JAVIK Front Right Brake Master Cylinder for Yamaha ATVs — Aluminum OEM-Fit with Brake Switch

JAVIK Front Right Brake Master Cylinder is a direct-fit aluminum replacement assembly with brake switch made to match Yamaha OEM fit for select 2002–2011 ATVs.

If your ATV’s front right brake lever feels spongy or the master cylinder is leaking, this JAVIK unit reproduces the OEM structure for a near-identical fit and function. Engineered from high-strength aluminum and supplied with the brake switch, it’s intended as a straightforward swap for a long list of Yamaha four-wheelers. Verify the OEM number on your bike before ordering to ensure compatibility.

Which Yamaha models and years will this master cylinder fit?

This assembly fits many Yamaha ATVs across the 2002–2011 timeframe. It was designed to replace OEM numbers 5KM-2583T-01-00 and 4SH-2583T-01-00 and aligns with the factory mounting points and hydraulic connections.

• Bear Tracker 250 (YFM250) 2002–2004
• Big Bear 250 (YFM250) 2007–2009; Big Bear 400 (YFM400) 2002–2011
• Bruin 250/350 (YFM250/YFM350) mid-2000s models
• Grizzly, Kodiak, Wolverine, and YFM350/400/450/660 variants listed in product fitment

How does this part match the original Yamaha component?

The JAVIK master cylinder replicates the OEM design and mounting geometry so it installs without altering the main harness or brake plumbing. That means the brake switch connector and banjo bolt sizing align with factory specifications for easier replacement.

• Aluminum construction for high strength and hardness
• Exact OEM-style brake switch connector—no harness modification needed
• 10 mm banjo bolt compatibility and 7/8" handlebar clamp size

What comes in the package and what tools will I need?

The product ships as a complete front right master cylinder assembly including the brake switch; no manual is included. Installation is typical of ATV brake servicing, requiring basic hand tools and brake-bleeding supplies to restore system performance safely.

• Included: Front Brake Master Cylinder Assembly ×1 (with brake switch)
• Not included: installation manual, brake fluid, or bleeding kit
• Recommended tools: metric socket/box wrenches, torque wrench, screwdriver, brake-bleeding tools

Will I need to modify the bike’s wiring or hydraulic lines?

No permanent modifications are expected—the switch connector mirrors the OEM plug and the banjo bolt is standard 10 mm. As with any brake work, verify hose condition and torque fittings to specification during installation.

• Brake switch connector matches OEM—plug-and-play wiring
• 10 mm banjo bolt fits standard brake hose fittings
• Check hoses, seals, and fluid after installation for leaks and safety

Who this is for: This JAVIK master cylinder is aimed at DIY mechanics, ATV owners, and repair shops restoring front-right braking on compatible Yamaha models. It’s suitable for riders who need a reliable OEM-style replacement without reworking the harness or brake plumbing. Always confirm your ATV’s OEM part number and follow safe brake-bleeding procedures after installing the unit.