est-900

Hi, I’ve got 2 x Decathlon Rockrider 420wh batteries for sale. Both used with a Rockrider E-ST520 but compatible with the E-ST900 and other Rockrider models I think. They’ve done very few hours and hold a good charge. No less that when new, as far as I can tell. My bike was stolen and so...

I was thinking of upgrading the front brake on my EST-900 to a 4 piston caliper. I wonder if anyone has done this? I notice the existing rotor is 1.8mm thick. Tektro 4 piston calipers specify 2.3mm rotor. Is there an issue with changing to a thicker rotor? I was looking at moving to Tektro...