Due to Material supply issues Rotobox production is now 8 to 10 weeks





This product requires professional installation by a qualified mechanic to ensure proper fitment, functionality, and safety.
Please consult with a certified professional before attempting installation.
This product has been known to take 6months when out of stock due to supply and demand
Qnium Radial Rear Thumb Brake Master Cylinder 12mm
The Radial Thumb Brake from Qnium is one of the most optimized thumb brakes on the market for the rear wheel. As a rider you have a lot more feeling in your thumb than in your foot. The Qnium Radial Thumb Brake makes it easier to operate the rear brake in a very controlled way. This high-end thumb brake is very popular in the Moto3 class. A brake lever is not an option on these bikes, as Moto3 riders are required to use the clutch lever. When you mount the Rear Master from Qnium on your bike, you can continue to use your foot brake.
Used in Moto2, Moto3, and in other FIM world championships. Drivers like Tony Arbolino and Dennis Foggia managed to win Grand Prix races with the revolutionary Qnium Thumb Brake. In 2019 Lorenzo Dalla Porta also used the Qnium’s Radial Thumb Brake, when he became World Champion Moto3.
Made in The Netherlands
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 radial thumb brake is optimized at all points to get the brake feeling to the highest possible level. The pivot point and the pivot point of the trade adjustment are both double bearings, which means that the friction around 25 bar pressure in both pivot points are eliminated. This results in less force with the thumb to get the same brake pressure.
More importantly, the feeling improves so that the rear brake is easier to control.
Awesome
Mark was exactly right, the quality of this product is remarkable. Exactly as promised!!!
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The higher pressure cap stopped my overflow from becoming pressurized and blowing out. I did a combustion gas test on the cooing system and it passed all 3 times, so it made since the factory cap was to low of a rating for serve duty.
The internet provides many options. Not all are good. HHR provides top notch customer service and the best parts available.
quick shipper
awesome customer service
I ordered Avio fiber glass fairing and all necessary brackets for 2023 Yamaha r1. HHR answered all my questions by email and later by phone. The staff I communicated with were knowledgeable, straightforward, helpful, and non-judgmental. I've had been using the products for more than a year, and I have no complaints and am quite happy with it. I've heard it's easy to installl, too, but I had someone else do it, so I can't say if that's true. The bodywork has cutouts for the tail light and headlights. Works great.
Best store to buy
Always willing to help and with patience
One fine piece of carbon fiber. Light as a feather. Bike rides like a whole different monster
Weight of a feather. Super flickable, launches and rolls are noticeably more aggressive
Good price, delivery and fit.
Great track bodywork kit. Everything fit well. Excellent quality
Communication was on point and the fella worked with me on my address.
The good stuff
Awesome
Excellent fit and finish. Easy installation with no modification required
Supreme oversuspenion for my BMW M1000XR COMPETITION
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