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Reed Valves and Petals

(12 products)
Carburetor and Intake Carburetors Intake Manifolds Reed Valves and Petals Carburetor Accessories Jets Fuel System Air filter Injection System
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Product type
Intake kit Reed petals Reed valve
Brand
Barikit Malossi Polini Stage6
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Stage6
Carbon Fiber Sheet 0,35mm Stage6 cut out
Article no.: S6-325001

Carbon Fiber Sheet 0,35mm Stage6 cut out

39,00 €
In stock
RRP
43,00 €
-9% Discount
Malossi
Reed Plates Malossi Carbon 100x100mm 0.4 (x2)
Article no.: M277366.E0

Reed Plates Malossi Carbon 100x100mm 0.4 (x2)

38,50 €
In stock
RRP
48,00 €
-20% Discount
Malossi
Reed Plates Malossi Carbon 100x100mm 0.35 (x2)
Article no.: M277366.D0

Reed Plates Malossi Carbon 100x100mm 0.35 (x2)

36,00 €
In stock
RRP
45,00 €
-20% Discount
Polini
Intake Kit Polini 23mm PHBG Piaggio APE 50ccm
Article no.: P215.0271

Intake Kit Polini 23mm PHBG Piaggio APE 50ccm

99,00 €
In stock
RRP
116,00 €
-15% Discount
Polini
Carbon Fiber Sheet Polini (110x110)
Article no.: P213.06_PLAQUE_CARBONE

Carbon Fiber Sheet Polini (110x110)

30,00 €
In stock
44,00 €
-32% Discount
Barikit
Carbon Fiber Sheet Barikit 0.35mm
Article no.: BAR-PLA-01

Carbon Fiber Sheet Barikit 0.35mm

16,00 €
In stock soon
Malossi
Carbon Fiber Sheets Malossi 0.30mm (100x100)
Article no.: M277366.C0

Carbon Fiber Sheets Malossi 0.30mm (100x100)

41,00 €
Currently not in stock
RRP
42,00 €
-2% Discount
Malossi
Reed Plates Malossi Karbonit 100x100mm 0.4 (x2)
Article no.: M277366.M0

Reed Plates Malossi Karbonit 100x100mm 0.4 (x2)

16,50 €
Currently not in stock
RRP
21,00 €
-21% Discount
Malossi
Reed Plates Malossi Karbonit 100x100mm 0.35 (x2)
Article no.: M277366.L0

Reed Plates Malossi Karbonit 100x100mm 0.35 (x2)

14,50 €
Currently not in stock
RRP
18,00 €
-19% Discount
Malossi
Reed Plates Malossi Karbonit 100x100mm 0.30 (x2)
Article no.: M277366.K0

Reed Plates Malossi Karbonit 100x100mm 0.30 (x2)

12,50 €
Currently not in stock
RRP
16,00 €
-22% Discount
Polini
Reed Valve Polini aluminium 152cc Vespa 125cc Primavera ET3
Article no.: P213.0054

Reed Valve Polini aluminium 152cc Vespa 125cc Primavera ET3

92,00 €
Currently not in stock
RRP
109,00 €
-16% Discount
Polini
Reed Valve for Intake Manifold Polini Vespa 50 Special / 125 Primavera / ET3
Article no.: P213.0012

Reed Valve for Intake Manifold Polini Vespa 50 Special / 125 Primavera / ET3

50,00 €
Currently not in stock
RRP
58,00 €
-14% Discount

Reed valve

The reed valve is a component found only on 2-stroke engines. It controls cylinder filling and extends the usable RPM range of the engine. Without a reed valve, engines would be weaker at low RPM and would deliver power much more abruptly.

Well-known brands such as Moto Tassinari, Stage6, Italkit, Polini, or Malossi offer high-quality reed valves for the most common models.

Performance improvement via reed valve

A reed valve can improve performance across the entire RPM range, as the cylinder is filled more efficiently and a higher flow rate is possible.

The material and thickness of the reed petals (steel, fiberglass, carbon, epoxy composite) also influence behavior at low or high RPM. As a general rule:

  • Thicker = stiffer = less torque, but possible gains at high RPM
  • Thinner = more flexible = better acceleration, but losses at high RPM

It is recommended to test different options and select the setup that best suits the vehicle.

Reed valve spacers are also available, allowing the crankcase volume to be increased.

Choosing the right reed valve

When setting up an engine, especially on 50cc scooters and gear bikes, the reed valve should match the cylinder kit. The more powerful the cylinder, the greater the flow capacity required from the reed valve.

Many manufacturers offer so-called “big valve” kits for tuned scooters such as Yamaha Aerox or Piaggio Zip, where the original reed valve is very small.

On geared motorbikes with Minarelli AM6 or Derbi engines, installing a larger reed valve often requires modification of the crankcase. Please take this into account.

In the motocross segment, Moto Tassinari offers V-Force reed valves, which are easy to install and provide improved flow. The thickness of the reed blades is already optimized for many common models (KTM SX, Yamaha YZ, Honda CR, etc.).

To simplify installation, complete intake kits are also available, including intake manifold, reed valve, and additional components.

Replacement reed petals for cost-effective repair

The reed valve can be replaced entirely, but this is often not necessary. The reed petals, or reed blades, move very quickly and are subject to high loads. They should be replaced regularly when they are no longer sealing properly.

A wide range of reed petals made of carbon, fiberglass, or metal is available.

There are also carbon reed sheets, allowing you to cut reed petals to a desired size, for example for less common models.

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