Billed by Ridley as an all-road bike, it statements that the Grifn can perform it all. The geometry is racy for an endurance bike but still lets you fit 40mm tyres having a 1x groupset, and 38mm rubber with a double chainset setup.  Adjustable Seat: Certainly (height adjustable and entrance/back adjustable) Why We Find it irresistible Beginners ne