Shimano Deore XT BL-M8100 + BR-M8100 J-Kit I-Spec EV brake

The new Shimano brakes are part of the updated Deore XT M8100 group and represent a new standard in terms of modulation and performance. Thanks to the new I-Spec EV system, the lever has 2 support points, which guarantees superior stability, while the main function allows lateral and angular adjustment of the gear shifter which is fixed with a single screw, thus keeping the handlebar in perfect order.

The lever design follows the lines of the XTR and offers reach and free stroke adjustment for personalized braking. Thanks to Servo Wave technology, faster engagement and unparalleled braking power are also achieved.

Brake lever characteristics

• Two contact points for superior stability and refined ergonomics.
• A cleaner and more functional cockpit organization.
• 10% more responsive than M8000, even in high temperature conditions.
• Faster brake response with reduced free play.
• Reach adjustment without tools.
• Free Stroke adjustment.
• Intuitive and versatile braking.
• Clamp: Open Clamp Band.
• Lever size: 2 fingers.
• Caliper compatibility: BR-M8100, BR-M8120.
• Servo Wave mechanism.
• Lever and caliper: J-Kit.

Brake caliper characteristics

• Number of pistons: 2.
• Faster piston retraction.
• Superior modulation.
• Fixing screw size: 5 mm.
• Fitting: Banjo.
• Mounting Type: Post Mount.
• Fluid: Shimano mineral oil.
• Resin pads without fin.
• Lever compatibility: BL-M8100, RT-MT800.
• Cooling: Ice Tech.

Technologies

Ice Technologies

Incorrect configuration of the disc brake rotor and pads when braking on a long descent, for example, has a negative impact on brake performance. Shimano has adopted the Ice Technologies disc brake rotor and pads to obtain a cooling technology capable of guaranteeing constant performance. The coated disc brake rotor blade, featuring 3-layer sandwich construction of stainless steel, aluminum and stainless steel, ensures better heat dispersion (400˚C to 300˚C surface temperature). The cooling fin for the pad guarantees less wear, less noise, less loss of efficiency and greater lightness.

One Way Bleeding

The “One Way Bleeding” function was developed to ensure the quick and easy prevention of air infiltration in Shimano hydraulic systems. They have optimized the entire oil circuit in the system to prevent the presence of air bubbles inside it. The one-way oil circuit, combined with a mineral oil funnel tool, ensures an easy and clean draining system.

I-Spec EV

I-Spec EV creates a clean, optimized cockpit that allows for greater focus and greater comfort for a wide range of riders.

Advantages and benefits

• The wider adjustment range allows cyclists of different styles, preferences and body sizes to find the optimal lever and control position.
• Ergonomic design, quicker lever access and smooth operation improve riding comfort and concentration.

I-Spec EV increases brake lever stiffness by moving the clamp inward to create an additional contact point between the handlebar and lever. This additional support greatly increases bike control and brake response, while maintaining a gap between the clamp and the support point for other accessories to be mounted on the handlebars.

Servo Wave Action

When you operate the Servowave brake lever, the initial cable return is quicker, so a small movement of the lever is sufficient to bring the pads into contact with the brake disc. So the power multiplication factor increases rapidly upon contact, so more lever travel is used to apply more force with higher levels of braking control.

Command configuration

• Right lever: rear brake (1700 mm sheath)
• Left lever: front brake (1000 mm sheath)