New From Inspyre Bicycles

Prototype Frame


French brand Inspyre BMX sent us over some info on their latest project, the new Prototype Race Frame

We work since last August on this project. First we discuss a lot with rider, Jeremy Rencurel and Simon Duchène, they give us lot informations about what they want, then we designed on 2D and 3D. We would like a modern frame and we spend a lot of time on tubing shape.
Our Toptube and Downtube are hydroformed and tapered. The Toptube and Downtube wrap up the head tube to give a lot of stiffness on the front. The tear drop seat tube is also wrap up the bottom bracket (Press Fit BB86 ) to have maximum stiffness at each pedal strokes. Chain stays are 32mm wide and seat tube are triangular to have a reactive and stiff rear triangle. Dropouts integrated chaintensioners and will be compatible in 10mm/15mm and 20mm.
It’s still a prototype but this frame should be in stock in September.


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