Thanks Benny boy
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The chain stay length ,,, well without me going out to the garage

Here's the specs for mine the Pro racer XL 21"
74.5 Degree Head Tube Angle
14.25" Rear Triangle
11.5" BB Height
73 Degree Seat Mast
Euro BB
Integrated Head Tube
3/8" Axles
25.4mm Seat Post (use a 1-1/8" clamp)
V-Brake Mounts