Ambiente Bikes Prospero 24" BMX with Southforks

Ambiente Bikes Prospero Frame Set – Details

New Ambiente Bikes Prospero 24″ cruiser frame and matching Ambiente Bikes Southforks. Colour is clean white. This frame set has never been built up although it does have some minor marks such as on the chain stay as show in the photo. Similar one on the top tube near the Prospero decal. Would be considered shop wear in the old school BMX language.

I had these custom made a number of years ago before twin top tube frames experienced a renewal of interest. These are the ones I have left over and time to make some room for other things.

Full chromoly tubing, dropouts and gussets, a machined integrated head tube and mid sized bottom bracket. Cable guides allow the use of single or dual cables for the seat stay mounted 990 brakes. Head tube is also drilled for mounting the brake tabs. These are included with the frame, as are new bearings for the mid-bottom bottom bracket. Sorry, don’t have any headset bearings left…

These were built by one of the best bike welders in Australia and everyone comments on the quality of his work. Also then powder coated by one of the best in the business in Australia. Most old school people would know of them both!

Prospero frame specifications are:

all tubes 100% US made, heat treated, aircraft grade, seamless 4130 chromoly
top tube length 546.1mm (21.5″)
chainstay length 388.6mm – 401.3mm (15.3″ – 15.8″)
bottom bracket height 298.5mm (11.75″)
seat tube length 255mm (10″)
head angle 73 degrees
seat angle 70.5 degrees
weight 2.85kg (6lb 4oz)
dropouts 4.77mm (3/16th”) laser cut 4130 chomoly for 14mm axles (use step down washers for 3/8th axles)
integrated head tube using a standard Campy type headset
mid bottom bracket using a standard mid bottom bracket kit for 19mm or 22mm spindles
990 or u-brake mounts on the seat stay

Southfork fork specifications are: