TUNNEL FRAME Vinnie Sammon signature frame featuring heat–treated, double butted (with internal gussets) Mugen tubing (20% stronger than 4130 chromoly) for the top–tube and down–tube. The rest of the tubing is heat–treated 4130 chromoly. External down–tube gusset. The chain–stays have a wishbone design and start off ovalized then blend into tapered round tubing. The seat–stays taper and along with the chain–stays are designed to fit wide tires. The seat–tube is externally butted and ovalizes towards the bottom and works with a wedge post only (included). Removable brake mounts thread into the seat–stays. Uses an Integrated headset (11/8") and a MID bottom bracket.
NOTE: You must use a "Wedge" seat post for this frame. There is no need for a seat clamp with this bad boy.
Available in 20.5" top tube and 21" top tube. 74.5 Degree head tube angle. 71 Degree seat tube angle. 13.5" chainstay length. 8.75" standover height and 11.75" bottom bracket height.
4lbs 10oz (20.5" model)