Are they pre bleed already?

Yes they are pre-bled. you can install and use it directly when you receive it.

Which brake fluid is suitable for this hydraulic brake?

Mineral oil is more suitable.DOT oil may ruin the seals and destroy the brakes.

What is the braking direction of this brake? And the length of the cable?

The hydraulic brake is left front 800mm and right rear 1450mm.

What rotor size do you order with these?

The brake is compatible with 160mm rotor by default, and an adapter is required for the 180mm 203mm rotor.

What items are included in this brake packaging?

If you are ordering a pair,you will get : 2 pcs hydraulic brake handles+ 2 pcs twin piston calipers +2 pcs adapter+ 4 pcs screw(When selecting, please note whether it is a pair or a single side)

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BUCKLOS MTB Hydraulic Disc Brakes, Mountain Bike Left Front 800mm Right Rear 1450mm Hydraulic Brake Set Aluminum Alloy Levers with Calipers PM/is Adapter Fit EBike/Fat Bike

BUCKLOS MTB Hydraulic Disc Brakes, Mountain Bike Left Front 800mm Right Rear 1450mm Hydraulic Brake Set Aluminum Alloy Levers with Calipers PM/is Adapter Fit EBike/Fat Bike

Product ID: 206030100

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Details

Material
6061 aluminum
Brand
BUCKLOS
Color
Style
American
Product Dimensions
29.53"L x

🛑Pre-bled Hydraulic System for Instant Stopping Power

⚙️6061 T6 Aluminum Alloy Levers

⛓️Dual Piston Full Oil Pulling Calipers

Description

🛠️ Upgrade Your Ride, Stop Like a Pro!

PLUG PLAY INSTALLATION - Pre-bled mineral oil system means zero mess and quick setup—ride faster, install faster.
WHISPER QUIET PERFORMANCE - Resin-metal composite pads protect rotors and keep your ride noise-free and smooth.
UNIVERSAL FIT FOR YOUR RIDE - Compatible with e-bikes, fat bikes, BMX, and more—one set to rule them all.
ERGONOMIC LEFT FRONT RIGHT REAR SETUP - Designed for intuitive braking habits, optimized for American riders.
EFFORTLESS CONTROL WITH TWO FINGER BRAKING - Massive stopping power that lets you dominate trails with minimal effort.

The BUCKLOS MTB Hydraulic Disc Brake Set features durable 6061 T6 aluminum alloy levers and dual piston calipers with a pre-bled hydraulic system for superior stopping power. Designed for easy installation and broad compatibility with e-bikes, fat bikes, and BMX, it delivers quiet, efficient braking with an ergonomic left-front/right-rear setup tailored for trail and urban riders alike.

Specifications

Material	6061 aluminum alloy, T6 quenching, Resin
Brand	BUCKLOS
Color	Front+Rear-Black
Product Dimensions	29.53"L x 29.53"W
Exterior Finish	Aluminum
Special Feature	Easy to Install
Included Components	Screw
Item Weight	620 Grams
Metal Type	Aluminum
Handle Material	Aluminum, Resin
Hand Orientation	Ambidextrous
Customer Package Type	Standard Packaging
Unit Count	1.0 Count
Number of Items	1
Manufacturer	BUCKLOS
Item Depth	3 inches
Handle Attachment Mechanism	Clamp
UPC	190726836998
Item Package Dimensions L x W x H	8.43 x 8.31 x 2.09 inches
Package Weight	0.72 Kilograms
Item Dimensions LxWxH	29.53 x 29.53 x 29.53 inches
Brand Name	BUCKLOS
Part Number	700553A7
Size	Front+Rear

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