These are 1 1 /8” based on the Mike Miranda/Tommy Brackens Era (Pro-X) with the Oval Down Tube, Redline Style Headtube Gusset, V Brakes – 27.2 post, 28.6 clamp – Reynolds 525 / 725 tubing  – it comes in modern Pro XL 21.25″ or Pro XXL 21.75″ toptube sizes, so you can actually ride it! IT LOOKS LIKE A 1984 TORKER BUT RIDES LIKE A MODERN BIKE!

Modern  Geometry:
Pro XL 21.25″ TT, 15.25″ C/S, 11.625″ BB Height , 74.5º HA

Details:

• Pro-X gusset behind BB.
• Slightly Ovalised Downtube
• 1 1/8″ threadedless fork.
• 3/8″ (10mm) dropouts.
• 27.2mm seat post.
• 28.6mm seatclamp
• V-brake mounts