SouthSoundRider
New member
I thought I better mention this as I don't hear about rear brakes failing on Street Motorcycles often.
When riding earlier this week I couldn't figure out why there was suddenly so much play in the rear brake pedal. Yamaha OEM Part # 5SL-27222-00-00 failed, i.e. broke. It's called the "Joint" and listed as Reference #14 under the Rear Master Cylinder category of any Yamaha OEM Parts website vendor.
I don't stomp on the rear brake and use both front and rear brakes and I would describe my use of brakes as conservative. My guess is that there is a manufacturing defect in the part, likely old fashioned inferior aluminum/alloy. It failed, as you can guess, at it's weakest point, where the Pin (ref # 22 in the diagram) inserts into the round hole to connect the rear brake lever to the master cylinder.
It was about $40 to replace all the parts I left on a street somewhere in Oregon! That's cheap compared to your life though........
When riding earlier this week I couldn't figure out why there was suddenly so much play in the rear brake pedal. Yamaha OEM Part # 5SL-27222-00-00 failed, i.e. broke. It's called the "Joint" and listed as Reference #14 under the Rear Master Cylinder category of any Yamaha OEM Parts website vendor.
I don't stomp on the rear brake and use both front and rear brakes and I would describe my use of brakes as conservative. My guess is that there is a manufacturing defect in the part, likely old fashioned inferior aluminum/alloy. It failed, as you can guess, at it's weakest point, where the Pin (ref # 22 in the diagram) inserts into the round hole to connect the rear brake lever to the master cylinder.
It was about $40 to replace all the parts I left on a street somewhere in Oregon! That's cheap compared to your life though........