FVRITO Left Hydraulic Brake Master Cylinder Assembly for 50–125cc ATVs — 22mm Lever, Single-Piston Caliper

This left brake assembly is a direct-fit replacement designed for a wide range of small-displacement ATVs, quads and mini bikes from popular Chinese manufacturers. It pairs a 22mm lever perch master cylinder with a single-piston caliper and a 1500mm brake hose, and ships with spare pads, a brake switch and accessory ties—helping you get back on the trail without searching for multiple parts. The kit’s mounting dimensions and included hardware are optimized for common frames and forks used across models from Taotao, Coolster, Roketa, Baja, Vitacci and many others.

Will this brake assembly fit my 50cc–125cc ATV or mini bike?

Compatibility covers a broad set of Chinese-brand small ATVs and mini bikes; confirm fit by checking the lever perch diameter and caliper mounting spacing against your vehicle. If your machine uses a 22mm lever perch and a 63mm caliper mounting hole distance, the unit is likely compatible.

• Lever perch diameter: 22mm (0.87 inches)
• Caliper mounting hole spacing: 63mm (2.48 inches)
• Brake hose length: 1500mm (59.06 inches)
• Common compatible brands: Taotao, Coolster, Vitacci, Roketa, Baja, NST, ICEbear, and more

What comes in the box and what tools will I need to install it?

The kit includes the master cylinder and lever perch, caliper, a set of spare pads, an extra brake switch, a fuel filter (included by the seller), and three cable ties for routing. Basic hand tools and bleeding supplies are all you need to install and commission the brake safely.

• Included: 1 brake assembly, 3 cable ties, 1 extra brake pad, 1 fuel filter, 1 extra brake switch
• Recommended tools: wrench set, Allen keys, screwdriver, brake fluid and bleeding kit
• Installation steps: mount caliper, attach hose, bleed system, adjust lever free play
• Tip: verify thread sizes and use medium-strength thread locker where appropriate

How does this assembly perform and what maintenance should I expect?

This hydraulic assembly delivers proportional braking suited to light off-road and recreational use—replacing worn or damaged stock components to restore predictable lever feel. Routine checks and pad replacements keep performance reliable over time.

• Performance: single-piston hydraulic braking for consistent, controllable stopping
• Wear items: brake pads should be inspected and replaced as needed
• Maintenance: periodic bleed and fluid change to avoid spongy lever feel
• Storage: protect from prolonged exposure to moisture to reduce corrosion risk

What should I verify before ordering to avoid fitment issues?

Measure the existing lever perch and caliper mount spacing and compare to the kit’s specs; check the hose routing to ensure 1500mm length is adequate. If you are unsure, send vehicle make and model details to the seller for fit confirmation.

• Compare lever perch: 22mm required
• Confirm caliper bolt centers: 63mm required
• Ensure 1500mm hose suits your frame routing
• Contact support with your ATV/mini bike model for verification

Who is this for: This FVRITO left hydraulic brake assembly is aimed at owners of 50cc–125cc Chinese ATVs, quads and mini bikes who need a reliable replacement for a damaged, leaking or worn front brake. It suits DIY mechanics, repair shops and riders seeking a complete kit with spare pads and basic accessories for a fast, straightforward swap. Always confirm measurements and compatibility with your machine before purchasing.