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Reed Valves and Petals

(85 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 Intake spacer Reed petals Reed valve
Brand
Barikit Derbi Doppler Easyboost Italkit KRM Malossi Metrakit MotoForce MotoForce Racing MVT Polini Stage6 Standard Parts Voca Racing
Price
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KRM
Reed Valve Spacer 10mm KRM gold Minarelli AM6
Article no.: KR457F

Reed Valve Spacer 10mm KRM gold Minarelli AM6

25,00 €
In stock soon
KRM
Reed Valve Spacer 10mm KRM red Minarelli AM6
Article no.: KR347F

Reed Valve Spacer 10mm KRM red Minarelli AM6

23,50 €
In stock soon
Italkit
Reed Valve + Intake Manifold Italkit W-Force AM6
Article no.: IKLC44.400
3

Reed Valve + Intake Manifold Italkit W-Force AM6

99,00 €
Currently not in stock
Italkit
Reed Valve + Intake Manifold Italkit W-Force Derbi
Article no.: IKLC12.40

Reed Valve + Intake Manifold Italkit W-Force Derbi

92,50 €
Currently not in stock
Voca Racing
Reed Petals Voca Racing carbon 0.35mm Derbi Euro 2 / Euro 3
Article no.: VCR-RD132192/CA
1

Reed Petals Voca Racing carbon 0.35mm Derbi Euro 2 / Euro 3

19,50 €
Currently not in stock
RRP
23,00 €
-15% Discount
Derbi
Reed Valve Derbi Euro 3 (D50B0)
Article no.: OE-DE847092

Reed Valve Derbi Euro 3 (D50B0)

45,00 €
Currently not in stock
Doppler
Reed Petals for Doppler reed valve ER2 fiberglass AM6
Article no.: CGN440167

Reed Petals for Doppler reed valve ER2 fiberglass AM6

10,50 €
Currently not in stock
RRP
11,00 €
-5% Discount
Easyboost
Reed Valve Spacer Easyboost 5mm AM6 / Derbi Euro 2 / 3 / 4
Article no.: EB015
2

Reed Valve Spacer Easyboost 5mm AM6 / Derbi Euro 2 / 3 / 4

16,50 €
Currently not in stock
Malossi
Reed valve Malossi VL5 Yamaha DT80
Article no.: M273407.C0

Reed valve Malossi VL5 Yamaha DT80

32,50 €
Currently not in stock
RRP
41,00 €
-21% 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
Malossi
Reed Petals Malossi VL6 Karbonit 0.3
Article no.: M275614.O0

Reed Petals Malossi VL6 Karbonit 0.3

5,60 €
Currently not in stock
RRP
6,60 €
-15% Discount
Italkit
Reed Valve Italkit Carbon Honda NSR 125
Article no.: IKLC.26.4

Reed Valve Italkit Carbon Honda NSR 125

88,50 €
Currently not in stock
KRM
Reed Valve Spacer 5mm KRM AM6 dark blue
Article no.: KR689F

Reed Valve Spacer 5mm KRM AM6 dark blue

21,00 €
Currently not in stock
KRM
Reed Valve Spacer 10mm KRM AM6 dark blue
Article no.: KR688F

Reed Valve Spacer 10mm KRM AM6 dark blue

23,50 €
Currently not in stock
KRM
Reed Valve Spacer 10mm KRM AM6 Purple
Article no.: KR085F

Reed Valve Spacer 10mm KRM AM6 Purple

23,00 €
Currently not in stock
KRM
Reed Valve Spacer 5mm KRM Derbi Purple
Article no.: KR123F

Reed Valve Spacer 5mm KRM Derbi Purple

21,00 €
Currently not in stock
Polini
Reed Petals Polini carbon fiber 0,30mm Derbi Euro 2 / Euro 3
Article no.: P213.0527
3

Reed Petals Polini carbon fiber 0,30mm Derbi Euro 2 / Euro 3

16,50 €
Currently not in stock
RRP
19,00 €
-13% Discount
Doppler
Reed Valve Doppler ER2 AM6
Article no.: CGN279479
2

Reed Valve Doppler ER2 AM6

50,00 €
Currently not in stock
Malossi
Reed Petals Malossi carbon 0.30 / 0.35 / 0.40mm AM6
Article no.: M2712430.C0
5

Reed Petals Malossi carbon 0.30 / 0.35 / 0.40mm AM6

31,00 €
Currently not in stock
Polini
Reed Valve Polini Evolution carbon fiber Derbi
Article no.: P213.0051
6

Reed Valve Polini Evolution carbon fiber Derbi

60,50 €
Currently not in stock
RRP
66,00 €
-8% Discount
KRM
Reed Valve Spacer 10mm KRM blue Minarelli AM6
Article no.: KR349F

Reed Valve Spacer 10mm KRM blue Minarelli AM6

24,00 €
Currently not in stock
KRM
Reed Valve Spacer 5mm KRM blue Derbi
Article no.: KR348F

Reed Valve Spacer 5mm KRM blue Derbi

21,50 €
Currently not in stock
KRM
Reed Valve Spacer 5mm KRM red Derbi
Article no.: KR346F

Reed Valve Spacer 5mm KRM red Derbi

21,00 €
Currently not in stock
Standard Parts
Reed Valve OEM quality Suzuki RMX / SMX
Article no.: MF35.17000

Reed Valve OEM quality Suzuki RMX / SMX

19,50 €
Currently not in stock
Polini
Reed Petals Polini Honda MTX 50
Article no.: P213.0520

Reed Petals Polini Honda MTX 50

5,90 €
Currently not in stock
RRP
6,60 €
-11% Discount
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12

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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