Shimano Saint BR-M820 Disc Brake Set J-Kit

Item number: 74935
Saint BR-M820 Disc Brake Set J-Kit - black/set (front+rear)
Saint BR-M820 Disc Brake Set J-Kit - black/set (front+rear)
Saint BR-M820 Disc Brake Set J-Kit - black/set (front+rear)
Saint BR-M820 Disc Brake Set J-Kit - black/set (front+rear)
Saint BR-M820 Disc Brake Set J-Kit - black/set (front+rear)
Saint BR-M820 Disc Brake Set J-Kit - black/set (front+rear)
Saint BR-M820 Disc Brake Set J-Kit - black/set (front+rear)
Saint BR-M820 Disc Brake Set J-Kit - black/set (front+rear)
Saint BR-M820 Disc Brake Set J-Kit - black/set (front+rear)
Saint BR-M820 Disc Brake Set J-Kit - black/set (front+rear)
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.91 / 5.00

Shimano Saint disc brake set BR-M820 - top performance for DH

The Shimano Saint BR-M820 disc brake set with its powerful 4-ceramic piston brake calipers is the ultimate Downhill and Gravity brake. Thanks to Ice Technologies, the system does not overheat and the braking performance remains constant even on the most difficult descents. One way bleeding also allows the calipers to be quickly and easily bled. On the brake lever side, the BL-M820-B Servo Wave, a design for better modulation of the braking force, and the I-Spec integration option for shifters and brake levers, score points.


Series: Saint M820
Application: Downhill
Type: hydraulic, 4 pistons
Actuation: mineral oil
Hose: SM-BH90-SBLS
Hose Length (Front/Rear): 1000 mm/1700 mm

Technical Information - Caliper:

Caliper Mount: post mount
Pistons: 4
Pads: sintered with cooling fins
Design: 2-piece
Calliper Material: Aluminium
Hose Connection: banjo

Technical Information - Lever:

Lever Length: 2-finger
Adjustment Options: reach adjust (no tools required), free stroke
Mount: clamp (split), I-Spec I (B)
Design: right (side-specific), left (side-specific)
Brake Lever Material: Aluminium
Brake Lever Housing Material: Aluminium
Hose Connection: straight


- powerful 4-ceramic piston brake caliper
- 4 opposed ceramic pistons
- IS mounting and PM non direct mounting possible with adapter
- simple, clean bleeding (funnel)
- Ice Tech pads with cooling fins
- recommended brake rotor: SM-RT99, SM-RT86
- painted brake caliper, stainless steel bolts (5 mm)
- ergonomic, anti-slip lever
- anodised lever, painted body, stainless steel clamp bolt
- suitable for I-Spec


Servo Wave
The Servo Wave brake lever takes up a lot of braking distance at the beginning of its movement so that the pads can be guided to the brake rotor with short lever travel. After the brake pads have been applied, the power transmission factor increases rapidly. The greater part of the lever travel is thus still available to increase the braking force and to modulated it more precisely.

Mounting system for the integration of shift and brake lever. It provides a tidy look, more space on the handlebars and light weight.
Note: The I-Spec brake levers have a new mount as of 2014 (version B). As of now, there is no compatibility to shifters with old I-Spec mounts. However, these can be made compatible with the new I-Spec brake levers using the new I-Spec adapters (SM-SL98-B for XTR, SM-SL78-B for XT and SLX, SM-SL82-B for Saint). There is no compatibility with I-Spec II or I-Spec EV.

One-Way Bleeding is designed to quickly and easily prevent air from entering the hydraulic system. Shimano has optimised the brake fluid flow path throughout the system to prevent air bubbles from being trapped in the system.
One way oil routing plus a funnel tool with mineral oil provides an easy and clean bleeding system.

Fading of the brake during prolonged uninterrupted operation, e.g. downhill, impairs braking performance. Shimano has introduced brake rotors and pads with Ice-Tech technology to create a cooling technology for consistently high braking performance. The brake rotor has a three-layer stainless steel sandwich structure on the outside encasing an aluminium core. It radiates heat better and reduces surface temperature from 400° C to 300° C, for example. The brake pads also have optional cooling fins. The design of the rotor in combination with the cooling fins results in a longer service life of the pads, less braking noise, less fading and lower weight.
XTR, Saint-, XT, SLX and ZEE callipers are combined with oversized ceramic pistons to achieve light weight, high rigidity and optimised heat dissipation. Oversized pistons transfer the hydraulic power directly to the brake pad. A ceramic material is used to avoid heat transfer and ensure constant, safe braking performance. This provides efficient brake force transmission without losses.

With J-Kit Shimano refers to the still unassembled delivery of its disc brake kits. This saves time during brake installation, especially if you want to run the brake line internally. The brake lever and brake calliper are not yet connected by the brake line. The enclosed brake line is already filled with oil and closed by a protective cap. Before installing the brake lever, remove the protective cap of the line and the lock on the brake lever.

Manufacturer Number:



- 2 x Shimano Saint BR-M820 + BL-M820-B disc brakes, front and rear
- 1 x Shimano SM-BH90-SBLS brake hose, 1000 mm (front)
- 1 x Shimano SM-BH90-SBLS brake hose, 1700 mm (rear)
- 2 x pairs Shimano brake pads
- 2 x inserts
- 4 x calliper bolts
- 2 x snap ring
- 2 x olives (assembled)
- ready for installation, filled, bleeding is recommended after installation

Order Together:

- TL-BH61 tool for insert installation
- Bleed Block Y-8FF19000


  • black/set (front+rear), in stock

Customer Reviews (9)


Customer Reviews (9)


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by Vitor hugo v.  on 02.06.2022
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by LORENZO B.  on 04.04.2022
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sono veramente ottimi modulabili e potenti top.

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by Mehmet T.  on 23.06.2020
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0 of 1 customers found this review helpful.

that's really worth your money

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