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Leisure Lakes Bikes£94.99Visit shop Shimano Deore M4100/MT420 Bled Brake Lever/Post Mount 4 pot Caliper Black
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The Shimano Deore MT420LR is designed for mountain bikers and trail riders seeking reliable, high-performance stopping power through a robust 4-piston hydraulic system. This brake kit offers excellent control and consistent modulation for technical descents and varied terrain, though users should note that rotors and mounting adapters must be purchased separately to complete the installation.
| Series | Deore |
|---|---|
| Model Part Number | MT420LR |
| Brand | Shimano |
No, this kit includes only the brake lever, hose, and pre-bled caliper. You will need to purchase the appropriate rotor size and frame-specific adapter separately.
No, you must only use Shimano genuine mineral oil. Using DOT fluid will damage the internal seals and void your warranty.
The system is compatible with rotors up to 203mm.
It is compatible with I-Spec-EV shifters. If you have an older shifter type, you may need a separate bar-mount clamp.
Pad wear depends on riding conditions, but you should inspect them periodically and replace them once the friction material reaches less than 0.5mm in thickness.
The system likely contains air bubbles and requires a proper bleed using Shimano mineral oil.
Clean the rotor with isopropyl alcohol and check the resin pads for signs of contamination or uneven wear.
Re-align the caliper by loosening the mounting bolts, squeezing the brake lever firmly, and re-tightening the bolts.
This kit arrives pre-bled with 1700mm of hose, intended for rear-wheel applications. Installation requires basic mechanical knowledge, specifically for cable routing and caliper alignment. Because the system is pre-bled, it is ready for immediate mounting; however, if you choose to trim the hose for a cleaner look, you must use the included spare hardware and perform a hydraulic bleed. The brake is compatible with standard Shimano resin pads. To ensure longevity, keep the rotor surfaces clean of oils or debris, and periodically inspect pad wear to prevent metal-on-metal contact with your rotors.
