About Pressure Washers for Bikes
For bikes, look for 20–50 bar at a high flow rate — the Worx Hydroshot, Bosch Fontus, Karcher OC 3 and Muc-Off Pressure Washer are all purpose-designed.
Mains washers (Karcher K2/K3) work too if you set them to a wide fan and stay 30 cm+ from hubs, headset bearings and BB shells. Never aim straight at seals.
Pair with a bike-specific cleaner (Muc-Off Nano Tech, Fenwick's FS-1) for chain-friendly degreasing.