Upgraded Hydraulic Brake DB30 with CT100U Bracket - Rear Disc Fit

In this review of the Upgraded Hydraulic Brake DB30 with CT100U Hydraulic Brake Bracket, the bottom line is simple: this kit is for owners who need a ready-made hydraulic rear brake solution that fits DB30 mini bikes and can be adapted to a Coleman CT100U frame. The package includes a 7/8' left handlebar master cylinder, a 48' brake hose, a caliper with two pads and a 180mm disc, plus a CT100U bracket to bolt the system to the CT100U frame. It arrives mostly assembled but expect to bleed the master cylinder and confirm bracket fitment before first ride.

Key Features

• Direct rear disc fit for DB30: Designed to replace or upgrade the rear disc brake on DB30 mini bikes without major frame changes, providing an immediate braking upgrade.
• CT100U bracket included: The supplied CT100U Hydraulic Brake Bracket allows the kit to bolt onto a Fits For Coleman CT100U frame, reducing the need to fabricate a mount for that model.
• Complete master cylinder assembly: The 7/8' left handlebar master cylinder comes prefilled, giving riders a near-ready install that only needs bleeding and final adjustment.
• Long brake hose: The 48' brake hose provides generous routing length for mini bike frames and helps avoid tight bends that could impede performance.
• 180mm brake disc and pads: The included 180mm disc and two brake pads deliver a clearly defined contact surface and braking area sized for mini bike rear applications.
• Hardware included: Six flange screws and the bracket kit are provided so buyers have the basic hardware needed for installation on compatible frames.

Who It's For

This kit is best for DB30 mini bike owners who want a factory-style hydraulic rear brake replacement or upgrade and for CT100U riders who want the DB30 hydraulic hardware to bolt to their frame using the included bracket. Mechanics and hobbyists who are comfortable bleeding brakes and checking fitment will find the kit convenient and mostly complete.

It is not ideal for owners of Motovox or MMB80/105 minibikes unless they plan to fabricate a new mounting bracket, since the product is not a direct replacement for those models. Casual riders who want a guaranteed bolt-on fit across many minibike brands should look for model-specific kits instead.

Pros & Cons

Pros

• Works great for customers who successfully mount it to DB30 or CT100U frames.
• Includes a CT100U hydraulic brake bracket to save fabrication time for that frame.
• Comes with a long 48' hose and a 180mm disc for flexible routing and solid braking area.

Cons

• Mountability receives mixed feedback; some customers report missing or incompatible mounting hardware with other minibike makes.
• Master cylinder may require bleeding before first use, so additional setup is needed.

Specifications

Our Verdict

The Upgraded Hydraulic Brake DB30 with CT100U bracket is a practical, value-oriented upgrade for DB30 owners and CT100U riders who need a hydraulic rear brake that bolts on with minimal fabrication. Its included 48' hose, 180mm disc and bracket make it a mostly complete package, but buyers should be prepared to bleed the master cylinder and address mountability on non-supported frames.

Frequently Asked Questions

Will this bolt directly to a Coleman CT100U?
Yes, the kit includes a CT100U Hydraulic Brake Bracket so it can bolt onto a Fits For Coleman CT100U frame.

Does the kit fit Motovox or MMB80/105 without modification?
No, this brake is not a direct replacement for those models and requires a new mounting bracket to work.

Does the master cylinder come filled?
The master cylinder is filled with fluid from the factory but may require bleeding before first use.