JAVIK Front Right Brake Master Cylinder for Yamaha ATVs — Aluminum Body with Brake Switch (OE 5KM-2583T-01-00)

JAVIK's Front Right Brake Master Cylinder is a direct-fit replacement assembly for selected Yamaha ATVs, offering an OEM-style aluminum body and integrated brake switch for plug-and-play installation.

If your Yamaha ATV's front right brake lever feels soft, the switch no longer registers, or the original master cylinder shows leaks or wear, this JAVIK unit is built to replicate the factory fit and function. Manufactured to match the OEM 5KM-2583T-01-00 footprint (replacement for 4SH-2583T-01-00), the assembly arrives complete with the brake switch and is designed for 7/8" handlebars and a 10 mm banjo bolt. It aims to simplify repairs by eliminating the need to modify the main wiring harness while restoring dependable front-right braking action.

Which Yamaha models will this front right master cylinder fit?

This JAVIK master cylinder fits a wide range of Yamaha ATV models across early-2000s to 2011 production years. Always confirm the OEM number on your original part before ordering to ensure compatibility.

• Bear Tracker 250 (YFM250) 2002–2004
• Big Bear 250 (YFM250) 2007–2009, Big Bear 400 (YFM400) 2002–2011
• Bruin 250/350 (YFM250/350) 2004–2006
• Grizzly 350/400/450/660 (YFM350/400/450/660) 2002–2011
• Kodiak 400/450 (YFM400/450) 2002–2006
• Wolverine 350/450 (YFM350/450) 2002–2010

How does this replacement match the original equipment (OEM) part?

The JAVIK assembly reproduces the OEM structure and mounting points and includes the exact brake switch connector so you can reconnect without splicing or wiring changes. It's constructed from aluminum for strength and corrosion resistance while preserving the original factory geometry.

• OEM reference: 5KM-2583T-01-00; replacement for 4SH-2583T-01-00
• Aluminum body for high strength and hardness
• Includes factory-style brake switch with matching connector
• Designed for standard 7/8" handlebars and uses a 10 mm banjo bolt

What is included in the package and is installation difficult?

The package contains one front brake master cylinder assembly with the brake switch preinstalled. Installation is straightforward for users comfortable with basic ATV maintenance; no wiring modifications should be necessary if your ATV uses the OEM connector type.

• Front Brake Master Cylinder Assembly ×1 (with brake switch)
• No instruction manual included — basic tools and bleed procedure required
• Direct-mount replacement — uses original lever clamp and mounting studs
• Expect to bleed the brake system after installation to remove air

Will this part restore braking performance and how should I verify fit?

By restoring a leak-free, correctly seated master cylinder and an operational brake switch, this assembly helps bring back consistent front-right braking control. Because fit depends on model year and original OEM number, verify your current master cylinder's part number before purchase.

• Check your ATV's existing OEM number (5KM-2583T-01-00 or 4SH-2583T-01-00)
• Inspect banjo bolt size (10 mm) and handlebar clamp fit (7/8")
• After install, bleed brakes and test lever feel and switch activation
• Replace brake fluid and follow Yamaha fluid specifications

Who is this for: This JAVIK Front Right Brake Master Cylinder is aimed at ATV owners and technicians restoring braking reliability on compatible Yamaha models from 2002–2011. It's suited for riders who prefer a direct OEM-style replacement with an integrated brake switch to avoid wiring alterations, and for garages performing routine brake repairs or part upgrades.