FVRITO 50-inch Left Hydraulic Disc Hand Brake Kit for Mini Bikes — Master Cylinder & Caliper, 1270mm Hose

This complete hydraulic brake kit replaces or upgrades mechanical rear braking on selected mini bikes, including Baja Doodle Bug DB30 and several Baja Blitz models. It pairs a hand-operated master cylinder with a mounting-ready caliper and a 1270mm (50 inch) hydraulic hose to deliver consistent stopping power without the push-pull friction of cable systems. The kit is sized and pitched for common minibike brackets but requires careful fitting and proper torque to ensure leak-free, safe operation.

What does this hydraulic brake kit include and how is it sized?

The FVRITO assembly includes a left-hand master cylinder with lever, a rear brake caliper preassembled for disc use, and a 1270mm (50 in) hydraulic hose. The bottom pump installation pitch measures 51mm (2.01 in), a common spacing for many mini bike frames.

• Left-hand master cylinder with lever and reservoir
• Rear disc caliper ready for mounting
• 1270mm (50 in) hydraulic line pre-fitted
• 51mm bottom pump mounting pitch for bracket fit

Which mini bikes will this FVRITO brake fit?

This kit is designed for Baja Doodle Bug Dirt Bug DB30 and several Baja Blitz models that use similar hydraulic mounting geometry. It also fits many 97cc and 2.8HP engine minibikes and is compatible with multiple 79cc–212cc platforms when mounting points align.

• Compatible: Baja Doodle Bug DB30 and many Baja Blitz variants
• Engine range commonly compatible: 79cc to 212cc, including 97cc and 2.8HP options
• Not a direct bolt-on replacement for CT100U, Motovox, Mega Moto MMB80/105 without bracket changes
• Verify pump pitch and hose routing before installation

How does hydraulic braking compare to mechanical cable brakes?

Hydraulic systems provide stronger, more linear stopping power with lighter lever effort and smoother modulation than mechanical cables. Because fluid transfers force more efficiently, hydraulics reduce play and friction, making downhill or trail braking more controllable.

• Smoother lever feel and better modulation under load
• Higher braking force with less hand effort
• Reduced maintenance related to cable stretch and corrosion
• Requires correct bleeding and torque for leak-free performance

What installation and safety points should I be aware of?

Proper installation is critical for reliability and safety. Ensure mounting holes align with your frame, use the specified 51mm pump pitch, and tighten hydraulic connections to the manufacturer's recommendations—neither over- nor under-tightening. If your frame uses a different bracket layout, you may need to cut and relocate the original brake bracket or fabricate an adapter.

• Verify bracket alignment and hole spacing before drilling
• Bleed the system thoroughly to remove air for firm lever feel
• Check for leaks after first installation and road test at low speed
• Not directly compatible with CT100U, Mega Moto 105 without bracket modification

Who is this for?

This FVRITO hydraulic brake kit is aimed at minibike owners who want a reliable performance upgrade from mechanical rear brakes—particularly riders of Baja Doodle Bug DB30, Baja Blitz, and similar 97cc–212cc machines. It's well suited for trail riders, casual racers, and DIY mechanics comfortable measuring mount pitches and making minor bracket adjustments. If you need a plug-and-play replacement for uncommon frames (CT100U, Mega Moto MMB80/105), plan for bracket modification or consult a fabricator.