MTB 4 Piston Hydraulic Disc Brake M840

Left for front / Right for Rear

Oil/oil needle: mineral oil

lever side Bh59+ brake side special model
Weight: Front about 263g, Rear about 279g
Fit 51 mm IS ＆ 74mm post mounting

Options Metal and Cooling just brake type different

Cooling Brake Pad Available

We have cooling brake pad version can be choose, cooling brake pad was helpful for a long time brake use, cooling down faster than normal version, save brake life time and better performance

Cooling Connecter

Heat control is very important for stable performance, after using all-aluminum brake and heat sink pads , we even made a cooling fins for the tubing! This is a great invention. these fin will cooling the oil directly!

Original Full Metal Pads-same as XT pads

There are many benefits of full metal pads, greater braking force, stronger heat resistance, stable braking force regardless of sunny or rainy days,But because it is harder, it takes a period of running-in before it can work normally. At the beginning, the braking force is small which is normal, it will get bigger and bigger. And a slight braking sound is normal for metal pads.

4 Pistions

Upgrade 4 pistons caliper structure, it's make the brake pads more balanced

Cable Angle adjustable

Caliper cable connecter was rotatable, there is no repression like fixed cable

Pad Contact Point Adjustment

An advanced feature, you may have to spend hundreds of dollars to get it in other brands. but we made it in this price :)
Required small fingers strength, but big brake force, feel relaxed in the long downhill, Brake performance is not affected by weather changes, still stable, not easy to be affected by soil or rain.

ZTTO Cylinder Ratio and Brake Linearity

The brake equired strength is small, in the long downhill, fingers and arms are not easy to feel tired.Brake performance is not affected by weather changes, still stable, not easy to be affected by soil or rain.

Quickly Install Clamp

Left lever for front wheel. Right lever for rear wheel.

Left front brake hose length :800mm
Right rear brake hose length:1450mm
due to there is a part of hose inside the brake , so ±30mm is normal.

For 51 mm IS ＆ 74mm post mounting

Rotor: Caliper compatible φ 140/160/180/203mm rotor. calipers original fit for 160mm rotor, if you want use for 180mm or 203mm rotor, need use brake adapter(brake not include 180mm and 203mm adapter)
(Random screw color)

6 Color Brake Available