Origin-8 DownTube Shifter Adapter - 28.6/31.8mm Black

Available from Good Weather Bicycle when we last checked. Sold from the shop’s own store; the price there is the one that counts.

Downtube shifters are the most durable, most repairable, least fussy way to shift a bike, and plenty of good frames were built without the bosses to mount them. This machined alloy clamp adds them. Great for a fixed gear conversion getting gears back, or a modern frame you want to run friction shifting on. Perfect for mounting downtube shifters on bikes with no braze-ons Machined alloy construction Fits frame tubes 28.6mm (1-1/8") to 31.8mm (1-1/4") with shim Black anodized finish Specifications