After a wait of about 6 weeks to put the Thruxton through its paces on roads not contaminated with salt, I got out this afternoon to see how she runs with the big valve head (+2mm inlet, +1.5mm exhaust) and high lift camshafts. I can report that the bike goes like a train. Several times during the ride the rev limited was tested, simply because the motor revs so freely at the top end. I suppose that's not surprising given that the power curve is still rising when the rev limiter cuts in (see dyno sheet). The motor is so smooth throughout the rev range. There is no discernable dip in the power delivery anywhere.