Brake Master Cylinder HammerHead 80T TrailMaster MID 6.000.305 XRS XRX Go Kart Brake Master Cylinder

Fit perfectly and works great! Great price and exactly what we were looking for. So far so good, and not leaking.

Fits perfect.

Product was easy to install and worked like a charm. Note that there is no instructions included and no video on how to install so you must be familiar with doing so.

Fit the go cart perfectly. No modifications needed. Bled the system and we have brakes again!

Its a good brake master. When I first installed it, a puddle of fluid would appear underneath. I traced it to the resevoir seal. I removed the resevoir and found the rubber seal undernath was pushed in too far in one spot and looked like a finger pressed too hard perhaps during assembly. I removed the rubber seal and re-seated it and reassembled. No more leak so far! Brakes feel firm.

Perfect replacement for the Black Widow 3171 go kart. Easy swap. Didn't not take long to bleed the brakes afterward.

Didn’t work. Did not draw fluid in. Must have put the wrong spring in front of the factory as it did not extend enough to clear

Very nice part

well made nice long stroke

back in action for the gkids