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Qnium Radial Left Hand Brake Master Cylinder 12mm piston

Left Hand Brake

Qnium Radial Rear Left Hand Brake Master Cylinder 12mm

Many riders like to control the rear brake with their left hand. The Left Hand Brake gives riders optimum control over their rear brakes. The material use of the Qnium Radial Left Hand Brake is of sublime quality. Your fingers will give you a lot more feeling by braking than your foot. Qnium’s Left Hand Brake can help when you’re looking for fast lap times on the circuits. The brake feels better with your hand than with your feet. The brake can be operated with very little force. You will experience more control in the braking phase and when turning in the middle of the corner. With this radial left hand brake brake it is also possible to brake, when you steer your bike to the right and having a lean angle. For riders who want to keep the pedal brake as well as the Left Hand Brake, Qnium has also created rear brake master cylinders to compliment this setup, available with an extra banjo connection for a pass through design.

These high quality brake levers can be placed both above and below the lever of the clutch.

Used in Moto2, Moto3, and in other FIM world championships. Top Moto2 riders like Bo Bendsneyder, Thomas Luthi and Marcel Schrotter are using the Qnium Radial Left Hand Brake to get the best out of their races.

Made in Netherlands
Limited Supply: only 1 remaining
Availability: On-hand inventory ships within 24 hours. No Returns on Clearance items all sales are final
Pricing: $742.00



Many riders like to control the rear brake with their left hand. In your fingers you have a lot more feeling than in your foot. In that case you can opt for the Qnium Radial Thumb Brake.

This left hand brake is optimized at all points to get the brake feeling to the highest possible level. The lever pivot point and pushrod pivot point of the trade adjustment are both with double bearings, which means that the friction around 25 bar pressure in both pivot points are eliminated. This results in less pull with the hand to get the same brake pressure. For example, the pivoting points have double bearings, which eliminates friction at high pressure. As a result, less force is required to achieve the same brake pressure. 

More importantly, the feeling improves so that the rear brake is easier to control.

Technical Specifications:
Handlebar clamp: 22mm
Adjustable lever length: 115mm – 142mm
Adjustable Folding lever with rotary 'Q knob'
Material: Aluminum 6082, High gloss anodized.
Color: Titanium, Platinum, Orange
Piston: 12mm – Aluminum 7075
Double Bearing Lever Pivot Point
Pivot: Pushrod pivot point double bearing
Brake oil DOT 4.0 or 5.1
15mL Reservoir & Reservoir hose included,  brake oil resistant
Banjo: Pro-Bolt Titanium, Race Spec
Bolts: Pro-bolt Titanium, Race Spec
Venting nipple: Pro-bolt Titanium
Custom seal design for better braking feel.
*Custom Brake line from Left Hand Brake to Rear master near foot will be required, Highly recommend to get the Qnium Rear Brake Master Cylinder for ability to use rear foot brake as well and compliment overall feel of the rear brake.




Shipping Information

  • Item Requires Shipping
  • 3.0 lbs.
  • W7.0000” x H5.0000” x L10.0000”

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