Moto Tassinari


Welcome to Moto Tassinari

Moto Tassinari is the manufacturer of the AIR4ORCE tunable intake system, as well as the VForce3 and VForce4 reed valve systems. The AIR4ORCE intake system is a larger volume air boot that replaces the stock air boot on modern four-stroke off-road motorcycles. The power delivery is tunable via interchangeable velocity stacks that are included with the kit. The VForce3 and VForce4 reed valve system is complete replacement for stock reed valves. The unique VForce design doubles the reed-tip surface which in turn offers numerous advantages such as, significant horsepower gains, crisper throttle response, improved acceleration, greater efficiency and durability.

Motocross Action VForce3 Product Test

Post 19 May 2010 By Zak In News

Motocross Action magazine tests the Moto Tassinari VForce3 Reed Valve System for the Yamaha YZ250 in July 2010 issue

It works. No drama. No doubts. It is a must have. -5 star rating from MXA

The VForce3 Reed Valve System for the Yamaha YZ250 is featured in the July 2010 of Motocross Action. The product test can be downloaded here, or you can read it below.

WHAT STANDS OUT? Here’s a list of things that stand out with the Moto Tassinari YZ250 VForce3.

(1) Features. The Moto Tassinari VForce3 has twice as many reeds as a stock reed valve. It looks like two reed valves in one cage. The benefit of doubling the number of reeds is that each individual reed only has to open half as far to get the same amount of fuel to flow. Given the fact that reed petals open and close 133 times per second, the less they move the longer they last. Additionally, the VForce3 reed cage is a modular design that allows each piece to be crafted to do a single job. This is most noticeable at the front of the block where the reed petal tips are recessed into the cage.

(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.

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Who is Moto Tassinari?

Moto Tassinari is the manufacturer of the AIR4ORCE tunable intake system (four-stroke) and the VForce3 & 4 reed valve systems (two-stroke).

Upcoming Product Releases

AIR4ORCE // KTM 250SX-F Estimated ship date: NOW
AIR4ORCE // KTM 350SX-F Estimated ship date: NOW
AIR4ORCE // KAWASAKI KX450F Estimated ship date: NOW

Contact Information

Moto Tassinari
4 Technology Drive
West Lebanon, NH 03784

Tel: (603) 298-6646
Fax: (603) 298-6656

We sponsor

  • Team Honda Muscle Milk
  • Factory Kawasaki USA
  • Factory Kawasaki Europe
  • Pro Circuit (450F)
  • GEICO/Honda
  • TLD/Lucas Oil/Honda
  • BTO Sports/BBMX
  • Rockstar Suzuki Lites
  • Star Valli Yamaha
  • OHLINS/Langston/KTM
  • JDR Motorsports
  • Munn Racing
  • Monster Energy Yamaha Bike It (MX2)
  • And many more…