numbers: Yamaha: 1S3-W0042-50-00 Notes: • Complete Front Brake Master Cylinder Rebuild Kit • Fits Current-Production Raptor 700 And Yfz450r Models • Always Use Fresh Dot 4 Brake Fluid After Rebuild Kit Contents: • Master Cylinder Piston — Oem Specification • Return Spring — Factory Tension Spec • Primary Seal — High-Temperature Dot 4 Compatible • Secondary Seal — Prevents Fluid Bypass • Gaitor Boot (Dust Cover) — Keeps Contaminants Out • Circlip — Secures Piston Assembly • Copper Crush Washers — For Banjo Bolt Sealing • Red Rubber Assembly Grease — Protects Seals During Installation Function: The Front Brake Master Cylinder Converts Lever Pressure Into Hydraulic Pressure To Actuate The Brake Caliper. Over Time, Internal Seals Wear And Degrade, Causing Brake Fade, Spongy Lever Feel, Fluid Leaks, Or Complete Loss Of Front Braking. This Rebuild Kit Replaces All Wear Components To Restore Full Braking Performance. When To Rebuild: • Brake Lever Pulls To Handlebar Even After Bleeding • Visible Fluid Leak At Master Cylinder Body Or Lever Pivot • Spongy Or Inconsistent Brake Feel • Brake Fluid Discoloration (Dark Or Cloudy Fluid) • During Routine Maintenance Every 2-3 Years Or As Needed Installation Notes: • Clean Master Cylinder Bore Thoroughly Before Installing New Components • Apply Included Red Rubber Grease To Seals During Assembly • Use Fresh Dot 4 Brake Fluid — Never Reuse Old Fluid • Bleed Brake System Completely After Rebuild • Verify No Air In System — Lever Should Feel Firm With No Sponginess
- Source: Aftermarket
- One Year Manufacturer's Warranty.
Specs
- Manufacturer part number6-355A1
- Vehicle makeYamaha
- Vehicle modelRaptor 700 HP, Raptor R 700 HP, Raptor SE 700 HP, YFZ-R 450 HP, YFZ-R SE 450 HP, YFZ-X 450 HP
- Vehicle year2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
- Vehicle fitment typeSpecific
- BrandRareelectrical
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Product details
Front Brake Master Cylinder Rebuild Kit — Yamaha Raptor 700 / YFZ450R
Kit Contents:
• Master cylinder piston — OEM specification
• Return spring — factory tension spec
• Primary seal — high-temperature DOT 4 compatible
• Secondary seal — prevents fluid bypass
• Gaitor boot (dust cover) — keeps contaminants out
• Circlip — secures piston assembly
• Copper crush washers — for banjo bolt sealing
• Red rubber assembly grease — protects seals during installation
Applications:
• Yamaha Raptor 700 (2006-2025) including R and SE editions
• Yamaha YFZ-R 450 (2009-2025) including SE
• Yamaha YFZ-X 450 (2010-2011)
Function:
The front brake master cylinder converts lever pressure into hydraulic pressure to actuate the brake caliper. Over time, internal seals wear and degrade, causing brake fade, spongy lever feel, fluid leaks, or complete loss of front braking. This rebuild kit replaces all wear components to restore full braking performance.
When to Rebuild:
• Brake lever pulls to handlebar even after bleeding
• Visible fluid leak at master cylinder body or lever pivot
• Spongy or inconsistent brake feel
• Brake fluid discoloration (dark or cloudy fluid)
• During routine maintenance every 2-3 years or as needed
Installation Notes:
• Clean master cylinder bore thoroughly before installing new components
• Apply included red rubber grease to seals during assembly
• Use fresh DOT 4 brake fluid — never reuse old fluid
• Bleed brake system completely after rebuild
• Verify no air in system — lever should feel firm with no sponginess
Kit Contents:
• Master cylinder piston — OEM specification
• Return spring — factory tension spec
• Primary seal — high-temperature DOT 4 compatible
• Secondary seal — prevents fluid bypass
• Gaitor boot (dust cover) — keeps contaminants out
• Circlip — secures piston assembly
• Copper crush washers — for banjo bolt sealing
• Red rubber assembly grease — protects seals during installation
Applications:
• Yamaha Raptor 700 (2006-2025) including R and SE editions
• Yamaha YFZ-R 450 (2009-2025) including SE
• Yamaha YFZ-X 450 (2010-2011)
Function:
The front brake master cylinder converts lever pressure into hydraulic pressure to actuate the brake caliper. Over time, internal seals wear and degrade, causing brake fade, spongy lever feel, fluid leaks, or complete loss of front braking. This rebuild kit replaces all wear components to restore full braking performance.
When to Rebuild:
• Brake lever pulls to handlebar even after bleeding
• Visible fluid leak at master cylinder body or lever pivot
• Spongy or inconsistent brake feel
• Brake fluid discoloration (dark or cloudy fluid)
• During routine maintenance every 2-3 years or as needed
Installation Notes:
• Clean master cylinder bore thoroughly before installing new components
• Apply included red rubber grease to seals during assembly
• Use fresh DOT 4 brake fluid — never reuse old fluid
• Bleed brake system completely after rebuild
• Verify no air in system — lever should feel firm with no sponginess
- Rareelectrical Compatible With Yamaha
- Yamaha Models: Raptor 700 Hp Atv — 2006-2025 Raptor R 700 Hp Atv — 2006-2025 Raptor Se 700 Hp Atv — 2007-2025 Yfz-R 450 Hp Atv — 2009-2025 Yfz-R Se 450 Hp Atv — 2010-2025 Yfz-X 450 Hp Atv — 2010-2011
- Manufacturer Part Number: 06-355 Cross-Reference Oem Part Numbers: Yamaha: 1S3-W0042-50-00 Notes: • Complete Front Brake Master Cylinder Rebuild Kit • Fits Current-Production Raptor 700 And Yfz450r Models • Always Use Fresh Dot 4 Brake Fluid After Rebuild Kit Contents: • Master Cylinder Piston — Oem Specification • Return Spring — Factory Tension Spec • Primary Seal — High-Temperature Dot 4 Compatible • Secondary Seal — Prevents Fluid Bypass • Gaitor Boot (Dust Cover) — Keeps Contaminants Out • Circlip — Secures Piston Assembly • Copper Crush Washers — For Banjo Bolt Sealing • Red Rubber Assembly Grease — Protects Seals During Installation Function: The Front Brake Master Cylinder Converts Lever Pressure Into Hydraulic Pressure To Actuate The Brake Caliper. Over Time, Internal Seals Wear And Degrade, Causing Brake Fade, Spongy Lever Feel, Fluid Leaks, Or Complete Loss Of Front Braking. This Rebuild Kit Replaces All Wear Components To Restore Full Braking Performance. When To Rebuild: • Brake Lever Pulls To Handlebar Even After Bleeding • Visible Fluid Leak At Master Cylinder Body Or Lever Pivot • Spongy Or Inconsistent Brake Feel • Brake Fluid Discoloration (Dark Or Cloudy Fluid) • During Routine Maintenance Every 2-3 Years Or As Needed Installation Notes: • Clean Master Cylinder Bore Thoroughly Before Installing New Components • Apply Included Red Rubber Grease To Seals During Assembly • Use Fresh Dot 4 Brake Fluid — Never Reuse Old Fluid • Bleed Brake System Completely After Rebuild • Verify No Air In System — Lever Should Feel Firm With No Sponginess
- Source: Aftermarket
- One Year Manufacturer's Warranty.
info:
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Specifications
Manufacturer part number
6-355A1
Vehicle make
Yamaha
Vehicle model
Raptor 700 HP, Raptor R 700 HP, Raptor SE 700 HP, YFZ-R 450 HP, YFZ-R SE 450 HP, YFZ-X 450 HP
Vehicle year
2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Warranty
Warranty information
RAREELECTRICAL products, when properly installed, are warranted against defects to the original purchaser for 1 year from date of purchase. Warranty does not cover failure due to accident, neglect or the result of normal wear & tear. Improper installation, careless handling or disassembly will void warranty. Failures due to rust, abuse, broken gears, housings or components shall not be considered for warranty, nor products used in applications which they were not intended. The sole responsibility of RAREELECTRICAL - if any - shall be the replacement of defective product. It is the responsibility of the customer to verify the correct information prior to purchasing any product from RAREELECTRICAL. All purchases made in error, bought by mistake, or returned to sender due to an incorrect address are subject to a 20% restocking fee & require a return authorization. In these cases, domestic return shipping costs will also be deducted from the refund using our discounted shipping rates.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
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