i have some 250s made by cat cams in begium...billet...
Inlet
Clearance 0.2mm
Valve Lift 8.80mm
Duration @0.1mm 250deg
Duration @1.0mm 232deg
Lift@TDC Without clearance 1.4mm
Exhaust 0.2mm
Clearance 8.80mm
Valve Lift 8.80mm
Duration @0.1mm 250deg
Duration @1.0mm 232deg
Lift@TDC Without clearance 1.40mm....kinda strange to me but the duration @ 1mm is the same as hks 272s
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the way i see it,if you combine two words,like bull and shit...well,you know the rest