It has a +6, My builder figures somewhere in the 80's, I way exactly 191 and its a clay sand mix and they keep it pretty moist. At test n tune today i put them on just to move the bike around while i was using the 10 paddle i normaly run on a different bike. At one point just out of curiosity i made a run with them and turned my best time ever with that motor. With the 10 paddles i was running constant 5.2's and with these i ran a 4.92. Should i start questioning the size of my motor.