My Bike Friday is the heavy rider option.. it too offers a triangle, to pass a lock through..

Abus Bordo folding link lock, And a steel locking chain, Also Abus,
the chain holds it up better .. since there is no kickstand..

Brompton (also frame triangle). I have an armored cable lock, It stows in the touring bag.. or just over the M bars.

New BF Tikit, it got the steel chain over the HB, toe-strap keeps it from swinging .


[Bikes left loose get nicked, (street druggies) but no one has a wholesale bike theft ring.]






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