The Juin Tech GTP6 is the only listed option with six pistons; its cable-actuated hydraulic design is aimed at riders who want stronger braking while keeping mechanical cable levers. The other choices are two- or four-piston hydraulic sets, so they may suit buyers prioritizing a conventional hydraulic setup rather than a six-piston caliper. Check lever, hose, rotor, and frame compatibility before choosing any brake system.
| Product | Configuration | Best For |
|---|---|---|
| Juin Tech GTP6 | Six-piston cable-hydraulic caliper | Keeping mechanical cable levers |
| ZTZ hydraulic set | Four-piston hydraulic set | Buyers seeking ceramic pads |
| BUCKLOS hydraulic set | Hydraulic set; piston count not specified | Comparing a front/rear brake set |
| Z00M HB770 | Two-piston hydraulic set | Riders considering a simpler hydraulic option |
| BUCKLOS IIIPRO | Four-piston hydraulic set | Mechanical-to-hydraulic upgrade shoppers |
Juin Tech GTP6 Six-Piston Cable-Hydraulic Caliper
Best for: Riders who want a six-piston caliper but need to retain existing mechanical cable levers. The GTP6 uses a cable-actuated hydraulic mechanism, combining a mechanical lever connection with hydraulic action at the caliper. The listing says it requires no complex bleeding.
The caliper is CNC-machined from aluminum alloy, and the included pads are designed to dissipate heat. The product is specifically recommended for e-bikes, steep descents, and rugged gravel riding in its feature description. It is the most directly relevant choice for a search for six-piston MTB brakes.
Limitation: This is a caliper-oriented cable-hydraulic solution, not a conventional complete hydraulic lever-and-brake set. Confirm that your existing lever and brake setup are suitable before buying.
ZTZ Four-Piston Hydraulic Brake Set
Best for: Buyers who want a pre-bled hydraulic set with four-piston calipers and ceramic-metal composite pads. The listed front and rear hose lengths are 850 mm and 1550 mm. The product description also identifies use with mountain bikes, e-bikes, and fat bikes.
The listing highlights CNC-machined aluminum calipers and levers, and describes the pads as designed to reduce heat and noise. Choose this instead of a six-piston option if a four-piston hydraulic set better matches your intended setup.
Limitation: It is a four-piston system, not a six-piston brake. Check hose reach and mounting compatibility for your bike.
BUCKLOS Hydraulic Disc Brake Set
Best for: Shoppers comparing a hydraulic front-and-rear brake set. The product name lists an 800 mm front hose and a 1450 mm rear hose. The supplied product details do not specify piston count, pad material, or whether the set is pre-bled.
This option belongs on a shortlist only if its listed hose lengths and hydraulic format suit your bike. It is not identified in the provided information as a six-piston system, so do not select it on the assumption that it meets a six-piston requirement.
Limitation: The available product information is limited. Verify piston count and other specifications with the seller before purchase.
Z00M HB770 Two-Piston Hydraulic Set
Best for: Riders who are considering a two-piston hydraulic set rather than a high-piston-count brake. The product name specifies two pistons, with an 800 mm front hose and a 1450 mm rear hose.
This is a useful comparison point for shoppers deciding whether they specifically need six pistons or simply want a hydraulic brake set. Its configuration differs substantially from the GTP6 and the four-piston alternatives.
Limitation: This is explicitly a two-piston model, so it does not meet a six-piston requirement. The supplied details do not describe its pads or bleeding status.
BUCKLOS IIIPRO Four-Piston Hydraulic Brake
Best for: Riders looking for a four-piston hydraulic upgrade from mechanical brakes. The listing describes four-piston oil-pressure calipers and ceramic-metal brake pads. It gives hose lengths of 900 mm at the front and 1700 mm at the rear, with the left lever controlling the front and the right controlling the rear.
The product description says the pads are designed for heat dissipation and water resistance. Choose this over the GTP6 if you prefer a stated four-piston hydraulic set and its listed hose lengths fit your bike.
Limitation: It is a four-piston system rather than a six-piston model. Check lever orientation and hose routing before ordering.
Buying Guide: How To Choose MTB Brakes
Do you need six pistons?
Choose a six-piston brake when that piston count is a firm requirement. In this selection, the GTP6 is the only product explicitly identified as six-piston. The four-piston models are alternatives, not equivalent six-piston replacements; the Z00M HB770 is explicitly two-piston.
Should you choose cable-hydraulic or full hydraulic?
The GTP6 is cable-actuated hydraulic and is designed to retain mechanical cable levers. The ZTZ and BUCKLOS IIIPRO listings describe hydraulic brake sets. Confirm the control and installation requirements for your current bike before switching system types.
What hose length should you check?
Compare each listed hose length with the route from the lever to the caliper, allowing for your bike’s frame and handlebar layout. The listed front and rear lengths vary across these sets. Do not assume a hose will fit based on the brake’s piston count alone.
What else affects compatibility?
Verify caliper mounting, rotor fit, lever arrangement, and pad type for your bike. The provided product details do not give every compatibility specification, so confirm missing information before purchase. A matching piston count does not guarantee a complete installation fit.
Frequently Asked Questions
Which listed product is actually six-piston?
The Juin Tech GTP6 is the only product in this selection explicitly described as six-piston.
Are four-piston brakes the same as six-piston brakes?
No. They have different piston counts. The four-piston sets here are alternatives for shoppers who do not require a six-piston configuration.
Can the GTP6 work with mechanical cable levers?
Its description says the caliper uses a cable-actuated hydraulic mechanism and retains existing mechanical cable levers. Confirm suitability for your particular brake setup before buying.
Are any of these listed sets pre-bled?
The ZTZ set is described as pre-bled. The provided information does not state that the other complete brake sets are pre-bled.
What should I verify before ordering?
Check piston count, hose lengths, lever orientation, caliper mounting, rotor fit, and whether the brake matches your current control system.