Absolutely. For high-power, 60V scooters like the SUPRA, TK-RS, and TK-XS that are capable of high speeds and often used for heavy-load or off-road riding, a 4-piston brake is a critical upgrade. It provides the significantly stronger stopping power needed to safely and effectively control these heavy, fast machines.

The widened opening allows for a more powerful and even distribution of clamping force across the larger, thicker brake pads. This results in more responsive braking and better modulation compared to standard, narrower 2-piston designs, giving you superior control.

Yes, it's a huge safety benefit, especially if you ride aggressively, tackle steep hills, or weigh more. Standard pads can overheat and lose braking power (brake fade) on long descents. These high-temperature pads ensure your stopping power remains consistent and reliable even under extreme heat, preventing dangerous fade.

No, it isn't mandatory — 140x2.3mm is simply the size this caliper was designed around, so it's the best match and what we recommend for full performance. Other rotors can still be fitted, but a thinner disc leaves more clearance in the caliper, which gives a softer lever feel and noticeably weaker bite. If you want the strongest, most consistent braking this kit is capable of, pair it with 140x2.3mm heavy-duty rotors.

A waterproof sensor is vital for an e-scooter that might encounter rain, puddles, or mud. It ensures the critical safety function of cutting motor power upon braking remains reliable and does not fail due to moisture or dirt ingress, protecting both you and the scooter's electrical system.