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Reed Valves and Petals

(28 products)
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Product type
Intake kit Reed petals Reed valve
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Doppler Easyboost Italkit MotoForce MotoForce Racing Polini Stage6 Standard Parts
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MotoForce
Reed Valve MotoForce Derbi
Article no.: MF35.19301

Reed Valve MotoForce Derbi

9,60 €
In stock
MotoForce
Reed Valve Piaggio / Gilera / Vespa / Derbi / Aprilia
Article no.: MF35.14000

Reed Valve Piaggio / Gilera / Vespa / Derbi / Aprilia

13,00 €
In stock
MotoForce
Reed Valve Motoforce Peugeot vertical / Honda
Article no.: MF35.17500

Reed Valve Motoforce Peugeot vertical / Honda

8,00 €
In stock
RRP
19,00 €
-58% Discount
Sale
MotoForce
Reed Valve MotoForce AM6
Article no.: MF35.18805

Reed Valve MotoForce AM6

9,00 €
In stock
RRP
16,50 €
-45% Discount
Sale
Stage6
Intake Kit Stage6 MK2 24/35mm PHBG / PWK Piaggio
Article no.: S6-3214000

Intake Kit Stage6 MK2 24/35mm PHBG / PWK Piaggio

105,00 €
In stock
RRP
116,00 €
-9% Discount
Stage6
Reed Valve Stage6 Viton Peugeot horizontal
Article no.: S6-3219078/VT
1

Reed Valve Stage6 Viton Peugeot horizontal

64,50 €
In stock
RRP
71,00 €
-9% Discount
Stage6
Intake Kit Stage6 MK2 Peugeot vertical
Article no.: S6-3217500
6

Intake Kit Stage6 MK2 Peugeot vertical

79,00 €
In stock
RRP
87,00 €
-9% Discount
Stage6
Reed Valve Stage6 R/T Viton AM6 / Derbi
Article no.: s6-3219088/VT

Reed Valve Stage6 R/T Viton AM6 / Derbi

65,00 €
In stock
RRP
72,00 €
-10% Discount
Easyboost
Intake Kit Big Valve Easyboost Minarelli vertical
Article no.: EB012

Intake Kit Big Valve Easyboost Minarelli vertical

62,00 €
In stock
Standard Parts
Reed Valve MBK 51
Article no.: CGN4067

Reed Valve MBK 51

6,70 €
In stock
Doppler
Reed Petals Doppler reed valve S2R Piaggio
Article no.: CGN440176

Reed Petals Doppler reed valve S2R Piaggio

11,00 €
In stock
Doppler
Reed Petals for Doppler reed valve ER2 fiberglass Derbi
Article no.: CGN440168

Reed Petals for Doppler reed valve ER2 fiberglass Derbi

8,00 €
In stock
RRP
11,00 €
-27% Discount
Sale
Doppler
Reed Petals for Doppler reed valve ER2 fiberglass AM6
Article no.: CGN440167

Reed Petals for Doppler reed valve ER2 fiberglass AM6

8,00 €
In stock
RRP
11,00 €
-27% Discount
Sale
Doppler
Reed Petals Doppler S2R fiberglass Minarelli / China 2T
Article no.: CGN440166

Reed Petals Doppler S2R fiberglass Minarelli / China 2T

10,50 €
In stock
RRP
11,00 €
-5% Discount
Doppler
Reed Petals Doppler reed valve S2R Peugeot stehend
Article no.: CGN440165

Reed Petals Doppler reed valve S2R Peugeot stehend

8,00 €
In stock
RRP
11,00 €
-27% Discount
Sale
Doppler
Reed Petals Doppler reed valve S2R Minarelli vertical
Article no.: CGN440164

Reed Petals Doppler reed valve S2R Minarelli vertical

10,50 €
In stock
RRP
11,00 €
-5% Discount
Italkit
Reed Petals Vetronit Italkit Double Prism Aprilia RS 125cc (Motor 122)
Article no.: IKLP.01.125

Reed Petals Vetronit Italkit Double Prism Aprilia RS 125cc (Motor 122)

36,00 €
In stock
38,00 €
-5% Discount
Sale
MotoForce Racing
Reed Valve Motoforce Racing Minarelli vertical
Article no.: MF35.16807

Reed Valve Motoforce Racing Minarelli vertical

27,00 €
In stock
RRP
39,50 €
-32% Discount
Sale
MotoForce Racing
Reed Valve Motoforce Piaggio
Article no.: MF35.14003

Reed Valve Motoforce Piaggio

33,00 €
In stock
RRP
46,50 €
-29% Discount
Sale
Stage6
Reed Valve Stage6 Viton Minarelli horizontal
Article no.: S6-3219066/VT

Reed Valve Stage6 Viton Minarelli horizontal

65,00 €
In stock soon
RRP
72,00 €
-10% Discount
Stage6
Reed Valve Stage6 Viton Piaggio
Article no.: S6-3219040/VT

Reed Valve Stage6 Viton Piaggio

65,00 €
In stock soon
RRP
72,00 €
-10% Discount
Stage6
Intake Kit Stage6 MK2 Minarelli horizontal / China 2T
Article no.: S6-3216600
1

Intake Kit Stage6 MK2 Minarelli horizontal / China 2T

75,00 €
In stock soon
RRP
83,00 €
-10% Discount
Standard Parts
Reed Valve OEM quality Kymco Agility / Dink
Article no.: MF35.19500

Reed Valve OEM quality Kymco Agility / Dink

20,50 €
In stock soon
Standard Parts
Reed Valve Peugeot 103 Fox / FXR
Article no.: CGN493100

Reed Valve Peugeot 103 Fox / FXR

5,90 €
In stock soon
6,10 €
-3% Discount
Doppler
Reed Valve Doppler ER2 AM6
Article no.: CGN279479

Reed Valve Doppler ER2 AM6

50,00 €
In stock soon
MotoForce Racing
Reed Valve MotoForce Racing Minarelli horizontal / China 2T
Article no.: MF35.16604

Reed Valve MotoForce Racing Minarelli horizontal / China 2T

39,50 €
In stock soon
RRP
46,00 €
-14% Discount
Doppler
Reed Valve Doppler ER2 reinforced fiber Derbi Euro 2 / 3 / 4
Article no.: CGN208471

Reed Valve Doppler ER2 reinforced fiber Derbi Euro 2 / 3 / 4

50,50 €
Currently not in stock
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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