Upgraded Hydraulic Brake DB30 with CT100U Bracket - Mini Bike Rear

In this review of the Upgraded Hydraulic Brake DB30 with CT100U bracket, the bottom line is straightforward: this kit is aimed at DB30 mini bike owners who need a ready-to-fit hydraulic rear brake that can also be adapted to a Coleman CT100U frame. The review finds the kit delivers solid stopping power out of the box and includes a prefilled master cylinder, which saves time during installation, but installers should expect to bleed the system and address mounting on some frames. For those focused on a direct-fit rear hydraulic solution for DB30 bikes, this kit is a practical option.

Key Features

• 7/8 in handlebar compatibility: The lever and master cylinder are sized for standard 7/8 in left handlebars to match common mini bike controls.
• Included CT100U bracket: The kit ships with a CT100U hydraulic brake bracket so the DB30 brake can bolt to the Coleman CT100U frame without fabricating a custom mount.
• 48 in brake hose: The longer hose provides routing flexibility and allows fitting to frames with more distance between lever and caliper.
• Prefilled master cylinder: The master cylinder arrives filled with fluid which reduces initial setup steps, though bleeding may still be required for optimal performance.
• Complete caliper assembly: The package includes the brake caliper so users receive a full hydraulic rear brake kit rather than separate components.

Who It's For

This kit is best for owners of DB30 mini bikes that have a rear disc brake and who want a straightforward hydraulic upgrade with a supplied CT100U mounting bracket for Coleman CT100U frames. Mechanics and hobbyists who are comfortable bleeding brakes and performing minor adjustments will get the most reliable results.

It is less suitable for owners of Motovox or MMB80/105 minibikes unless they are prepared to make a new mounting bracket, as the product is not a direct replacement for those models and mounting hardware differences have produced mixed feedback.

Pros & Cons

Pros

• Works great for DB30 rear brake applications according to users, delivering dependable stopping performance.
• Supplies a CT100U bracket so fitting to Coleman CT100U frames is simplified and often bolt-on.
• Prefilled master cylinder and included caliper reduce the number of separate parts to source.
• Long 48 in hose offers flexible routing options for varied frame layouts.

Cons

• Mountability receives mixed feedback; some customers reported missing or incompatible brackets requiring fabrication.
• Master cylinder may require bleeding after installation to remove air and ensure firm lever feel.

Specifications

Product type	Mini bike hydraulic rear brake kit
Handlebar size	7/8 in left handlebars
Brake hose length	48 in
Includes	Master cylinder filled with fluid, brake caliper, 48 in hose, CT100U bracket kit
Designed fit	Direct fit for DB30 mini bikes with rear disc brake; bolts to Coleman CT100U with supplied bracket
Not direct replacement for	Motovox and MMB80/105 without new mounting bracket

Our Verdict

The Upgraded Hydraulic Brake DB30 with CT100U bracket is a sensible value for DB30 owners who need a complete rear hydraulic brake and want the convenience of a CT100U mounting kit for Coleman frames. Its included caliper, prefilled master cylinder, and long hose simplify installation, but buyers should be prepared to bleed the system and possibly fabricate mounts for noncompatible frames.

Frequently Asked Questions

Will this bolt directly to a Coleman CT100U frame?
Yes, the kit includes a CT100U hydraulic brake bracket that allows the DB30 brake to bolt onto the Coleman CT100U frame in most cases.

Is the master cylinder ready to use out of the box?
The master cylinder is filled with fluid on arrival, but it may need to be bled before first use to remove air and ensure proper lever feel.

Can this replace brakes on Motovox or MMB80/105 minibikes?
No, this kit is not a direct replacement for Motovox or MMB80/105 models and will require a new mounting bracket to work on those frames.