(2) Petals. The VForce3 uses symmetrical reed petals, which means that one petal fits all the cage locations (no need to worry about long and short reed petals). Additionally, the VForce3 snaps together—no screws. Replacement petals are sold for $59.95 (we get a full year’s racing out of a set of Moto Tassinari reed petals).
(3) Reed cage. The VForce3 cage is molded from composite resin, and there is a curved airfoil shape at the reed tips that increases fuel velocity at the intake tract.
(4) Jetting. We did not have to rejet our 2010 Yamaha YZ250, but if we added an aftermarket pipe, ported the cylinder, increased the compression or ran old gas, it would ping.
(5) Power. There is no reason to beat around the bush: The Moto Tassinari reed works on the YZ250 twostroke. It increases low-to-mid power, which allows the rider to get on top of each gear sooner, resulting in more power in the upper ranges. It picks up cleaner, accelerates harder and carries its power farther into the middle.
WHAT’S THE SQUAWK? No hassles with its installation or performance. It was a bolt-on operation (although if you take the time to remove the subframe you will find it easier to install).
MXA RATING/ FIVE of FIVE STARS This is the reed valve that Team Yamaha used when they raced YZ250s (and the reed that comes stock in every KTM two-stroke). It works. No drama. No doubts. It is a must-have.