The 'red-lettered' seat-tube transfer is for 531 Professional (pka Special Lightweight, or 531SL) tubing. About 200g lighter than 531, but about 200g heavier than 753. Personally, I love the springiness of 531SL. Nice looking frame.
@rcary started
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The 'red-lettered' seat-tube transfer is for 531 Professional (pka Special Lightweight, or 531SL) tubing. About 200g lighter than 531, but about 200g heavier than 753. Personally, I love the springiness of 531SL. Nice looking frame.